Stuff
This commit is contained in:
Gašper Dobrovoljc
parent
de93ee957b
commit
2ca44089b3
@ -1,13 +1,13 @@
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<!DOCTYPE html>
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<html lang="en">
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<html lang="en" class="dark">
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<head>
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<meta charset="UTF-8" />
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<link rel="icon" type="image/svg+xml" href="/vite.svg" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>imgproc</title>
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<script defer type="module" src="/src/main.ts"></script>
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</head>
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<body>
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<body class="bg-white dark:bg-gray-800">
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<div id="app"></div>
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<script type="module" src="/src/main.ts"></script>
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</body>
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</html>
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@ -13,6 +13,7 @@
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"@popperjs/core": "^2.11.7",
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"@sveltejs/vite-plugin-svelte": "^2.0.3",
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"@tsconfig/svelte": "^3.0.0",
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"@types/node": "^18.15.12",
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"autoprefixer": "^10.4.7",
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"chart.js": "^4.2.1",
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"classnames": "^2.3.2",
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16
pnpm-lock.yaml
generated
16
pnpm-lock.yaml
generated
@ -10,6 +10,9 @@ devDependencies:
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'@tsconfig/svelte':
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specifier: ^3.0.0
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version: 3.0.0
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'@types/node':
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specifier: ^18.15.12
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version: 18.15.12
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autoprefixer:
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specifier: ^10.4.7
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version: 10.4.7(postcss@8.4.21)
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@ -60,7 +63,7 @@ devDependencies:
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version: 4.9.3
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vite:
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specifier: ^4.2.0
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version: 4.2.0
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version: 4.2.0(@types/node@18.15.12)
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packages:
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@ -420,7 +423,7 @@ packages:
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magic-string: 0.29.0
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svelte: 3.55.1
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svelte-hmr: 0.15.1(svelte@3.55.1)
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vite: 4.2.0
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vite: 4.2.0(@types/node@18.15.12)
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vitefu: 0.2.4(vite@4.2.0)
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transitivePeerDependencies:
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- supports-color
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@ -430,6 +433,10 @@ packages:
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resolution: {integrity: sha512-pYrtLtOwku/7r1i9AMONsJMVYAtk3hzOfiGNekhtq5tYBGA7unMve8RvUclKLMT3PrihvJqUmzsRGh0RP84hKg==}
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dev: true
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/@types/node@18.15.12:
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resolution: {integrity: sha512-Wha1UwsB3CYdqUm2PPzh/1gujGCNtWVUYF0mB00fJFoR4gTyWTDPjSm+zBF787Ahw8vSGgBja90MkgFwvB86Dg==}
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dev: true
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/@types/pug@2.0.6:
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resolution: {integrity: sha512-SnHmG9wN1UVmagJOnyo/qkk0Z7gejYxOYYmaAwr5u2yFYfsupN3sg10kyzN8Hep/2zbHxCnsumxOoRIRMBwKCg==}
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dev: true
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@ -1483,7 +1490,7 @@ packages:
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dev: true
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optional: true
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/vite@4.2.0:
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/vite@4.2.0(@types/node@18.15.12):
|
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resolution: {integrity: sha512-AbDTyzzwuKoRtMIRLGNxhLRuv1FpRgdIw+1y6AQG73Q5+vtecmvzKo/yk8X/vrHDpETRTx01ABijqUHIzBXi0g==}
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engines: {node: ^14.18.0 || >=16.0.0}
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hasBin: true
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@ -1508,6 +1515,7 @@ packages:
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terser:
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optional: true
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dependencies:
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'@types/node': 18.15.12
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esbuild: 0.17.15
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postcss: 8.4.21
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resolve: 1.22.2
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@ -1524,7 +1532,7 @@ packages:
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vite:
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optional: true
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dependencies:
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vite: 4.2.0
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vite: 4.2.0(@types/node@18.15.12)
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dev: true
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/wrappy@1.0.2:
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241
src/App.svelte
241
src/App.svelte
@ -1,84 +1,189 @@
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<script lang="ts">
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import { Button, ButtonGroup, Fileupload, Spinner } from 'flowbite-svelte';
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import { applyFilter, getHistogram } from './lib/processor';
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import { Button, ButtonGroup, Spinner, Range, P } from 'flowbite-svelte';
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import {
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applyFilter,
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grayscale,
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threshold as threshold,
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} from './lib/engine/processor';
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import {
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boxFilter,
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sharpening,
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type FilterFn,
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edgeDetection,
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sobel,
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} from './lib/filters';
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import { Line } from 'svelte-chartjs';
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sharpeningFilter,
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laplaceFilter,
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sobelFilter,
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gaussianBlurFilter,
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boxBlurFilter,
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removeColorChannelFilter,
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thresholdFilter,
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enhanceColorChannelFilter,
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setBrightnessFilter,
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} from './lib/engine/filters';
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import 'chart.js/auto';
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import ImageUpload from './lib/components/ImageUpload.svelte';
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import demoImage from './assets/image.jpeg';
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import { ColorChannel } from './lib/engine/types';
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let files: FileList;
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let originalSrc: string;
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let filterSrc: string;
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let originalSrc: string | null = demoImage;
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let src: string | null = demoImage;
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let processing = false;
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let histogram: { red: number[]; green: number[]; blue: number[] };
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$: if (files) {
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originalSrc = URL.createObjectURL(files[0]);
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getHistogram(originalSrc).then((h) => (histogram = h));
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let thresholdValue = 128;
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let brightnessValue = 1;
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type Filter = {
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name: string;
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src: string;
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};
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let filters: Filter[] = [];
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async function apply(name: string, filter: FilterFn) {
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processing = true;
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src = await applyFilter(src, filter);
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filters = [...filters, { name, src }];
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processing = false;
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}
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async function apply(filter: FilterFn) {
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processing = true;
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filterSrc = await applyFilter(originalSrc, filter);
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processing = false;
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function handleUpload(e: CustomEvent) {
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src = e.detail.src;
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originalSrc = e.detail.src;
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}
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function undo() {
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filters = filters.slice(0, -1);
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src = filters[filters.length - 1]?.src || originalSrc;
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}
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function reset() {
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filters = [];
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src = originalSrc;
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}
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</script>
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<div class="p-4 space-y-2 w-screen">
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<Fileupload bind:files />
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<ButtonGroup>
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<Button on:click={() => apply(boxFilter(2))}>Box Filter</Button>
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<Button on:click={() => apply(sharpening)}>Sharpening</Button>
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<Button on:click={() => apply(edgeDetection)}>Edge detection</Button>
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<Button on:click={() => apply(sobel)}>Sobel</Button>
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</ButtonGroup>
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<div class="flex space-x-2 w-full">
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<img src={originalSrc} alt="" class="w-1/2" />
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{#if processing}
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<div class="flex items-center justify-center w-1/2">
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<Spinner />
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</div>
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{:else if filterSrc}
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<img src={filterSrc} alt="" class="w-1/2" />
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{/if}
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<div class="p-4 space-y-2 h-screen flex flex-col">
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<div class="w-max">
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<ImageUpload on:upload={handleUpload} />
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</div>
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<div class="w-1/2">
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<Line
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data={{
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labels: new Array(256).fill(0).map((_, i) => i),
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datasets: [
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{
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fill: true,
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label: 'Red',
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borderColor: 'red',
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backgroundColor: 'rgba(255, 0, 0, 0.2)',
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data: histogram?.red,
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},
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{
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fill: true,
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label: 'Green',
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borderColor: 'green',
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backgroundColor: 'rgba(0, 255, 0, 0.2)',
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data: histogram?.green,
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},
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{
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fill: true,
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label: 'Blue',
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borderColor: 'blue',
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backgroundColor: 'rgba(0, 0, 255, 0.2)',
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data: histogram?.blue,
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},
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],
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}}
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/>
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{#if src}
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<P>Filters</P>
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<div class="flex">
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<ButtonGroup>
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<Button on:click={() => apply('Box blur', boxBlurFilter)}
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>Box blur</Button
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>
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<Button on:click={() => apply('Gaussian blur', gaussianBlurFilter)}>
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Gaussian blur
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</Button>
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<Button on:click={() => apply('Laplace', laplaceFilter)}>Laplace</Button
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>
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<Button on:click={() => apply('Sobel', sobelFilter)}>Sobel</Button>
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<Button on:click={() => apply('Sharpening', sharpeningFilter)}>
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Sharpening
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</Button>
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<Button on:click={() => apply('Grayscale', grayscale)}>
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Grayscale
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</Button>
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</ButtonGroup>
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<div class="grow" />
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<div class="gap-y-2">
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<Button on:click={undo}>Undo</Button>
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<Button color="red" on:click={reset}>Reset</Button>
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</div>
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</div>
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<div class="flex items-center gap-x-4 w-96">
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<Button
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on:click={() =>
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apply(`Treshold: ${thresholdValue}`, thresholdFilter(thresholdValue))}
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>
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Threshold
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</Button>
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<P class="w-16">{thresholdValue}</P>
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<Range bind:value={thresholdValue} min={0} max={255} />
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</div>
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<div>
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<ButtonGroup>
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<Button
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color="red"
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on:click={() =>
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apply('Remove Red', removeColorChannelFilter(ColorChannel.red))}
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>
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Remove Red
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</Button>
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<Button
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color="green"
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on:click={() =>
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apply('Remove Green', removeColorChannelFilter(ColorChannel.green))}
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>
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Remove Green
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</Button>
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<Button
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color="blue"
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on:click={() =>
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apply('Remove Blue', removeColorChannelFilter(ColorChannel.blue))}
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>
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Remove Blue
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</Button>
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</ButtonGroup>
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</div>
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<div>
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<ButtonGroup>
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<Button
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color="red"
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on:click={() =>
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apply('Enhance Red', enhanceColorChannelFilter(ColorChannel.red))}
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>
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Enhance Red
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</Button>
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<Button
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color="green"
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on:click={() =>
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apply(
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'Enhance Green',
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enhanceColorChannelFilter(ColorChannel.green),
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)}
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>
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Enhance Green
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</Button>
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<Button
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color="blue"
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on:click={() =>
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apply('Enhance Blue', enhanceColorChannelFilter(ColorChannel.blue))}
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>
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Enhance Blue
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</Button>
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</ButtonGroup>
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</div>
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<div class="flex items-center gap-x-4 w-96">
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<Button
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on:click={() =>
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apply(
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`Brightness: ${brightnessValue}`,
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setBrightnessFilter(brightnessValue),
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)}
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>
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Brightness
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</Button>
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<P class="w-16">{brightnessValue}</P>
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<Range bind:value={brightnessValue} min={0} max={5} step={0.1} />
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</div>
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{/if}
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<div class="grow flex">
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<div class="w-64" />
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<div class="grow flex justify-center items-center">
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<img {src} alt="" />
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{#if processing}
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<div class="absolute">
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<Spinner />
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</div>
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{/if}
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</div>
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<div class="w-64">
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{#each filters as filter}
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<P>{filter.name}</P>
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{/each}
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</div>
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</div>
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</div>
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BIN
src/assets/banana.png
Normal file
BIN
src/assets/banana.png
Normal file
Binary file not shown.
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After Width: | Height: | Size: 84 KiB |
Binary file not shown.
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Before Width: | Height: | Size: 393 KiB |
BIN
src/assets/image.jpeg
Normal file
BIN
src/assets/image.jpeg
Normal file
Binary file not shown.
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After Width: | Height: | Size: 116 KiB |
Binary file not shown.
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Before Width: | Height: | Size: 1.0 MiB |
40
src/lib/components/Histogram.svelte
Normal file
40
src/lib/components/Histogram.svelte
Normal file
@ -0,0 +1,40 @@
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<script lang="ts">
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import { Line } from 'svelte-chartjs';
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type HistogramData = {
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red: number[];
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green: number[];
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blue: number[];
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};
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export let histogram: HistogramData;
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</script>
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<Line
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data={{
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labels: new Array(256).fill(0).map((_, i) => i),
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datasets: [
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{
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fill: true,
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label: 'Red',
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borderColor: 'red',
|
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backgroundColor: 'rgba(255, 0, 0, 0.2)',
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data: histogram.red,
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},
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{
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fill: true,
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label: 'Green',
|
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borderColor: 'green',
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backgroundColor: 'rgba(0, 255, 0, 0.2)',
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data: histogram.green,
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},
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{
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fill: true,
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label: 'Blue',
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borderColor: 'blue',
|
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backgroundColor: 'rgba(0, 0, 255, 0.2)',
|
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data: histogram.blue,
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},
|
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],
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}}
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/>
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13
src/lib/components/ImageUpload.svelte
Normal file
13
src/lib/components/ImageUpload.svelte
Normal file
@ -0,0 +1,13 @@
|
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<script lang="ts">
|
||||
import { Fileupload } from 'flowbite-svelte';
|
||||
import { createEventDispatcher } from 'svelte';
|
||||
|
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const dispatch = createEventDispatcher();
|
||||
|
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function handleFileChange(e) {
|
||||
const src = URL.createObjectURL(e.currentTarget.files[0]);
|
||||
dispatch('upload', { src });
|
||||
}
|
||||
</script>
|
||||
|
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<Fileupload on:change={handleFileChange} />
|
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101
src/lib/engine/filters.ts
Normal file
101
src/lib/engine/filters.ts
Normal file
@ -0,0 +1,101 @@
|
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import {
|
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grayscale,
|
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clone,
|
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add,
|
||||
applyMatrix,
|
||||
removeColorChannel,
|
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threshold,
|
||||
enhanceColorChannel,
|
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setBrightness,
|
||||
} from './processor';
|
||||
import type { ColorChannel } from './types';
|
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|
||||
export type FilterFn = (imageData: ImageData) => Promise<void> | void;
|
||||
|
||||
export const boxBlurFilter: FilterFn = async (imageData: ImageData) => {
|
||||
await applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[1, 1, 1],
|
||||
[1, 1, 1],
|
||||
[1, 1, 1],
|
||||
],
|
||||
div: 9,
|
||||
});
|
||||
};
|
||||
|
||||
export const gaussianBlurFilter: FilterFn = async (imageData: ImageData) => {
|
||||
await applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[1, 2, 1],
|
||||
[2, 4, 2],
|
||||
[1, 2, 1],
|
||||
],
|
||||
div: 16,
|
||||
});
|
||||
};
|
||||
|
||||
export const laplaceFilter: FilterFn = async (imageData: ImageData) => {
|
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await grayscale(imageData);
|
||||
await applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[0, -1, 0],
|
||||
[-1, 4, -1],
|
||||
[0, -1, 0],
|
||||
],
|
||||
});
|
||||
};
|
||||
|
||||
export const sobelFilter: FilterFn = async (imageData: ImageData) => {
|
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await grayscale(imageData);
|
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const data2 = clone(imageData);
|
||||
|
||||
await Promise.all([
|
||||
applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[-1, 0, 1],
|
||||
[-2, 0, 2],
|
||||
[-1, 0, 1],
|
||||
],
|
||||
}),
|
||||
|
||||
applyMatrix(data2, {
|
||||
matrix: [
|
||||
[-1, -2, -1],
|
||||
[0, 0, 0],
|
||||
[1, 2, 1],
|
||||
],
|
||||
}),
|
||||
]);
|
||||
|
||||
await add(imageData, data2);
|
||||
};
|
||||
|
||||
export const sharpeningFilter: FilterFn = async (imageData: ImageData) => {
|
||||
await applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[0, -1, 0],
|
||||
[-1, 5, -1],
|
||||
[0, -1, 0],
|
||||
],
|
||||
});
|
||||
};
|
||||
|
||||
export const thresholdFilter =
|
||||
(thresholdValue: number): FilterFn =>
|
||||
(imageData: ImageData) =>
|
||||
threshold(imageData, thresholdValue);
|
||||
|
||||
export const removeColorChannelFilter =
|
||||
(colorChannel: ColorChannel): FilterFn =>
|
||||
(imageData: ImageData) =>
|
||||
removeColorChannel(imageData, colorChannel);
|
||||
|
||||
export const enhanceColorChannelFilter =
|
||||
(colorChannel: ColorChannel): FilterFn =>
|
||||
(imageData: ImageData) =>
|
||||
enhanceColorChannel(imageData, colorChannel);
|
||||
|
||||
export const setBrightnessFilter =
|
||||
(brightness: number): FilterFn =>
|
||||
(imageData: ImageData) =>
|
||||
setBrightness(imageData, brightness);
|
||||
182
src/lib/engine/processor.ts
Normal file
182
src/lib/engine/processor.ts
Normal file
@ -0,0 +1,182 @@
|
||||
import type { FilterFn } from './filters';
|
||||
import type { ColorChannel } from './types';
|
||||
import type { AddParams } from './workers/add';
|
||||
import type { ApplyMarixParams } from './workers/applyMatrix';
|
||||
import type { EnhanceColorChannelParams } from './workers/enhanceColorChannel';
|
||||
import type { HistogramData } from './workers/getHistogram';
|
||||
import type { RemoveColorChannelParams } from './workers/removeColorChannel';
|
||||
import type { SetBrightnessParams } from './workers/setBrightness';
|
||||
import type { SubtractParams } from './workers/subtract';
|
||||
import type { TresholdParams } from './workers/treshold';
|
||||
|
||||
export type Filter = {
|
||||
matrix: number[][];
|
||||
div?: number;
|
||||
};
|
||||
|
||||
export async function applyFilter(
|
||||
src: string,
|
||||
filter: FilterFn,
|
||||
): Promise<string> {
|
||||
const image = await loadImage(src);
|
||||
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = image.naturalWidth;
|
||||
canvas.height = image.naturalHeight;
|
||||
|
||||
const ctx = canvas.getContext('2d');
|
||||
ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
|
||||
|
||||
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
|
||||
|
||||
await filter(imageData);
|
||||
|
||||
ctx.putImageData(imageData, 0, 0);
|
||||
|
||||
const url = canvas.toDataURL();
|
||||
canvas.remove();
|
||||
|
||||
return url;
|
||||
}
|
||||
|
||||
export async function applyMatrix(imageData: ImageData, filter: Filter) {
|
||||
const newImageData = await runInWorker<ApplyMarixParams, ImageData>(
|
||||
'./workers/applyMatrix.ts',
|
||||
{ imageData, filter },
|
||||
);
|
||||
imageData.data.set(newImageData.data);
|
||||
}
|
||||
|
||||
async function loadImage(src: string) {
|
||||
const image = new Image();
|
||||
image.src = src;
|
||||
return new Promise<HTMLImageElement>((res, rej) => {
|
||||
image.onload = () => res(image);
|
||||
image.onerror = rej;
|
||||
});
|
||||
}
|
||||
|
||||
async function getImageData(src: string): Promise<ImageData> {
|
||||
const image = await loadImage(src);
|
||||
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = image.naturalWidth;
|
||||
canvas.height = image.naturalHeight;
|
||||
|
||||
const ctx = canvas.getContext('2d');
|
||||
ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
|
||||
|
||||
return ctx.getImageData(0, 0, canvas.width, canvas.height);
|
||||
}
|
||||
|
||||
export async function getHistogram(src: string) {
|
||||
const imageData = await getImageData(src);
|
||||
const histogram = await runInWorker<ImageData, HistogramData>(
|
||||
'./workers/getHistogram.ts',
|
||||
imageData,
|
||||
);
|
||||
return histogram;
|
||||
}
|
||||
|
||||
async function runInWorker<I, O>(url: string, data: I) {
|
||||
return new Promise<O>((res, rej) => {
|
||||
if (!window.Worker) {
|
||||
rej('Worker is not supported in this browser');
|
||||
return;
|
||||
}
|
||||
|
||||
const workerUrl = new URL(url, import.meta.url);
|
||||
const worker = new Worker(workerUrl, { type: 'module' });
|
||||
|
||||
worker.onmessage = (e: MessageEvent<O>) => res(e.data);
|
||||
worker.postMessage(data);
|
||||
});
|
||||
}
|
||||
|
||||
export async function grayscale(imageData: ImageData) {
|
||||
const newImageData = await runInWorker<ImageData, ImageData>(
|
||||
'./workers/grayscale.ts',
|
||||
imageData,
|
||||
);
|
||||
imageData.data.set(newImageData.data);
|
||||
}
|
||||
|
||||
export async function add(imageData1: ImageData, imageData2: ImageData) {
|
||||
const res = await runInWorker<AddParams, AddParams>('./workers/add.ts', {
|
||||
imageData1,
|
||||
imageData2,
|
||||
});
|
||||
imageData1.data.set(res.imageData1.data);
|
||||
imageData2.data.set(res.imageData2.data);
|
||||
}
|
||||
|
||||
export async function subtract(imageData1: ImageData, imageData2: ImageData) {
|
||||
const res = await runInWorker<SubtractParams, SubtractParams>(
|
||||
'./workers/subtract.ts',
|
||||
{
|
||||
imageData1,
|
||||
imageData2,
|
||||
},
|
||||
);
|
||||
imageData1.data.set(res.imageData1.data);
|
||||
imageData2.data.set(res.imageData2.data);
|
||||
}
|
||||
|
||||
export function clone(imageData: ImageData): ImageData {
|
||||
return {
|
||||
width: imageData.width,
|
||||
height: imageData.height,
|
||||
colorSpace: imageData.colorSpace,
|
||||
data: new Uint8ClampedArray(imageData.data),
|
||||
};
|
||||
}
|
||||
|
||||
export async function threshold(imageData: ImageData, threshold: number) {
|
||||
const newImageData = await runInWorker<TresholdParams, ImageData>(
|
||||
'./workers/treshold.ts',
|
||||
{
|
||||
imageData,
|
||||
threshold,
|
||||
},
|
||||
);
|
||||
imageData.data.set(newImageData.data);
|
||||
}
|
||||
|
||||
export async function removeColorChannel(
|
||||
imageData: ImageData,
|
||||
colorChannel: ColorChannel,
|
||||
) {
|
||||
const newImageData = await runInWorker<RemoveColorChannelParams, ImageData>(
|
||||
'./workers/removeColorChannel.ts',
|
||||
{
|
||||
imageData,
|
||||
colorChannel,
|
||||
},
|
||||
);
|
||||
imageData.data.set(newImageData.data);
|
||||
}
|
||||
|
||||
export async function enhanceColorChannel(
|
||||
imageData: ImageData,
|
||||
colorChannel: ColorChannel,
|
||||
) {
|
||||
const newImageData = await runInWorker<EnhanceColorChannelParams, ImageData>(
|
||||
'./workers/enhanceColorChannel.ts',
|
||||
{
|
||||
imageData,
|
||||
colorChannel,
|
||||
},
|
||||
);
|
||||
imageData.data.set(newImageData.data);
|
||||
}
|
||||
|
||||
export async function setBrightness(imageData: ImageData, brightness: number) {
|
||||
const newImageData = await runInWorker<SetBrightnessParams, ImageData>(
|
||||
'./workers/setBrightness.ts',
|
||||
{
|
||||
imageData,
|
||||
brightness,
|
||||
},
|
||||
);
|
||||
imageData.data.set(newImageData.data);
|
||||
}
|
||||
49
src/lib/engine/proxy.ts
Normal file
49
src/lib/engine/proxy.ts
Normal file
@ -0,0 +1,49 @@
|
||||
export type Pixel = {
|
||||
r: number;
|
||||
g: number;
|
||||
b: number;
|
||||
a: number;
|
||||
};
|
||||
|
||||
export class ImageDataProxy {
|
||||
constructor(private readonly imageData: ImageData) {}
|
||||
|
||||
public getPixel(x: number, y: number): Pixel {
|
||||
const { data, width, height } = this.imageData;
|
||||
|
||||
if (x > width - 1) x = width - 1;
|
||||
else if (x < 0) x = 0;
|
||||
|
||||
if (y > height - 1) y = height - 1;
|
||||
else if (y < 0) y = 0;
|
||||
|
||||
const i = (y * width + x) * 4;
|
||||
return {
|
||||
r: data[i],
|
||||
g: data[i + 1],
|
||||
b: data[i + 2],
|
||||
a: data[i + 3],
|
||||
};
|
||||
}
|
||||
|
||||
public setPixel(x: number, y: number, pixel: Pixel) {
|
||||
const { data, width, height } = this.imageData;
|
||||
|
||||
if (x > width - 1 || y > height - 1) return;
|
||||
|
||||
if (pixel.r > 255) pixel.r = 255;
|
||||
else if (pixel.r < 0) pixel.r = 0;
|
||||
|
||||
if (pixel.g > 255) pixel.g = 255;
|
||||
else if (pixel.g < 0) pixel.g = 0;
|
||||
|
||||
if (pixel.b > 255) pixel.b = 255;
|
||||
else if (pixel.b < 0) pixel.b = 0;
|
||||
|
||||
const i = (y * width + x) * 4;
|
||||
data[i] = pixel.r;
|
||||
data[i + 1] = pixel.g;
|
||||
data[i + 2] = pixel.b;
|
||||
data[i + 3] = pixel.a;
|
||||
}
|
||||
}
|
||||
5
src/lib/engine/types.ts
Normal file
5
src/lib/engine/types.ts
Normal file
@ -0,0 +1,5 @@
|
||||
export enum ColorChannel {
|
||||
red = 0,
|
||||
green = 1,
|
||||
blue = 2,
|
||||
}
|
||||
8
src/lib/engine/worker.ts
Normal file
8
src/lib/engine/worker.ts
Normal file
@ -0,0 +1,8 @@
|
||||
type WorkerFn<T> = (data: any) => T;
|
||||
|
||||
export function registerWorker<T>(func: WorkerFn<T>) {
|
||||
self.onmessage = (e: MessageEvent<T>) => {
|
||||
const result = func(e.data);
|
||||
self.postMessage(result);
|
||||
};
|
||||
}
|
||||
27
src/lib/engine/workers/add.ts
Normal file
27
src/lib/engine/workers/add.ts
Normal file
@ -0,0 +1,27 @@
|
||||
import { ImageDataProxy } from '../proxy';
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type AddParams = {
|
||||
imageData1: ImageData;
|
||||
imageData2: ImageData;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData1, imageData2 }: AddParams) => {
|
||||
const data1 = new ImageDataProxy(imageData1);
|
||||
const data2 = new ImageDataProxy(imageData2);
|
||||
|
||||
for (let y = 0; y < imageData1.height; y++) {
|
||||
for (let x = 0; x < imageData1.width; x++) {
|
||||
const pix1 = data1.getPixel(x, y);
|
||||
const pix2 = data2.getPixel(x, y);
|
||||
data1.setPixel(x, y, {
|
||||
r: pix1.r + pix2.r,
|
||||
g: pix1.g + pix2.g,
|
||||
b: pix1.b + pix2.b,
|
||||
a: pix1.a,
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
return { imageData1, imageData2 };
|
||||
});
|
||||
48
src/lib/engine/workers/applyMatrix.ts
Normal file
48
src/lib/engine/workers/applyMatrix.ts
Normal file
@ -0,0 +1,48 @@
|
||||
import { clone, type Filter } from '../processor';
|
||||
import { ImageDataProxy, type Pixel } from '../proxy';
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type ApplyMarixParams = {
|
||||
imageData: ImageData;
|
||||
filter: Filter;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData, filter }: ApplyMarixParams) => {
|
||||
const { matrix, div = 1 } = filter;
|
||||
|
||||
const proxy = new ImageDataProxy(imageData);
|
||||
|
||||
const newImageData = clone(imageData);
|
||||
const newProxy = new ImageDataProxy(newImageData);
|
||||
|
||||
const offset = (matrix.length - 1) / 2;
|
||||
|
||||
for (let y = 0; y < imageData.height; y++) {
|
||||
for (let x = 0; x < imageData.width; x++) {
|
||||
const pix = proxy.getPixel(x, y);
|
||||
const sum: Pixel = { r: 0, g: 0, b: 0, a: pix.a };
|
||||
|
||||
for (let my = 0; my < matrix.length; my++) {
|
||||
for (let mx = 0; mx < matrix[0].length; mx++) {
|
||||
const mpix = proxy.getPixel(x + mx - offset, y + my - offset);
|
||||
const mult = matrix[my][mx];
|
||||
sum.r += mpix.r * mult;
|
||||
sum.g += mpix.g * mult;
|
||||
sum.b += mpix.b * mult;
|
||||
}
|
||||
}
|
||||
|
||||
if (div !== 1) {
|
||||
sum.r /= div;
|
||||
sum.g /= div;
|
||||
sum.b /= div;
|
||||
}
|
||||
|
||||
newProxy.setPixel(x, y, sum);
|
||||
}
|
||||
}
|
||||
|
||||
return newImageData;
|
||||
});
|
||||
|
||||
export {};
|
||||
17
src/lib/engine/workers/enhanceColorChannel.ts
Normal file
17
src/lib/engine/workers/enhanceColorChannel.ts
Normal file
@ -0,0 +1,17 @@
|
||||
import type { ColorChannel } from '../types';
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type EnhanceColorChannelParams = {
|
||||
imageData: ImageData;
|
||||
colorChannel: ColorChannel;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData, colorChannel }: EnhanceColorChannelParams) => {
|
||||
const data = imageData.data;
|
||||
for (let i = 0; i < data.length; i += 4) {
|
||||
data[i + colorChannel] = 255;
|
||||
}
|
||||
return imageData;
|
||||
});
|
||||
|
||||
export {};
|
||||
29
src/lib/engine/workers/getHistogram.ts
Normal file
29
src/lib/engine/workers/getHistogram.ts
Normal file
@ -0,0 +1,29 @@
|
||||
import { ImageDataProxy } from '../proxy';
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type HistogramData = {
|
||||
red: number[];
|
||||
green: number[];
|
||||
blue: number[];
|
||||
};
|
||||
|
||||
registerWorker((imageData: ImageData): HistogramData => {
|
||||
const data = new ImageDataProxy(imageData);
|
||||
|
||||
const red = new Array(256).fill(0);
|
||||
const green = new Array(256).fill(0);
|
||||
const blue = new Array(256).fill(0);
|
||||
|
||||
for (let y = 0; y < imageData.height; y++) {
|
||||
for (let x = 0; x < imageData.width; x++) {
|
||||
const pix = data.getPixel(x, y);
|
||||
red[pix.r]++;
|
||||
green[pix.g]++;
|
||||
blue[pix.b]++;
|
||||
}
|
||||
}
|
||||
|
||||
return { red, green, blue };
|
||||
});
|
||||
|
||||
export {};
|
||||
14
src/lib/engine/workers/grayscale.ts
Normal file
14
src/lib/engine/workers/grayscale.ts
Normal file
@ -0,0 +1,14 @@
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
registerWorker((imageData: ImageData) => {
|
||||
const data = imageData.data;
|
||||
for (let i = 0; i < data.length; i += 4) {
|
||||
const val = 0.299 * data[i] + 0.587 * data[i] + 0.114 * data[i];
|
||||
data[i] = val;
|
||||
data[i + 1] = val;
|
||||
data[i + 2] = val;
|
||||
}
|
||||
return imageData;
|
||||
});
|
||||
|
||||
export {};
|
||||
17
src/lib/engine/workers/removeColorChannel.ts
Normal file
17
src/lib/engine/workers/removeColorChannel.ts
Normal file
@ -0,0 +1,17 @@
|
||||
import type { ColorChannel } from '../types';
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type RemoveColorChannelParams = {
|
||||
imageData: ImageData;
|
||||
colorChannel: ColorChannel;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData, colorChannel }: RemoveColorChannelParams) => {
|
||||
const data = imageData.data;
|
||||
for (let i = 0; i < data.length; i += 4) {
|
||||
data[i + colorChannel] = 0;
|
||||
}
|
||||
return imageData;
|
||||
});
|
||||
|
||||
export {};
|
||||
17
src/lib/engine/workers/setBrightness.ts
Normal file
17
src/lib/engine/workers/setBrightness.ts
Normal file
@ -0,0 +1,17 @@
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type SetBrightnessParams = {
|
||||
imageData: ImageData;
|
||||
brightness: number;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData, brightness }: SetBrightnessParams) => {
|
||||
const data = imageData.data;
|
||||
for (let i = 0; i < data.length; i++) {
|
||||
if ((i + 1) % 4 === 0) continue;
|
||||
data[i] *= brightness;
|
||||
}
|
||||
return imageData;
|
||||
});
|
||||
|
||||
export {};
|
||||
27
src/lib/engine/workers/subtract.ts
Normal file
27
src/lib/engine/workers/subtract.ts
Normal file
@ -0,0 +1,27 @@
|
||||
import { ImageDataProxy } from '../proxy';
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type SubtractParams = {
|
||||
imageData1: ImageData;
|
||||
imageData2: ImageData;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData1, imageData2 }: SubtractParams) => {
|
||||
const data1 = new ImageDataProxy(imageData1);
|
||||
const data2 = new ImageDataProxy(imageData2);
|
||||
|
||||
for (let y = 0; y < imageData1.height; y++) {
|
||||
for (let x = 0; x < imageData1.width; x++) {
|
||||
const pix1 = data1.getPixel(x, y);
|
||||
const pix2 = data2.getPixel(x, y);
|
||||
data1.setPixel(x, y, {
|
||||
r: pix1.r - pix2.r,
|
||||
g: pix1.g - pix2.g,
|
||||
b: pix1.b - pix2.b,
|
||||
a: pix1.a,
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
return { imageData1, imageData2 };
|
||||
});
|
||||
20
src/lib/engine/workers/treshold.ts
Normal file
20
src/lib/engine/workers/treshold.ts
Normal file
@ -0,0 +1,20 @@
|
||||
import { registerWorker } from '../worker';
|
||||
|
||||
export type TresholdParams = {
|
||||
imageData: ImageData;
|
||||
threshold: number;
|
||||
};
|
||||
|
||||
registerWorker(({ imageData, threshold }: TresholdParams) => {
|
||||
const data = imageData.data;
|
||||
for (let i = 0; i < data.length; i += 4) {
|
||||
let val = 0.299 * data[i] + 0.587 * data[i] + 0.114 * data[i];
|
||||
val = val > threshold ? 255 : 0;
|
||||
data[i] = val;
|
||||
data[i + 1] = val;
|
||||
data[i + 2] = val;
|
||||
}
|
||||
return imageData;
|
||||
});
|
||||
|
||||
export {};
|
||||
@ -1,66 +0,0 @@
|
||||
import { applyMatrix, grayscale, type Filter, clone, add } from './processor';
|
||||
|
||||
export type FilterFn = (imageData: ImageData) => void;
|
||||
|
||||
export function boxFilter(amount = 2): FilterFn {
|
||||
return (imageData: ImageData) => {
|
||||
const size = amount * 2 + 1;
|
||||
const matrix = [];
|
||||
for (let i = 0; i < size; i++) {
|
||||
const row = [];
|
||||
for (let j = 0; j < size; j++) {
|
||||
row.push(1);
|
||||
}
|
||||
matrix.push(row);
|
||||
}
|
||||
|
||||
applyMatrix(imageData, {
|
||||
div: size ** 2,
|
||||
matrix,
|
||||
});
|
||||
};
|
||||
}
|
||||
|
||||
export const sharpening: FilterFn = (imageData: ImageData) => {
|
||||
applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[0, -1, 0],
|
||||
[-1, 5, -1],
|
||||
[0, -1, 0],
|
||||
],
|
||||
});
|
||||
};
|
||||
|
||||
export const edgeDetection: FilterFn = (imageData: ImageData) => {
|
||||
grayscale(imageData);
|
||||
applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[0, -1, 0],
|
||||
[-1, 4, -1],
|
||||
[0, -1, 0],
|
||||
],
|
||||
});
|
||||
};
|
||||
|
||||
export const sobel: FilterFn = (imageData: ImageData) => {
|
||||
grayscale(imageData);
|
||||
const data2 = clone(imageData);
|
||||
|
||||
applyMatrix(imageData, {
|
||||
matrix: [
|
||||
[-1, 0, 1],
|
||||
[-2, 0, 2],
|
||||
[-1, 0, 1],
|
||||
],
|
||||
});
|
||||
|
||||
applyMatrix(data2, {
|
||||
matrix: [
|
||||
[-1, -2, -1],
|
||||
[0, 0, 0],
|
||||
[1, 2, 1],
|
||||
],
|
||||
});
|
||||
|
||||
add(imageData, data2);
|
||||
};
|
||||
@ -1,209 +0,0 @@
|
||||
import type { FilterFn } from './filters';
|
||||
|
||||
export type Filter = {
|
||||
matrix: number[][];
|
||||
div?: number;
|
||||
};
|
||||
|
||||
export async function applyFilter(
|
||||
src: string,
|
||||
filter: FilterFn,
|
||||
): Promise<string> {
|
||||
const image = await loadImage(src);
|
||||
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = image.naturalWidth;
|
||||
canvas.height = image.naturalHeight;
|
||||
|
||||
const ctx = canvas.getContext('2d');
|
||||
ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
|
||||
|
||||
const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
|
||||
filter(imageData);
|
||||
ctx.putImageData(imageData, 0, 0);
|
||||
|
||||
const url = canvas.toDataURL();
|
||||
canvas.remove();
|
||||
|
||||
return url;
|
||||
}
|
||||
|
||||
async function loadImage(src: string) {
|
||||
const image = new Image();
|
||||
image.src = src;
|
||||
return new Promise<HTMLImageElement>((res, rej) => {
|
||||
image.onload = () => res(image);
|
||||
image.onerror = rej;
|
||||
});
|
||||
}
|
||||
|
||||
async function getImageData(src: string): Promise<ImageData> {
|
||||
const image = await loadImage(src);
|
||||
|
||||
const canvas = document.createElement('canvas');
|
||||
canvas.width = image.naturalWidth;
|
||||
canvas.height = image.naturalHeight;
|
||||
|
||||
const ctx = canvas.getContext('2d');
|
||||
ctx.drawImage(image, 0, 0, canvas.width, canvas.height);
|
||||
|
||||
return ctx.getImageData(0, 0, canvas.width, canvas.height);
|
||||
}
|
||||
|
||||
export async function getHistogram(src: string) {
|
||||
const imageData = await getImageData(src);
|
||||
|
||||
const data = new ImageDataProxy(imageData);
|
||||
|
||||
const red = new Array(256).fill(0);
|
||||
const green = new Array(256).fill(0);
|
||||
const blue = new Array(256).fill(0);
|
||||
|
||||
for (let y = 0; y < imageData.height; y++) {
|
||||
for (let x = 0; x < imageData.width; x++) {
|
||||
const pix = data.getPixel(x, y);
|
||||
red[pix.r]++;
|
||||
green[pix.g]++;
|
||||
blue[pix.b]++;
|
||||
}
|
||||
}
|
||||
|
||||
return { red, green, blue };
|
||||
}
|
||||
|
||||
export function grayscale(imageData: ImageData) {
|
||||
const data = new ImageDataProxy(imageData);
|
||||
for (let y = 0; y < imageData.height; y++) {
|
||||
for (let x = 0; x < imageData.width; x++) {
|
||||
const pix = data.getPixel(x, y);
|
||||
const avg = pix.r * 0.299 + pix.g * 0.587 + pix.b * 0.114;
|
||||
data.setPixel(x, y, { r: avg, g: avg, b: avg, a: pix.a });
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export function add(imageData1: ImageData, imageData2: ImageData) {
|
||||
const data1 = new ImageDataProxy(imageData1);
|
||||
const data2 = new ImageDataProxy(imageData2);
|
||||
|
||||
for (let y = 0; y < imageData1.height; y++) {
|
||||
for (let x = 0; x < imageData1.width; x++) {
|
||||
const pix1 = data1.getPixel(x, y);
|
||||
const pix2 = data2.getPixel(x, y);
|
||||
data1.setPixel(x, y, {
|
||||
r: pix1.r + pix2.r,
|
||||
g: pix1.g + pix2.g,
|
||||
b: pix1.b + pix2.b,
|
||||
a: pix1.a,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export function subtract(imageData1: ImageData, imageData2: ImageData) {
|
||||
const data1 = new ImageDataProxy(imageData1);
|
||||
const data2 = new ImageDataProxy(imageData2);
|
||||
|
||||
for (let y = 0; y < imageData1.height; y++) {
|
||||
for (let x = 0; x < imageData1.width; x++) {
|
||||
const pix1 = data1.getPixel(x, y);
|
||||
const pix2 = data2.getPixel(x, y);
|
||||
data1.setPixel(x, y, {
|
||||
r: pix1.r - pix2.r,
|
||||
g: pix1.g - pix2.g,
|
||||
b: pix1.b - pix2.b,
|
||||
a: pix1.a,
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export function clone(imageData: ImageData): ImageData {
|
||||
return {
|
||||
width: imageData.width,
|
||||
height: imageData.height,
|
||||
colorSpace: imageData.colorSpace,
|
||||
data: new Uint8ClampedArray(imageData.data),
|
||||
};
|
||||
}
|
||||
|
||||
export function applyMatrix(imageData: ImageData, filter: Filter) {
|
||||
const { matrix, div = 1 } = filter;
|
||||
|
||||
const data = new ImageDataProxy(imageData);
|
||||
|
||||
const offset = -(matrix.length - 1) / 2;
|
||||
|
||||
for (let y = 0; y < imageData.height; y++) {
|
||||
for (let x = 0; x < imageData.width; x++) {
|
||||
const pix = data.getPixel(x, y);
|
||||
let sum: Pixel = { r: 0, g: 0, b: 0, a: pix.a };
|
||||
|
||||
for (let my = 0; my < matrix.length; my++) {
|
||||
for (let mx = 0; mx < matrix[my].length; mx++) {
|
||||
const mpix = data.getPixel(x + mx - offset, y + my - offset);
|
||||
const val = matrix[my][mx];
|
||||
sum.r += mpix.r * val;
|
||||
sum.g += mpix.g * val;
|
||||
sum.b += mpix.b * val;
|
||||
}
|
||||
}
|
||||
|
||||
sum.r /= div;
|
||||
sum.g /= div;
|
||||
sum.b /= div;
|
||||
|
||||
data.setPixel(x, y, sum);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
type Pixel = {
|
||||
r: number;
|
||||
g: number;
|
||||
b: number;
|
||||
a: number;
|
||||
};
|
||||
|
||||
export class ImageDataProxy {
|
||||
constructor(private readonly imageData: ImageData) {}
|
||||
|
||||
public getPixel(x: number, y: number): Pixel {
|
||||
const { data, width, height } = this.imageData;
|
||||
|
||||
if (x > width - 1) x = width - 1;
|
||||
else if (x < 0) x = 0;
|
||||
|
||||
if (y > height - 1) y = height - 1;
|
||||
else if (y < 0) y = 0;
|
||||
|
||||
const i = (y * width + x) * 4;
|
||||
return {
|
||||
r: data[i],
|
||||
g: data[i + 1],
|
||||
b: data[i + 2],
|
||||
a: data[i + 3],
|
||||
};
|
||||
}
|
||||
|
||||
public setPixel(x: number, y: number, pixel: Pixel) {
|
||||
const { data, width, height } = this.imageData;
|
||||
|
||||
if (x > width - 1 || y > height - 1) return;
|
||||
|
||||
if (pixel.r > 255) pixel.r = 255;
|
||||
else if (pixel.r < 0) pixel.r = 0;
|
||||
|
||||
if (pixel.g > 255) pixel.g = 255;
|
||||
else if (pixel.g < 0) pixel.g = 0;
|
||||
|
||||
if (pixel.b > 255) pixel.b = 255;
|
||||
else if (pixel.b < 0) pixel.b = 0;
|
||||
|
||||
const i = (y * width + x) * 4;
|
||||
data[i] = pixel.r;
|
||||
data[i + 1] = pixel.g;
|
||||
data[i + 2] = pixel.b;
|
||||
data[i + 3] = pixel.a;
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user