{"id":13181,"date":"2026-03-17T06:22:38","date_gmt":"2026-03-17T06:22:38","guid":{"rendered":"https:\/\/withcode.tech\/media\/?p=13181"},"modified":"2026-07-01T15:28:35","modified_gmt":"2026-07-01T15:28:35","slug":"webassembly-image-processing-rust","status":"publish","type":"post","link":"https:\/\/withcode.tech\/media\/webassembly-image-processing-rust\/","title":{"rendered":"WebAssembly\uff08Wasm\uff09\u3067\u753b\u50cf\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u3067\u9ad8\u901f\u5316\u3059\u308b\u65b9\u6cd5\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011\uff5cRust\u30fbwasm-pack\u30fbJavaScript\u9023\u643a\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"\n<div class=\"wp-block-group swl-box\"><div class=\"wp-block-group__inner-container\">\n<h2 class=\"wp-block-heading\">\u3053\u306e\u8a18\u4e8b\u3067\u308f\u304b\u308b\u3053\u3068<\/h2>\n<ul class=\"wp-block-list\">\n<li>WebAssembly\u3068\u306f\u4f55\u304b\u30fbJavaScript\u3068\u6bd4\u3079\u30662\u301c4\u500d\u9ad8\u901f\u306b\u306a\u308b\u4ed5\u7d44\u307f<\/li>\n<li>Rust + wasm-pack\u306e\u74b0\u5883\u69cb\u7bc9\u624b\u9806\uff08\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u304b\u3089\u30d3\u30eb\u30c9\u307e\u3067\uff09<\/li>\n<li>\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u30fb\u30bb\u30d4\u30a2\u30fb\u30a8\u30c3\u30b8\u691c\u51fa\u306a\u3069\u753b\u50cf\u51e6\u7406\u95a2\u6570\u306eRust\u5b9f\u88c5\u30b3\u30fc\u30c9\u5168\u6587<\/li>\n<li>Vite + React\u3078\u306e\u7d71\u5408\u65b9\u6cd5\u3068Web Workers\u3068Wasm\u306e\u7d44\u307f\u5408\u308f\u305b\u30d1\u30bf\u30fc\u30f3<\/li>\n<li>ffmpeg.wasm\u30fbOpenCV.js\u306a\u3069\u65e2\u5b58Wasm\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6d3b\u7528\u65b9\u6cd5\u3068\u30a8\u30e9\u30fc\u5bfe\u51e6\u6cd5<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-left\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-14.48.08.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u751f\u5f92<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u753b\u50cf\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u5b9f\u88c5\u3057\u305f\u3044\u3093\u3067\u3059\u304c\u3001JavaScript\u3060\u3068\u30d5\u30ec\u30fc\u30e0\u30ec\u30fc\u30c8\u304c\u5168\u7136\u51fa\u306a\u304f\u3066\u2026\u2026<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n<div class=\"swell-block-balloon\"><div class=\"c-balloon -bln-right\" data-col=\"gray\"><div class=\"c-balloon__icon -square\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/withcode.tech\/media\/wp-content\/uploads\/2025\/06\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-06-15-15.11.23.jpg\" alt=\"\" class=\"c-balloon__iconImg\" width=\"80px\" height=\"80px\"><span class=\"c-balloon__iconName\">\u30da\u30f3\u535a\u58eb<\/span><\/div><div class=\"c-balloon__body -speaking -border-none\"><div class=\"c-balloon__text\">\n<p><strong>WebAssembly\uff08Wasm\uff09\u3092\u4f7f\u3048\u3070\u305d\u308c\u304c\u89e3\u6c7a\u3067\u304d\u308b\u3093\u3058\u3083\uff01JavaScript\u3088\u308a2\u301c4\u500d\u9ad8\u901f\u306b\u52d5\u4f5c\u3059\u308bWasm\u3092Rust\u3067\u66f8\u3044\u3066\u3001JavaScript\u304b\u3089\u547c\u3073\u51fa\u3059\u4ed5\u7d44\u307f\u3092\u4f5c\u308c\u3070\u3001\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u30cd\u30a4\u30c6\u30a3\u30d6\u30a2\u30d7\u30ea\u306b\u8fd1\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5b9f\u73fe\u3067\u304d\u308b\u305e\u3002wasm-pack\u3092\u4f7f\u3048\u3070\u74b0\u5883\u69cb\u7bc9\u3082\u30b7\u30f3\u30d7\u30eb\u3058\u3083\uff01<\/strong><\/p>\n<span class=\"c-balloon__shapes\"><span class=\"c-balloon__before\"><\/span><span class=\"c-balloon__after\"><\/span><\/span><\/div><\/div><\/div><\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>\u7d50\u8ad6\uff1aWebAssembly\u3092\u4f7f\u3048\u3070\u3001\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067JavaScript\u306e2\u301c4\u500d\u9ad8\u901f\u306a\u753b\u50cf\u51e6\u7406\u304c\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/strong>\u52d5\u753b\u7de8\u96c6\u30c4\u30fc\u30eb\u30fb\u753b\u50cf\u30d5\u30a3\u30eb\u30bf\u30fc\u30fb\u7269\u7406\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u6697\u53f7\u5316\u51e6\u7406\u306a\u3069JavaScript\u3060\u3051\u3067\u306f\u901f\u5ea6\u306e\u9650\u754c\u3092\u611f\u3058\u308b\u5834\u9762\u3067\u7279\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8a18\u4e8b\u3067\u306f\u3001<strong><span class=\"swl-marker mark_yellow\">WebAssembly\u306e\u6982\u8981\u30fbRust\u3068wasm-pack\u306b\u3088\u308b\u958b\u767a\u74b0\u5883\u69cb\u7bc9\u30fb\u753b\u50cf\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b\uff08\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u30fb\u30bb\u30d4\u30a2\u30fb\u30a8\u30c3\u30b8\u691c\u51fa\u30fb\u660e\u308b\u3055\u8abf\u6574\uff09\u30fbWeb Workers\u3068Wasm\u306e\u7d44\u307f\u5408\u308f\u305b\u30fbVite\/React\u3078\u306e\u7d71\u5408\u30fb\u30e1\u30e2\u30ea\u7ba1\u7406<\/span><\/strong>\u3092\u5b8c\u5168\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">WebAssembly\u3068\u306f\uff5cJavaScript\u3068\u4f55\u304c\u9055\u3046\u306e\u304b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WebAssembly\uff08Wasm\uff09\u306f2017\u5e74\u306bW3C\u3067\u6a19\u6e96\u5316\u3055\u308c\u305f<strong>\u4f4e\u30ec\u30d9\u30eb\u30d0\u30a4\u30ca\u30ea\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/strong>\u3067\u3059\u3002C\/C++\u30fbRust\u30fbGo\u306a\u3069\u3067\u66f8\u304b\u308c\u305f\u30b3\u30fc\u30c9\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002Chrome\u30fbFirefox\u30fbSafari\u30fbEdge\u306e\u3059\u3079\u3066\u306e\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u304c\u5bfe\u5fdc\u3057\u3066\u304a\u308a\u30012026\u5e74\u73fe\u5728\u3067\u306f\u307b\u307c\u5168\u30d6\u30e9\u30a6\u30b6\u3067\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">WebAssembly\u304c\u9ad8\u901f\u306a\u7406\u7531\u306f2\u70b9\u3042\u308a\u307e\u3059\u3002<strong>\u30d0\u30a4\u30ca\u30ea\u5f62\u5f0f<\/strong>\u306a\u306e\u3067JavaScript\u306e\u3088\u3046\u306a\u30c6\u30ad\u30b9\u30c8\u30d1\u30fc\u30b9\u304c\u4e0d\u8981\u3067\u8aad\u307f\u8fbc\u307f\u304c\u901f\u3044\u70b9\u3001\u304a\u3088\u3073<strong>\u9759\u7684\u578b\u4ed8\u3051<\/strong>\u306a\u306e\u3067JIT\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u63a8\u6e2c\u304c\u4e0d\u8981\u3067\u6700\u9069\u5316\u3055\u308c\u305f\u30b3\u30fc\u30c9\u304c\u751f\u6210\u3055\u308c\u308b\u70b9\u3067\u3059\u3002\u7279\u306b\u6574\u6570\u30fb\u6d6e\u52d5\u5c0f\u6570\u70b9\u6f14\u7b97\u304c\u591a\u3044\u753b\u50cf\u51e6\u7406\u3067\u306f\u9855\u8457\u306a\u5dee\u304c\u51fa\u307e\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full\"><img decoding=\"async\" src=\"img\/webassembly_overview.png\" alt=\"WebAssembly\u306e\u4ed5\u7d44\u307f\u3068JavaScript\u3068\u306e\u6bd4\u8f03\u56f3\" class=\"wp-image-12500\"\/><\/figure>\n<\/div>\n\n<pre class=\"wp-block-code\"><code>>\u3010JavaScript vs WebAssembly \u306e\u6bd4\u8f03\u3011\n\n\u9805\u76ee              | JavaScript          | WebAssembly\n-----------------|--------------------|------------------\n\u5b9f\u884c\u5f62\u5f0f          | \u30c6\u30ad\u30b9\u30c8\uff08JIT\u6700\u9069\u5316\uff09 | \u30d0\u30a4\u30ca\u30ea\uff08\u4e8b\u524d\u6700\u9069\u5316\u6e08\u307f\uff09\n\u901f\u5ea6             | \u76f8\u5bfe\u901f\u5ea6 1.0        | \u76f8\u5bfe\u901f\u5ea6 2\u301c4\u500d\n\u578b\u4ed8\u3051           | \u52d5\u7684\u578b\u4ed8\u3051           | \u9759\u7684\u578b\u4ed8\u3051\nDOM\u64cd\u4f5c          | \u2705 \u53ef\u80fd              | \u274c \u4e0d\u53ef\uff08JS\u3092\u7d4c\u7531\uff09\n\u30e1\u30e2\u30ea\u30e2\u30c7\u30eb      | \u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3  | \u7dda\u5f62\u30e1\u30e2\u30ea\uff08\u624b\u52d5\u307e\u305f\u306f RAII\uff09\n\u4f7f\u3044\u6240           | UI\u30fb\u30ed\u30b8\u30c3\u30af\u5168\u822c     | \u8a08\u7b97\u96c6\u7d04\u578b\u306e\u51e6\u7406\n\u30d0\u30f3\u30c9\u30eb\u30b5\u30a4\u30ba    | \u30bd\u30fc\u30b9\u306e\u307e\u307e         | \u30b3\u30f3\u30d1\u30af\u30c8\u306a\u30d0\u30a4\u30ca\u30ea\uff08gz\u6e08\u307f\u306710\u301c100KB\u7a0b\u5ea6\uff09<\/code><\/pre>\n\n\n<h3 class=\"wp-block-heading\">WebAssembly\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30d9\u30f3\u30c1\u30de\u30fc\u30af<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30bf\u30b9\u30af<\/th><th>JavaScript (ms)<\/th><th>WebAssembly (ms)<\/th><th>\u9ad8\u901f\u5316\u500d\u7387<\/th><\/tr><\/thead><tbody><tr><td>\u5927\u91cf\u914d\u5217\u306e\u30bd\u30fc\u30c8\uff08100\u4e07\u4ef6\uff09<\/td><td>120<\/td><td>45<\/td><td><strong>2.7\u500d<\/strong><\/td><\/tr><tr><td>\u753b\u50cf\u51e6\u7406\uff08\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u5909\u63db 4K\u753b\u50cf\uff09<\/td><td>200<\/td><td>70<\/td><td><strong>2.9\u500d<\/strong><\/td><\/tr><tr><td>\u7269\u7406\u6f14\u7b97\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3<\/td><td>300<\/td><td>100<\/td><td><strong>3.0\u500d<\/strong><\/td><\/tr><tr><td>\u6697\u53f7\u5316\u51e6\u7406\uff08SHA-256 10MB\uff09<\/td><td>180<\/td><td>55<\/td><td><strong>3.3\u500d<\/strong><\/td><\/tr><tr><td>Sobel \u30a8\u30c3\u30b8\u691c\u51fa\uff08FHD\u753b\u50cf\uff09<\/td><td>450<\/td><td>130<\/td><td><strong>3.5\u500d<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u8a18\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u306fChrome 122\u3001Apple M2\u30c1\u30c3\u30d7\u3067\u306e\u8a08\u6e2c\u5024\u3067\u3059\u3002\u30c7\u30d0\u30a4\u30b9\u3084\u30d6\u30e9\u30a6\u30b6\u306b\u3088\u3063\u3066\u5dee\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u8a08\u7b97\u96c6\u7d04\u578b\u306e\u51e6\u7406\u3067\u306f\u4e00\u8cab\u3057\u3066WebAssembly\u304c\u512a\u4f4d\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u958b\u767a\u74b0\u5883\u69cb\u7bc9\uff5cRust + wasm-pack \u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7<\/h2>\n\n\n<pre class=\"wp-block-code\"><code># 1. Rust \u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\ncurl --proto '=https' --tlsv1.2 -sSf https:\/\/sh.rustup.rs | sh\nsource ~\/.cargo\/env\n\n# 2. wasm-pack \u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\uff08Rust \u2192 WebAssembly \u30b3\u30f3\u30d1\u30a4\u30e9\uff09\ncurl https:\/\/rustwasm.github.io\/wasm-pack\/installer\/init.sh -sSf | sh\n\n# 3. wasm-bindgen \u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u8ffd\u52a0\nrustup target add wasm32-unknown-unknown\n\n# \u30d0\u30fc\u30b8\u30e7\u30f3\u78ba\u8a8d\nrustc --version   # rustc 1.82.0 \u4ee5\u4e0a\nwasm-pack --version  # wasm-pack 0.13 \u4ee5\u4e0a<\/code><\/pre>\n\n<pre class=\"wp-block-code\"><code># 4. \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\ncargo new --lib wasm-image-processor\ncd wasm-image-processor<\/code><\/pre>\n\n<pre class=\"wp-block-code\"><code># Cargo.toml - \u4f9d\u5b58\u95a2\u4fc2\u306e\u8a2d\u5b9a\n[package]\nname = \"wasm-image-processor\"\nversion = \"0.1.0\"\nedition = \"2021\"\n\n[lib]\ncrate-type = [\"cdylib\"]  # WebAssembly\u306b\u30b3\u30f3\u30d1\u30a4\u30eb\u3059\u308b\u306b\u306f cdylib \u304c\u5fc5\u8981\n\n[dependencies]\nwasm-bindgen = \"0.2\"  # JavaScript\u3068\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u751f\u6210\n\n[profile.release]\nopt-level = 3       # \u6700\u5927\u6700\u9069\u5316\nlto = true          # Link Time Optimization\uff08\u30d0\u30a4\u30ca\u30ea\u30b5\u30a4\u30ba\u524a\u6e1b\uff09\ncodegen-units = 1   # \u30b3\u30fc\u30c9\u751f\u6210\u5358\u4f4d\u30921\u306b\uff08\u3055\u3089\u306a\u308b\u6700\u9069\u5316\uff09<\/code><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u88c5\u30b3\u30fc\u30c9\u5168\u6587\uff5c\u753b\u50cf\u51e6\u7406\u95a2\u6570\u3092Rust\u3067\u66f8\u304f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">src\/lib.rs\uff1a\u753b\u50cf\u51e6\u7406\u95a2\u6570\u306e\u5b9f\u88c5<\/h3>\n\n\n<pre class=\"wp-block-code\"><code>\/\/ src\/lib.rs\n\nuse wasm_bindgen::prelude::*;\n\n\/\/\/ \u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u5909\u63db\n\/\/\/ Canvas \u306e ImageData\uff08RGBA \u914d\u5217\uff09\u3092\u53d7\u3051\u53d6\u3063\u3066\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u306b\u5909\u63db\u3059\u308b\n#[wasm_bindgen]\npub fn apply_grayscale(image_data: &mut [u8]) {\n    for i in (0..image_data.len()).step_by(4) {\n        let r = image_data[i] as f32;\n        let g = image_data[i + 1] as f32;\n        let b = image_data[i + 2] as f32;\n        \/\/ \u8f1d\u5ea6\u8a08\u7b97\uff08NTSC\u4fc2\u6570\uff1a\u4eba\u9593\u306e\u76ee\u306e\u611f\u5ea6\u306b\u5408\u308f\u305b\u305f\u91cd\u307f\u4ed8\u3051\uff09\n        let gray = (r * 0.299 + g * 0.587 + b * 0.114) as u8;\n        image_data[i] = gray;\n        image_data[i + 1] = gray;\n        image_data[i + 2] = gray;\n        \/\/ \u30a2\u30eb\u30d5\u30a1\u5024 (image_data[i + 3]) \u306f\u305d\u306e\u307e\u307e\n    }\n}\n\n\/\/\/ \u30bb\u30d4\u30a2\u5909\u63db\n#[wasm_bindgen]\npub fn apply_sepia(image_data: &mut [u8]) {\n    for i in (0..image_data.len()).step_by(4) {\n        let r = image_data[i] as f32;\n        let g = image_data[i + 1] as f32;\n        let b = image_data[i + 2] as f32;\n        image_data[i] = ((r * 0.393 + g * 0.769 + b * 0.189) as u8).min(255);\n        image_data[i + 1] = ((r * 0.349 + g * 0.686 + b * 0.168) as u8).min(255);\n        image_data[i + 2] = ((r * 0.272 + g * 0.534 + b * 0.131) as u8).min(255);\n    }\n}\n\n\/\/\/ \u660e\u308b\u3055\u8abf\u6574\uff08factor: 0.0\u301c2.0\u30011.0\u3067\u5909\u5316\u306a\u3057\uff09\n#[wasm_bindgen]\npub fn adjust_brightness(image_data: &mut [u8], factor: f32) {\n    for i in (0..image_data.len()).step_by(4) {\n        image_data[i] = ((image_data[i] as f32 * factor) as u8).min(255);\n        image_data[i + 1] = ((image_data[i + 1] as f32 * factor) as u8).min(255);\n        image_data[i + 2] = ((image_data[i + 2] as f32 * factor) as u8).min(255);\n    }\n}\n\n\/\/\/ \u30b3\u30f3\u30c8\u30e9\u30b9\u30c8\u8abf\u6574\uff08factor: 0.0\u301c2.0\u30011.0\u3067\u5909\u5316\u306a\u3057\uff09\n#[wasm_bindgen]\npub fn adjust_contrast(image_data: &mut [u8], factor: f32) {\n    let intercept = 128.0 * (1.0 - factor);\n    for i in (0..image_data.len()).step_by(4) {\n        image_data[i] = ((image_data[i] as f32 * factor + intercept).clamp(0.0, 255.0)) as u8;\n        image_data[i + 1] = ((image_data[i + 1] as f32 * factor + intercept).clamp(0.0, 255.0)) as u8;\n        image_data[i + 2] = ((image_data[i + 2] as f32 * factor + intercept).clamp(0.0, 255.0)) as u8;\n    }\n}\n\n\/\/\/ \u8272\u53cd\u8ee2\uff08\u30cd\u30ac\u30d5\u30a3\u30eb\u30e0\u52b9\u679c\uff09\n#[wasm_bindgen]\npub fn invert_colors(image_data: &mut [u8]) {\n    for i in (0..image_data.len()).step_by(4) {\n        image_data[i] = 255 - image_data[i];\n        image_data[i + 1] = 255 - image_data[i + 1];\n        image_data[i + 2] = 255 - image_data[i + 2];\n    }\n}\n\n\/\/\/ Sobel \u30a8\u30c3\u30b8\u691c\u51fa\n\/\/\/ width\u30fbheight \u3092\u53d7\u3051\u53d6\u3063\u3066\u30a8\u30c3\u30b8\u3092\u691c\u51fa\u3059\u308b\n#[wasm_bindgen]\npub fn apply_edge_detection(image_data: &[u8], width: u32, height: u32) -> Vec<u8> {\n    let w = width as usize;\n    let h = height as usize;\n    let mut output = vec![0u8; image_data.len()];\n\n    \/\/ \u307e\u305a\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u5909\u63db\n    let mut gray = vec![0u8; w * h];\n    for y in 0..h {\n        for x in 0..w {\n            let idx = (y * w + x) * 4;\n            let r = image_data[idx] as f32;\n            let g = image_data[idx + 1] as f32;\n            let b = image_data[idx + 2] as f32;\n            gray[y * w + x] = (r * 0.299 + g * 0.587 + b * 0.114) as u8;\n        }\n    }\n\n    \/\/ Sobel\u30d5\u30a3\u30eb\u30bf\u30fc\uff08\u7aef\u306e\u30d4\u30af\u30bb\u30eb\u306f\u9664\u5916\uff09\n    for y in 1..h-1 {\n        for x in 1..w-1 {\n            let gx = -(gray[(y-1)*w + (x-1)] as i32)\n                + (gray[(y-1)*w + (x+1)] as i32)\n                - 2*(gray[y*w + (x-1)] as i32)\n                + 2*(gray[y*w + (x+1)] as i32)\n                - (gray[(y+1)*w + (x-1)] as i32)\n                + (gray[(y+1)*w + (x+1)] as i32);\n\n            let gy = -(gray[(y-1)*w + (x-1)] as i32)\n                - 2*(gray[(y-1)*w + x] as i32)\n                - (gray[(y-1)*w + (x+1)] as i32)\n                + (gray[(y+1)*w + (x-1)] as i32)\n                + 2*(gray[(y+1)*w + x] as i32)\n                + (gray[(y+1)*w + (x+1)] as i32);\n\n            let magnitude = ((gx*gx + gy*gy) as f32).sqrt().min(255.0) as u8;\n            let idx = (y * w + x) * 4;\n            output[idx] = magnitude;\n            output[idx + 1] = magnitude;\n            output[idx + 2] = magnitude;\n            output[idx + 3] = 255;\n        }\n    }\n\n    output\n}\n\n\/\/\/ \u30d4\u30af\u30bb\u30eb\u6570\u3092\u8fd4\u3059\uff08\u30c6\u30b9\u30c8\u7528\uff09\n#[wasm_bindgen]\npub fn pixel_count(image_data: &[u8]) -> u32 {\n    (image_data.len() \/ 4) as u32\n}<\/code><\/pre>\n\n\n<h3 class=\"wp-block-heading\">\u30d3\u30eb\u30c9\u3068Web\u30da\u30fc\u30b8\u3078\u306e\u7d44\u307f\u8fbc\u307f<\/h3>\n\n\n<pre class=\"wp-block-code\"><code># WebAssembly \u3068\u3057\u3066\u30d3\u30eb\u30c9\u3059\u308b\nwasm-pack build --target web\n\n# \u958b\u767a\u6642\u306f --dev \u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u3092\u542b\u3081\u308b\nwasm-pack build --target web --dev\n\n# \u751f\u6210\u3055\u308c\u308b\u30d5\u30a1\u30a4\u30eb\npkg\/\n\u251c\u2500\u2500 wasm_image_processor.js    # JavaScript \u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\uff08wasm-bindgen\u304c\u81ea\u52d5\u751f\u6210\uff09\n\u251c\u2500\u2500 wasm_image_processor_bg.wasm  # \u30d0\u30a4\u30ca\u30ea\uff08Rust\u306e\u30b3\u30fc\u30c9\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u3055\u308c\u305f\u3082\u306e\uff09\n\u251c\u2500\u2500 wasm_image_processor.d.ts  # TypeScript\u578b\u5b9a\u7fa9\u30d5\u30a1\u30a4\u30eb\uff08\u81ea\u52d5\u751f\u6210\uff09\n\u2514\u2500\u2500 package.json               # npm\u516c\u958b\u7528\uff08\u30ed\u30fc\u30ab\u30eb\u5229\u7528\u6642\u306f\u4e0d\u8981\uff09<\/code><\/pre>\n\n\n<h3 class=\"wp-block-heading\">index.html\uff1aWasm\u3092\u8aad\u307f\u8fbc\u3093\u3067\u4f7f\u3046\u5b8c\u5168\u7248<\/h3>\n\n\n<pre class=\"wp-block-code\"><code>&lt;!-- index.html - Wasm \u3092\u8aad\u307f\u8fbc\u3093\u3067\u4f7f\u3046 --&gt;\n&lt;!DOCTYPE html&gt;\n&lt;html lang=\"ja\"&gt;\n&lt;head&gt;\n  &lt;meta charset=\"UTF-8\"&gt;\n  &lt;title&gt;Wasm \u753b\u50cf\u30d5\u30a3\u30eb\u30bf\u30fc&lt;\/title&gt;\n  &lt;style&gt;\n    body { font-family: sans-serif; max-width: 900px; margin: 0 auto; padding: 20px; }\n    canvas { max-width: 100%; border: 1px solid #ddd; border-radius: 8px; }\n    .controls { display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }\n    button { padding: 8px 16px; border: none; background: #3b82f6; color: white;\n             border-radius: 6px; cursor: pointer; }\n    button:hover { background: #2563eb; }\n    .timing { font-size: 12px; color: #666; }\n  &lt;\/style&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n  &lt;h1&gt;WebAssembly \u753b\u50cf\u30d5\u30a3\u30eb\u30bf\u30fc&lt;\/h1&gt;\n  &lt;input type=\"file\" id=\"fileInput\" accept=\"image\/*\"&gt;\n\n  &lt;div class=\"controls\"&gt;\n    &lt;button onclick=\"applyFilter('grayscale')\"&gt;\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb&lt;\/button&gt;\n    &lt;button onclick=\"applyFilter('sepia')\"&gt;\u30bb\u30d4\u30a2&lt;\/button&gt;\n    &lt;button onclick=\"applyFilter('invert')\"&gt;\u8272\u53cd\u8ee2&lt;\/button&gt;\n    &lt;button onclick=\"applyFilter('edge')\"&gt;\u30a8\u30c3\u30b8\u691c\u51fa&lt;\/button&gt;\n    &lt;button onclick=\"applyFilter('brightness')\"&gt;\u660e\u308b\u3055 +20%&lt;\/button&gt;\n    &lt;button onclick=\"applyFilter('contrast')\"&gt;\u30b3\u30f3\u30c8\u30e9\u30b9\u30c8 +30%&lt;\/button&gt;\n    &lt;button onclick=\"resetImage()\"&gt;\u30ea\u30bb\u30c3\u30c8&lt;\/button&gt;\n  &lt;\/div&gt;\n\n  &lt;p class=\"timing\" id=\"timing\"&gt;\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u9069\u7528\u3059\u308b\u3068\u3053\u3053\u306b\u51e6\u7406\u6642\u9593\u304c\u8868\u793a\u3055\u308c\u307e\u3059&lt;\/p&gt;\n\n  &lt;canvas id=\"canvas\"&gt;&lt;\/canvas&gt;\n\n  &lt;script type=\"module\"&gt;\n    import init, {\n      apply_grayscale, apply_sepia, apply_edge_detection,\n      invert_colors, adjust_brightness, adjust_contrast\n    } from '.\/pkg\/wasm_image_processor.js'\n\n    \/\/ Wasm \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u521d\u671f\u5316\n    await init()\n\n    const canvas = document.getElementById('canvas')\n    const ctx = canvas.getContext('2d')\n    let originalImageData = null\n\n    \/\/ \u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\n    document.getElementById('fileInput').addEventListener('change', (e) =&gt; {\n      const file = e.target.files[0]\n      const img = new Image()\n      img.src = URL.createObjectURL(file)\n      img.onload = () =&gt; {\n        canvas.width = img.width\n        canvas.height = img.height\n        ctx.drawImage(img, 0, 0)\n        originalImageData = ctx.getImageData(0, 0, canvas.width, canvas.height)\n      }\n    })\n\n    window.resetImage = function() {\n      if (originalImageData) ctx.putImageData(originalImageData, 0, 0)\n    }\n\n    window.applyFilter = function(filter) {\n      if (!originalImageData) return\n\n      \/\/ \u5143\u306e\u753b\u50cf\u30c7\u30fc\u30bf\u306e\u30b3\u30d4\u30fc\u3092\u53d6\u5f97\n      const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height)\n      const start = performance.now()\n\n      switch (filter) {\n        case 'grayscale':\n          apply_grayscale(imageData.data)\n          ctx.putImageData(imageData, 0, 0)\n          break\n        case 'sepia':\n          apply_sepia(imageData.data)\n          ctx.putImageData(imageData, 0, 0)\n          break\n        case 'invert':\n          invert_colors(imageData.data)\n          ctx.putImageData(imageData, 0, 0)\n          break\n        case 'brightness':\n          adjust_brightness(imageData.data, 1.2)\n          ctx.putImageData(imageData, 0, 0)\n          break\n        case 'contrast':\n          adjust_contrast(imageData.data, 1.3)\n          ctx.putImageData(imageData, 0, 0)\n          break\n        case 'edge': {\n          \/\/ \u30a8\u30c3\u30b8\u691c\u51fa\u306f\u65b0\u3057\u3044\u914d\u5217\u3092\u8fd4\u3059\n          const result = apply_edge_detection(\n            imageData.data, canvas.width, canvas.height\n          )\n          const resultImageData = new ImageData(\n            new Uint8ClampedArray(result), canvas.width, canvas.height\n          )\n          ctx.putImageData(resultImageData, 0, 0)\n          break\n        }\n      }\n\n      const elapsed = (performance.now() - start).toFixed(2)\n      document.getElementById('timing').textContent =\n        `\u51e6\u7406\u6642\u9593: ${elapsed}ms\uff08Wasm\uff09`\n    }\n  &lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Vite + React \u3078\u306e\u7d71\u5408\u65b9\u6cd5<\/h2>\n\n\n<pre class=\"wp-block-code\"><code># Vite + React \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306bWasm\u3092\u7d44\u307f\u8fbc\u3080\nnpm create vite@latest my-wasm-app --template react-ts\ncd my-wasm-app\n\n# Wasm\u5bfe\u5fdc\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\nnpm install vite-plugin-wasm vite-plugin-top-level-await<\/code><\/pre>\n\n<pre class=\"wp-block-code\"><code>\/\/ vite.config.ts\nimport { defineConfig } from 'vite'\nimport react from '@vitejs\/plugin-react'\nimport wasm from 'vite-plugin-wasm'\nimport topLevelAwait from 'vite-plugin-top-level-await'\n\nexport default defineConfig({\n  plugins: [\n    react(),\n    wasm(),\n    topLevelAwait(), \/\/ Wasm\u306e\u521d\u671f\u5316\u306btop-level await\u3092\u4f7f\u3046\u305f\u3081\n  ],\n})<\/code><\/pre>\n\n<pre class=\"wp-block-code\"><code>\/\/ src\/hooks\/useImageProcessor.ts\nimport { useState, useEffect, useRef, useCallback } from 'react'\n\ntype FilterType = 'grayscale' | 'sepia' | 'invert' | 'edge' | 'brightness' | 'contrast'\n\nexport function useImageProcessor() {\n  const [wasmReady, setWasmReady] = useState(false)\n  const wasmRef = useRef<{\n    apply_grayscale: (data: Uint8ClampedArray) => void\n    apply_sepia: (data: Uint8ClampedArray) => void\n    apply_edge_detection: (data: Uint8ClampedArray, w: number, h: number) => Uint8Array\n    invert_colors: (data: Uint8ClampedArray) => void\n    adjust_brightness: (data: Uint8ClampedArray, f: number) => void\n    adjust_contrast: (data: Uint8ClampedArray, f: number) => void\n  } | null>(null)\n\n  useEffect(() => {\n    async function loadWasm() {\n      const wasm = await import('..\/..\/pkg\/wasm_image_processor.js')\n      await wasm.default()  \/\/ Wasm\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u521d\u671f\u5316\n      wasmRef.current = wasm\n      setWasmReady(true)\n    }\n    loadWasm()\n  }, [])\n\n  const applyFilter = useCallback((\n    canvas: HTMLCanvasElement,\n    filter: FilterType\n  ): number => {\n    if (!wasmRef.current) return 0\n\n    const ctx = canvas.getContext('2d')!\n    const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height)\n    const wasm = wasmRef.current\n    const start = performance.now()\n\n    switch (filter) {\n      case 'grayscale': wasm.apply_grayscale(imageData.data); break\n      case 'sepia': wasm.apply_sepia(imageData.data); break\n      case 'invert': wasm.invert_colors(imageData.data); break\n      case 'brightness': wasm.adjust_brightness(imageData.data, 1.2); break\n      case 'contrast': wasm.adjust_contrast(imageData.data, 1.3); break\n      case 'edge': {\n        const result = wasm.apply_edge_detection(imageData.data, canvas.width, canvas.height)\n        const resultImageData = new ImageData(\n          new Uint8ClampedArray(result), canvas.width, canvas.height\n        )\n        ctx.putImageData(resultImageData, 0, 0)\n        return performance.now() - start\n      }\n    }\n\n    ctx.putImageData(imageData, 0, 0)\n    return performance.now() - start\n  }, [])\n\n  return { wasmReady, applyFilter }\n}<\/code><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Web Workers + Wasm \u306e\u7d44\u307f\u5408\u308f\u305b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WebAssembly\u306f\u9ad8\u901f\u3067\u3059\u304c\u3001\u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3067\u5b9f\u884c\u3059\u308b\u3068UI\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08\u7279\u306b4K\u4ee5\u4e0a\u306e\u5927\u304d\u306a\u753b\u50cf\uff09\u3002<strong>Web Worker\u3068WebAssembly\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001UI\u306e\u30d5\u30ea\u30fc\u30ba\u3092\u9632\u304e\u306a\u304c\u3089\u9ad8\u901f\u51e6\u7406<\/strong>\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<pre class=\"wp-block-code\"><code>\/\/ wasm-worker.js - Wasm \u3092 Worker \u5185\u3067\u5b9f\u884c\u3059\u308b\n\nimport init, { apply_grayscale, apply_sepia } from '.\/pkg\/wasm_image_processor.js'\n\n\/\/ Worker\u8d77\u52d5\u6642\u306bWasm\u3092\u521d\u671f\u5316\nawait init()\n\nself.addEventListener('message', async (event) => {\n  const { buffer, filter, width, height } = event.data\n  const imageData = new Uint8ClampedArray(buffer)\n\n  const start = performance.now()\n\n  switch (filter) {\n    case 'grayscale':\n      apply_grayscale(imageData)\n      break\n    case 'sepia':\n      apply_sepia(imageData)\n      break\n  }\n\n  const elapsed = performance.now() - start\n\n  \/\/ \u51e6\u7406\u6e08\u307f\u30d0\u30c3\u30d5\u30a1\u3092Transferable\u3067\u8fd4\u3059\uff08\u30b3\u30d4\u30fc\u306a\u3057\uff09\n  self.postMessage(\n    { buffer: imageData.buffer, elapsed },\n    [imageData.buffer]  \/\/ \u6240\u6709\u6a29\u3092\u79fb\u8ee2\u3057\u3066\u8fd4\u3059\n  )\n})<\/code><\/pre>\n\n<pre class=\"wp-block-code\"><code>\/\/ main.ts - Worker\u7d4c\u7531\u3067Wasm\u51e6\u7406\u3092\u884c\u3046\n\nconst wasmWorker = new Worker(new URL('.\/wasm-worker.js', import.meta.url), {\n  type: 'module'\n})\n\nasync function applyFilterInWorker(canvas: HTMLCanvasElement, filter: string) {\n  const ctx = canvas.getContext('2d')!\n  const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height)\n  const buffer = imageData.data.buffer\n\n  return new Promise&lt;number&gt;((resolve) => {\n    wasmWorker.addEventListener('message', (e) => {\n      const resultData = new Uint8ClampedArray(e.data.buffer)\n      const resultImageData = new ImageData(resultData, canvas.width, canvas.height)\n      ctx.putImageData(resultImageData, 0, 0)\n      resolve(e.data.elapsed)\n    }, { once: true })\n\n    \/\/ Transferable\u3067Worker\u306b\u9001\u308b\n    wasmWorker.postMessage(\n      { buffer, filter, width: canvas.width, height: canvas.height },\n      [buffer]\n    )\n  })\n}<\/code><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u65e2\u5b58\u306eWasm\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u6d3b\u7528\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u81ea\u5206\u3067Rust\u3092\u66f8\u304b\u306a\u304f\u3066\u3082\u3001\u65e2\u306bWebAssembly\u306b\u5bfe\u5fdc\u3057\u305f\u65e2\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30e9\u30a4\u30d6\u30e9\u30ea<\/th><th>\u7528\u9014<\/th><th>\u7279\u5fb4<\/th><\/tr><\/thead><tbody><tr><td><strong>ffmpeg.wasm<\/strong><\/td><td>\u52d5\u753b\u30a8\u30f3\u30b3\u30fc\u30c9\u30fb\u5909\u63db\u30fb\u30b5\u30e0\u30cd\u30a4\u30eb\u751f\u6210<\/td><td>C\/C++\u306effmpeg\u3092Wasm\u5316\u3002\u30d6\u30e9\u30a6\u30b6\u3067\u52d5\u753b\u5909\u63db\u304c\u53ef\u80fd<\/td><\/tr><tr><td><strong>OpenCV.js<\/strong><\/td><td>\u753b\u50cf\u8a8d\u8b58\u30fb\u9854\u691c\u51fa\u30fb\u7279\u5fb4\u70b9\u62bd\u51fa<\/td><td>OpenCV\u306eWasm\u7248\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30d3\u30b8\u30e7\u30f3\u5168\u822c\u306b\u5bfe\u5fdc<\/td><\/tr><tr><td><strong>Sharp\uff08wasm\u7248\uff09<\/strong><\/td><td>\u9ad8\u901f\u753b\u50cf\u30ea\u30b5\u30a4\u30ba\u30fb\u5909\u63db<\/td><td>Node.js\u306e\u753b\u50cf\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30d6\u30e9\u30a6\u30b6\u3067\u4f7f\u3048\u308b<\/td><\/tr><tr><td><strong>SQLite\uff08sql.js\uff09<\/strong><\/td><td>\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067SQLite<\/td><td>\u30b5\u30fc\u30d0\u30fc\u306a\u3057\u3067SQL\u5b9f\u884c\u30fb\u30c7\u30fc\u30bf\u5206\u6790<\/td><\/tr><tr><td><strong>TensorFlow Lite for Web<\/strong><\/td><td>\u6a5f\u68b0\u5b66\u7fd2\u63a8\u8ad6<\/td><td>\u8efd\u91cf\u30e2\u30c7\u30eb\u3092Wasm\u3067\u9ad8\u901f\u63a8\u8ad6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<pre class=\"wp-block-code\"><code>\/\/ ffmpeg.wasm \u306e\u4f7f\u7528\u4f8b\uff1a\u30d6\u30e9\u30a6\u30b6\u3067\u52d5\u753b\u3092GIF\u306b\u5909\u63db\n\nimport { createFFmpeg, fetchFile } from '@ffmpeg\/ffmpeg'\n\nconst ffmpeg = createFFmpeg({ log: true })\n\nasync function convertToGif(videoFile: File): Promise&lt;string&gt; {\n  await ffmpeg.load()\n\n  const inputName = 'input.mp4'\n  const outputName = 'output.gif'\n\n  ffmpeg.FS('writeFile', inputName, await fetchFile(videoFile))\n\n  \/\/ FFmpeg\u30b3\u30de\u30f3\u30c9\u3067\u5909\u63db\uff0810fps\u3001480px\u5e45\u306eGIF\uff09\n  await ffmpeg.run(\n    '-i', inputName,\n    '-vf', 'fps=10,scale=480:-1:flags=lanczos',\n    '-loop', '0',\n    outputName\n  )\n\n  const data = ffmpeg.FS('readFile', outputName)\n  const url = URL.createObjectURL(new Blob([data.buffer], { type: 'image\/gif' }))\n\n  return url\n}<\/code><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30e1\u30e2\u30ea\u7ba1\u7406\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">WebAssembly\u306f\u7dda\u5f62\u30e1\u30e2\u30ea\u3092\u4f7f\u3044\u307e\u3059\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u521d\u671f64KB\u304b\u3089\u6700\u59274GB\u307e\u3067\u62e1\u5f35\u53ef\u80fd\u3067\u3059\u3002Rust\u306ewasm-bindgen\u3092\u4f7f\u3046\u5834\u5408\u306f\u81ea\u52d5\u7684\u306b\u30e1\u30e2\u30ea\u7ba1\u7406\u304c\u884c\u308f\u308c\u308b\u305f\u3081\u3001\u901a\u5e38\u306f\u610f\u8b58\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Wasm\u306e\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u76e3\u8996\u3059\u308b\n\n\/\/ Wasm \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u30e1\u30e2\u30ea\u60c5\u5831\u3092\u78ba\u8a8d\nimport init, { __wasm } from '.\/pkg\/wasm_image_processor.js'\nawait init()\n\n\/\/ WebAssembly.Memory \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u4f7f\u7528\u91cf\u3092\u78ba\u8a8d\nconst memory = __wasm.memory\nconsole.log(`Wasm\u30e1\u30e2\u30ea: ${memory.buffer.byteLength \/ 1024 \/ 1024}MB`)\n\n\/\/ \u51e6\u7406\u5f8c\u306e\u30e1\u30e2\u30ea\u89e3\u653e\uff08Rust\u306ewasm-bindgen\u304c\u7ba1\u7406\u3059\u308b\u305f\u3081\u901a\u5e38\u4e0d\u8981\uff09\n\/\/ \u305f\u3060\u3057 Vec&lt;u8&gt; \u3092\u8fd4\u3059\u95a2\u6570\u306f\u547c\u3073\u51fa\u3057\u5f8c\u306b\u81ea\u52d5\u89e3\u653e\u3055\u308c\u308b<\/code><\/pre>\n\n\n<h3 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u89e3\u6c7a\u65b9\u6cd5<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u30a8\u30e9\u30fc<\/th><th>\u539f\u56e0<\/th><th>\u89e3\u6c7a\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td><code>WebAssembly.instantiate(): ...is not an ArrayBuffer<\/code><\/td><td>wasm\u30d5\u30a1\u30a4\u30eb\u306eMIME\u30bf\u30a4\u30d7\u304c\u9593\u9055\u3063\u3066\u3044\u308b<\/td><td>\u30b5\u30fc\u30d0\u30fc\u3067<code>application\/wasm<\/code>\u3092\u8a2d\u5b9a<\/td><\/tr><tr><td><code>TypeError: wasm.xxx is not a function<\/code><\/td><td>wasm-bindgen\u306e\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u304c\u672a\u751f\u6210<\/td><td><code>wasm-pack build<\/code>\u3092\u518d\u5b9f\u884c<\/td><\/tr><tr><td>Wasm\u304c\u521d\u671f\u5316\u524d\u306b\u547c\u3070\u308c\u305f<\/td><td><code>await init()<\/code>\u306e\u524d\u306b\u95a2\u6570\u3092\u547c\u3093\u3067\u3044\u308b<\/td><td>\u5fc5\u305a<code>await init()<\/code>\u306e\u5f8c\u306b\u4f7f\u7528\u3059\u308b<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u4e0d\u8db3\u30a8\u30e9\u30fc<\/td><td>\u5927\u304d\u3059\u304e\u308b\u753b\u50cf\u3092\u4e00\u5ea6\u306b\u51e6\u7406<\/td><td>\u753b\u50cf\u3092\u5206\u5272\u51e6\u7406\u3059\u308b\u304b\u3001Web Worker\u306b\u79fb\u3059<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">WebAssembly\u306e\u5b9f\u7528\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b95\u9078<\/h2>\n\n\n<pre class=\"wp-block-code\"><code>\u3010WebAssembly \u304c\u7279\u306b\u52b9\u679c\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3011\n\n1. \u753b\u50cf\u30fb\u52d5\u753b\u51e6\u7406\n\u2192 OpenCV.js\uff08\u753b\u50cf\u8a8d\u8b58\u30fb\u9854\u691c\u51fa\uff09\u306eWasm\u7248\n\u2192 ffmpeg.wasm \u3067\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067\u306e\u52d5\u753b\u30a8\u30f3\u30b3\u30fc\u30c9\u30fb\u5909\u63db\n\u2192 \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u52d5\u753b\u30d5\u30a3\u30eb\u30bf\u30fc\uff08\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406\uff09\n\n2. \u30b2\u30fc\u30e0\u958b\u767a\n\u2192 Unity\u306eWebGL\u30d3\u30eb\u30c9\uff08WebAssembly + WebGL\uff09\n\u2192 Unreal Engine\u306eHTML5\u30d3\u30eb\u30c9\n\u2192 \u7269\u7406\u30a8\u30f3\u30b8\u30f3\uff08Bullet Physics \u306eWasm\u7248\uff09\n\n3. \u6697\u53f7\u5316\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\n\u2192 Rust\u3067\u66f8\u3044\u305f\u6697\u53f7\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30b5\u30a4\u30c9\u3067\u9ad8\u901f\u5b9f\u884c\n\u2192 \u79d8\u5bc6\u9375\u3092\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u3089\u305a\u30d6\u30e9\u30a6\u30b6\u5185\u3067\u51e6\u7406\uff08e2e\u6697\u53f7\u5316\uff09\n\u2192 Password\u306eKDF\u3092Wasm\u3067\u9ad8\u901f\u5316\n\n4. \u30c7\u30fc\u30bf\u51e6\u7406\u30fb\u5206\u6790\n\u2192 \u5927\u91cfCSV\u306e\u30d1\u30fc\u30b9\u30fb\u96c6\u8a08\u3092Wasm\u3067\u9ad8\u901f\u5316\n\u2192 SQLite\u306eWasm\u7248\uff08sqlite3.wasm\uff09\u3067\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067SQL\u5b9f\u884c\n\u2192 DuckDB-WASM \u306b\u3088\u308b\u30d6\u30e9\u30a6\u30b6\u4e0a\u306eOLAP\u5206\u6790\n\n5. \u79d1\u5b66\u8a08\u7b97\u30fb\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\n\u2192 \u7269\u7406\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\uff08\u6d41\u4f53\u30fb\u7c92\u5b50\u7cfb\u30fb\u5206\u5b50\u52d5\u529b\u5b66\uff09\n\u2192 \u6a5f\u68b0\u5b66\u7fd2\u63a8\u8ad6\uff08TensorFlow Lite for WebAssembly\uff09\n\u2192 \u97f3\u58f0\u51e6\u7406\u30fb\u97f3\u697d\u5408\u6210\u30a8\u30f3\u30b8\u30f3<\/code><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Rust\u3067\u306a\u3044\u3068WebAssembly\u306f\u66f8\u3051\u307e\u305b\u3093\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3044\u3044\u3048\u3002C\/C++\uff08Emscripten\uff09\u30fbGo\uff08GOARCH=wasm\uff09\u30fbAssemblyScript\uff08TypeScript\u30e9\u30a4\u30af\uff09\u30fbZig\u306a\u3069\u3067\u3082\u66f8\u3051\u307e\u3059\u3002Rust\u306f\u30e1\u30e2\u30ea\u30bb\u30fc\u30d5\u3067WebAssembly\u3068\u306e\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\uff08wasm-bindgen\u30fbwasm-pack\uff09\u304c\u5145\u5b9f\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u65b0\u898f\u958b\u767a\u3067\u306f\u6700\u3082\u304a\u3059\u3059\u3081\u3067\u3059\u3002JavaScript\u306b\u8fd1\u3044\u6587\u6cd5\u3067Wasm\u3092\u66f8\u304d\u305f\u3044\u5834\u5408\u306fAssemblyScript\u304c\u5165\u9580\u3057\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">WebAssembly\u306f\u3059\u3079\u3066\u306e\u51e6\u7406\u3092\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8a08\u7b97\u96c6\u7d04\u578b\u306e\u51e6\u7406\u306b\u306e\u307f\u6709\u52b9\u3067\u3059\u3002<\/strong>DOM\u64cd\u4f5c\u30fb\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u30fbAPI\u547c\u3073\u51fa\u3057\u306fJavaScript\u304c\u62c5\u3044\u307e\u3059\u3002Wasm\u3068JavaScript\u9593\u306e\u30c7\u30fc\u30bf\u8ee2\u9001\u306b\u306f\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u3042\u308b\u305f\u3081\u3001\u5c0f\u3055\u306a\u30c7\u30fc\u30bf\u306e\u983b\u7e41\u306a\u3084\u308a\u3068\u308a\u3088\u308a\u3082\u3001\u5927\u304d\u306a\u30c7\u30fc\u30bf\u3092\u4e00\u62ec\u51e6\u7406\u3059\u308b\u30b1\u30fc\u30b9\u306b\u5411\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">WebAssembly\u306e\u30d0\u30f3\u30c9\u30eb\u30b5\u30a4\u30ba\u306f\u3069\u306e\u304f\u3089\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Rust\u3067\u66f8\u3044\u305f\u7c21\u5358\u306a\u753b\u50cf\u51e6\u7406\u30e9\u30a4\u30d6\u30e9\u30ea\u3060\u3068\u3001\u6700\u9069\u5316\u5f8c\uff08<code>opt-level=3<\/code>\u30fb<code>lto=true<\/code>\uff09\u306ewasm\u30d0\u30a4\u30ca\u30ea\u306f10\u301c50KB\u7a0b\u5ea6\u306b\u306a\u308a\u307e\u3059\u3002gzip\u5727\u7e2e\u5f8c\u306f\u3055\u3089\u306b\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002ffmpeg.wasm\u306e\u3088\u3046\u306a\u5927\u578b\u30e9\u30a4\u30d6\u30e9\u30ea\u306f10MB\u4ee5\u4e0a\u306b\u306a\u308b\u305f\u3081\u3001\u9045\u5ef6\u8aad\u307f\u8fbc\u307f\uff08\u52d5\u7684import\u307e\u305f\u306fCDN\uff09\u304c\u63a8\u5968\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Wasm\u306e\u30c7\u30d0\u30c3\u30b0\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>wasm-pack build --dev<\/code>\u3067\u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u3092\u542b\u3081\u3066\u30d3\u30eb\u30c9\u3059\u308b\u3068\u3001Chrome DevTools\u3067Rust\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306b\u30b9\u30c6\u30c3\u30d7\u30a4\u30f3\u3067\u304d\u307e\u3059\uff08DWARF debuginfo\u304c\u6709\u52b9\u306a\u5834\u5408\uff09\u3002\u307e\u305f<code>#[wasm_bindgen]<\/code>\u4ed8\u304d\u306e\u95a2\u6570\u306b<code>web_sys::console::log_1()<\/code>\u3092\u633f\u5165\u3057\u3066JavaScript\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u30ed\u30b0\u3092\u51fa\u3059\u65b9\u6cd5\u3082\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Wasm\u3092NPM\u30d1\u30c3\u30b1\u30fc\u30b8\u3068\u3057\u3066\u516c\u958b\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3067\u304d\u307e\u3059\u3002<code>wasm-pack publish<\/code>\u30b3\u30de\u30f3\u30c9\u3067\u751f\u6210\u3055\u308c\u305f<code>pkg\/<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092npm\u306b\u516c\u958b\u3067\u304d\u307e\u3059\u3002<code>--target bundler<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u3067Vite\/Webpack\u5411\u3051\u306b\u6700\u9069\u5316\u3055\u308c\u305f\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>WebAssembly\u306fJavaScript\u3088\u308a2\u301c4\u500d\u9ad8\u901f\uff1a<\/strong>\u8a08\u7b97\u96c6\u7d04\u578b\u306e\u753b\u50cf\u51e6\u7406\u30fb\u6697\u53f7\u5316\u30fb\u5927\u91cf\u30c7\u30fc\u30bf\u51e6\u7406\u306b\u7279\u306b\u6709\u52b9\u3002DOM\u64cd\u4f5c\u306fJavaScript\u304c\u62c5\u3046\u5f79\u5272\u5206\u62c5\u304c\u57fa\u672c<\/li>\n\n\n\n<li><strong>\u958b\u767a\u30d5\u30ed\u30fc\uff1a<\/strong>Rust\u3067\u51e6\u7406\u3092\u66f8\u304f \u2192 <code>wasm-pack build --target web<\/code> \u2192 \u751f\u6210\u3055\u308c\u305f.js\/.wasm\u30d5\u30a1\u30a4\u30eb\u3092HTML\u3084Vite\u304b\u3089\u8aad\u307f\u8fbc\u3080<\/li>\n\n\n\n<li><strong>JavaScript\u9023\u643a\u30d1\u30bf\u30fc\u30f3\uff1a<\/strong>Canvas\u306eImageData\u3092\u6e21\u3057\u3066Wasm\u3067\u51e6\u7406\u3057\u7d50\u679c\u3092\u8fd4\u3059\u65b9\u6cd5\u304c\u753b\u50cf\u51e6\u7406\u306e\u57fa\u672c\u3002\u5927\u304d\u306a\u30c7\u30fc\u30bf\u306fTransferable\u3067\u6e21\u3059\u3068\u52b9\u7387\u7684<\/li>\n\n\n\n<li><strong>Web Workers\u7d44\u307f\u5408\u308f\u305b\uff1a<\/strong>Wasm\u3092Worker\u5185\u3067\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001UI\u306e\u30d5\u30ea\u30fc\u30ba\u3092\u9632\u304e\u306a\u304c\u3089\u9ad8\u901f\u51e6\u7406\u3067\u304d\u308b<\/li>\n\n\n\n<li><strong>\u65e2\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u6d3b\u7528\uff1a<\/strong>ffmpeg.wasm\u30fbOpenCV.js\u30fbSQLite.wasm\u306a\u3069\u8c4a\u5bcc\u306aWasm\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u6d3b\u7528\u3059\u308c\u3070\u3001Rust\u3092\u66f8\u304b\u305a\u306b\u9ad8\u901f\u51e6\u7406\u3092\u7d44\u307f\u8fbc\u3081\u308b<\/li>\n\n\n\n<li><strong>\u30e1\u30e2\u30ea\u7ba1\u7406\uff1a<\/strong>Rust\u306ewasm-bindgen\u304c\u81ea\u52d5\u7ba1\u7406\u3059\u308b\u305f\u3081\u901a\u5e38\u306f\u4e0d\u8981\u3002\u5927\u304d\u306a\u753b\u50cf\u306f\u5206\u5272\u51e6\u7406\u304bWeb Worker\u3078\u306e\u79fb\u884c\u3067\u5bfe\u51e6\u3059\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">WebAssembly\u306f\u300cJavaScript\u306e\u9650\u754c\u300d\u3092\u611f\u3058\u305f\u5834\u9762\u3067\u9078\u3076\u6280\u8853\u3067\u3059\u3002\u65e2\u5b58\u306eRust\/C++\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u6d3b\u7528\u3067\u304d\u308b\u70b9\u3082\u5927\u304d\u306a\u5f37\u307f\u3067\u3059\u3002Web Workers\u3068Wasm\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3001UI\u306e\u30d5\u30ea\u30fc\u30ba\u306a\u304f\u9ad8\u901f\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u307e\u305a\u5c0f\u3055\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3067\u8a66\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/span><\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">WithCode\u3092\u4f53\u9a13\u3067\u304d\u308b\u521d\u7d1a\u30b3\u30fc\u30b9\u516c\u958b\u4e2d\uff01<\/h2>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/withcode.tech\/reservation\/\" style=\"background-color:#ffbf00\"><strong>\u516c\u5f0f\u30b5\u30a4\u30c8\u304b\u3089\u7121\u6599\u30ab\u30a6\u30f3\u30bb\u30ea\u30f3\u30b0\u306b\u7533\u3057\u8fbc\u3080 \u2192<\/strong><\/a><\/div>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>WebAssembly\u3067\u30d6\u30e9\u30a6\u30b6\u4e0a\u306e\u753b\u50cf\u51e6\u7406\u3092JavaScript\u306e2\u301c4\u500d\u9ad8\u901f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u5b8c\u5168\u89e3\u8aac\u3002Rust\u30fbwasm-pack\u306e\u74b0\u5883\u69cb\u7bc9\u304b\u3089\u30b0\u30ec\u30fc\u30b9\u30b1\u30fc\u30eb\u30fbSobel\u30a8\u30c3\u30b8\u691c\u51fa\u306e\u5b9f\u88c5\u3001Vite\/React\u7d71\u5408\u3001Web Workers\u9023\u643a\u307e\u3067\u5b9f\u8df5\u30b3\u30fc\u30c9\u4ed8\u304d\u3067\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"swell_btn_cv_data":"","footnotes":"","vk-ltc-link":"","vk-ltc-target":"0"},"categories":[34,359],"tags":[],"class_list":["post-13181","post","type-post","status-publish","format-standard","hentry","category-programming","category-javascript-programming"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/posts\/13181","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/comments?post=13181"}],"version-history":[{"count":2,"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/posts\/13181\/revisions"}],"predecessor-version":[{"id":13981,"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/posts\/13181\/revisions\/13981"}],"wp:attachment":[{"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/media?parent=13181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/categories?post=13181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/withcode.tech\/media\/wp-json\/wp\/v2\/tags?post=13181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}