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Face Detection in JavaScript via HTML5 Canvas
Badass JavaScriptA showcase of awesome JavaScript that pushes the boundaries of what's possible on the web, by @devongovett. You have probably seen face detection at work in programs like iPhoto and Picasa, but what if you could do that performantly in JavaScript?  Chinese developer Liu Liu has done the honors, and implemented the algorithm using the canvas element. The algorithm is implemented on
ベンãƒãƒžãƒ¼ã‚¯ for canvasã‚¿ã‚°ã¨canvas on Flash 2010 - yukobaã®ãƒ–ãƒã‚°
追記：canvasã‚¿ã‚°ã‚’8å€é«˜é€ŸåŒ–ã™ã‚‹æ–¹æ³•ï¼†FlashCanvasãŒ4å€é€Ÿããªã£ãŸ - yukobaã®ãƒ–ãƒã‚°ã‚‚åˆã‚ã›ã¦ã”覧ãã ã•ã„。 最近ã€canvasタグを利用ã—ãŸã‚¢ãƒ—リã®é«˜é€ŸåŒ–ã«åŠ±ã‚“ã§ã„ã¾ã™ã€‚何ã‹è‰¯ã„ベンãƒãƒžãƒ¼ã‚¯ã¯ãªã„ã‹ãªã¨æ€ã„探ã—ã¦ã„ãŸã‚‰ã€ã€ŒCanvasã®drawImageã®ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ - yukobaã®ãƒ–ãƒã‚°ã€ã‹ã‚‰ãƒªãƒ³ã‚¯ã‚’å¼µã£ã¦ã‚るベンãƒãƒžãƒ¼ã‚¯ã«è¡Œã当ãŸã‚Šã€æœ€åˆã€ã€Œã¸ã‡ã€œã“ã‚“ãªã®ä½œã£ãŸäººãŒã„ãŸã‚“ã ã€ã¨ã‹æ€ã£ã¦ã€ãƒ‰ãƒ¡ã‚¤ãƒ³ã‚’よã見ãŸã‚‰1å¹´åŠå‰ã®è‡ªåˆ†ã§ã—㟠orz ã¨ã„ã†ã‚ã‘ã§ã€ãã‚Œã®2010å¹´ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã€‚パワーアップã—ã¾ã™ã€‚ ã¾ãšã€æœ€è¿‘ã€FlashCanvas Pro 㨠uuCanvas.js ã¨ã„ã†canvasã‚¿ã‚°ã‚’Flash上ã§ä½¿ãˆã‚‹ã‚ˆã†ã«ã™ã‚‹ã€éžå¸¸ã«è‰¯ã„ライブラリãŒå‡ºã¾ã—ãŸã€‚å¤å…¸çš„ã«ã¯ã€VML on IEを使ã£ãŸãƒ©ã‚¤ãƒ–ラリãŒæœ‰åãªã®ã§ã™ãŒã€ã‚¹ãƒ”ードãŒé…ã„上ã€å…¨ã¦ã®APIをサãƒ
html5㧠videoã®ä»»æ„ã®ãƒ•ãƒ¬ãƒ¼ãƒ ã‚’canvasã«æç”»ã™ã‚‹ãƒ¡ãƒ¢ - 超自己満足プãƒã‚°ãƒ©ãƒŸãƒ³ã‚°
デブサミ2010ã®html5セッションã§è¦‹ãŸãƒ‡ãƒ¢ï¼ˆMovement tracker）*1 ãŒã€ è¡æ’ƒçš„ã ã£ãŸã®ã§ video x canvas ã‚’ã¡ã‚‡ã£ã¨å‹‰å¼·ã—ãŸã€‚ １．videoã®ä»»æ„ã®ãƒ•ãƒ¬ãƒ¼ãƒ ã‚’ãã®ã¾ã¾canvasã«æç”»ã•ã›ã¦ã¿ã‚‹ htmlã®bodyã«æ›¸ãã«ã¯ã“ã‚Œã ã‘。 <video id="v" src="video.ogv" autobuffer controls></video> <canvas id="c"></canvas> <input type="button" value="copy frame" onclick="copyFrame()" /> copy frameボタンã§å‘¼ã³å‡ºã•ã‚Œã‚‹javascriptã¯ã“ã‚“ãªæ„Ÿã˜ã€‚ function copyFrame() { var cEle = document.getElementById('c'); var cCtx =
canvasã‚¿ã‚°ã‚’8å€é«˜é€ŸåŒ–ã™ã‚‹æ–¹æ³•ï¼†FlashCanvasãŒ4å€é€Ÿããªã£ãŸ - yukobaã®ãƒ–ãƒã‚°
最近ã€ãƒ–ãƒã‚°ã‚’書ã„ã¦ã€æ¯Žå›žã€èªã‚“ã ãã ã•ã£ãŸæ–¹ã‹ã‚‰ã€è²´é‡ãªæƒ…å ±ã‚’æ•™ãˆã¦ã‚‚らã£ã¦ã„ã¾ã™ã€‚大変ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚ ベンãƒãƒžãƒ¼ã‚¯ for canvasã‚¿ã‚°ã¨canvas on Flash 2010 - yukobaã®ãƒ–ãƒã‚°ã§ã™ãŒã€ã‚³ãƒ¡ãƒ³ãƒˆæ¬„＆http://www.revulo.com/blog/20100311.html#p01ã«ã‚ˆã‚‹ã¨ã€drawImage()ã§æ¸¡ã™åº§æ¨™ã¯ã€ä»•æ§˜ä¸Š "float" ã¨ãªã£ã¦ã„ã‚‹ã®ã§ã™ãŒã€ã“ã“ã« "int" を渡ã™ã¨é«˜é€ŸåŒ–ã™ã‚‹ãã†ã§ã™ã€‚具体的ã«ã¯ã€Math.random() * 750 ã‚’ Math.random() * 750 | 0 ã«ã—ã¾ã™ã€‚"| 0"ã§ã€float → int ã§ã™ã€‚ ã¾ãŸã€FlashCanvas Pro ã¯ä»Šã€1.2 α3 ã§ã™ãŒã€1.2ã«ãªã£ã¦ã€é«˜é€ŸåŒ–ã—ãŸã®ã§ï¼ˆä¸Šã®ãƒ–ãƒã‚°å‚照）ã€ãれをå«ã‚ã¦ãƒ†ã‚¹ãƒˆã—ã¦ã¿ã¾ã—ãŸã€‚ ブラウザ 時間 高速化
video and canvas « aduca
HTML5ã®videoã¨canvasã§éŠã‚“ã§ã¿ã‚‹ã€‚ ã‚„ã‚‹ã“ã¨ã¯ã”ãã”ãå˜ç´”ã§ã€videoã‚’å†ç”Ÿã—ãªãŒã‚‰ã€videoをソースã«canvasã«æç”»ã€ãã®canvasã‹ã‚‰bitmapé…列をã¨ã£ã¦ãƒ¢ãƒŽã‚¯ãƒã«ã—ã¦ã‚‚ã†ã„ã£ã“ã®canvasã«æ画。ã¨ã„ã†ã ã‘。 å•é¡Œã¯ã©ã†è€ƒãˆã¦ã‚‚書ãæ–¹ãŒæ‚ªã„ã›ã„ã§æ„Ÿå‹•çš„ãªã»ã©é‡ã„ã£ã¦ã“ã¨ã§ã™ã€‚ Google chrome, safari(多分)ã§å‹•ãã¾ã™ã€‚ http://www.aduca.org/content/html5/video_and_canvas/ å‹•ç”»ã¯ã“ã“ã‹ã‚‰å€Ÿã‚Šã¦ãã¾ã—ãŸã€‚ã‹ã£ã“ã„ã„。
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ç”»åƒç·¨é›†ã™ã‚‹HTML5デモ - Underconstruction by Taiyo
HTML5 3Daysã®Hackathonã§ãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—を作æˆã—ãŸpbeditã®ã‚ªãƒ³ãƒ©ã‚¤ãƒ³ãƒ‡ãƒ¢ãƒ³ã‚¹ãƒˆãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’公開ã—ãŸã€‚ http://web.me.com/t_trace/pbedit/image_loader.html 並んã§ã„るサムãƒã‚¤ãƒ«ã‚’クリックã™ã‚‹ã¨ç·¨é›†ç”»é¢ã¸ç§»å‹•ã—ã€RGBãƒãƒ£ãƒ³ãƒãƒ«ã®ã‚¹ã‚±ãƒ¼ãƒ«ç·¨é›†ãŒå¯èƒ½ã§ã™ã€‚ 動作環境ã¯Safari 4.0（検証ã—ã¦ãªã„ã ã‘ã§ã™ãŒï¼‰ã€‚ ãƒãƒ¼ã‚«ãƒ«ãƒ•ã‚¡ã‚¤ãƒ«ã‹ã‚‰å®Ÿè¡Œã™ã‚‹ã¨ã‚¯ãƒªãƒƒãƒ—ボード経由ã§ç·¨é›†ã™ã‚‹ç”»åƒã‚’èªã¿ã“ã‚“ã§ç·¨é›†ã§ãã¾ã™ã€‚ ãƒãƒ¼ã‚«ãƒ«å®Ÿè¡Œã®ãŸã‚ã«.zipã§å›ºã‚ãŸãƒ•ã‚¡ã‚¤ãƒ«ã¯githubã‹ã‚‰ã©ã†ãžã€‚ http://github.com/ttrace/pbdit/downloads ã“ã®ãƒ‡ãƒ¢ãƒ³ã‚¹ãƒˆãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’作æˆã™ã‚‹ã«ã‚ãŸã£ã¦ã„ãã¤ã‹HTML5 3Daysã§æ案ã•ã‚Œã¦ã„ãŸã“ã¨ã‚’試ã¿ã¾ã—ãŸã€‚ 1. Web Workersを用ã„ãŸéžåŒæœŸå‡¦ç† 2. Web
Mozilla Party 10 ã®è³‡æ–™ - 最速ãƒãƒ¥ãƒ‘ã‚«ãƒ–ãƒ©ç ”ç©¶ä¼š
Mozilla Party 10 ã§canvasã®è©±ã‚’ã—ã¦ãã¾ã—ãŸã®ã§è³‡æ–™ã‚’公開ã—ã¾ã™ã€‚ http://www.slideshare.net/gyuque/mozilla-party-2009-canvas-programming デモã¯ä»¥ä¸‹ã®URLã«ã‚ã‚Šã¾ã™ http://gyu.que.jp/jscloth/touch-opera-gecko.html 海外ã‹ã‚‰ã®ã‚²ã‚¹ãƒˆã®ãŸã‚ã«é€šè¨³ãŒã¤ã„ã¦ã„ãŸã®ã§ã™ãŒã€ãƒœãƒ©ãƒ³ãƒ†ã‚£ã‚¢ã®å¦ç”Ÿã•ã‚“ã ã£ãŸãã†ã§ã™ã€‚普通ã«ãŠé‡‘を出ã—ã¦ä¾é ¼ã—ãŸã‚‚ã®ã ã¨æ€ã£ã¦ã„ãŸã®ã§ã€é–‰ä¼šã®æŒ¨æ‹¶ã®ã¨ãã«çŸ¥ã£ã¦ã³ã£ãã‚Šã—ã¾ã—ãŸã€‚ ä¼šå ´ã®è³ªå•ã§ Flash ã¨æ¯”ã¹ã¦ã©ã†ãªã‚“ã ã¨èžã‹ã‚Œã€ä»Šã®æ™‚点ã§ã¯ã€è‡ªåˆ†ãŒä»•äº‹ã§ Web ãƒšãƒ¼ã‚¸ã‚’ä½œã‚‹ç«‹å ´ã ã£ãŸã‚‰ç„¡é›£ã« Flash を使ã†ã¨ç”ãˆã¾ã—ãŸï¼ˆã€Œãる。ã€ã¯ã‚ãã¾ã§è¶£å‘³ãªã®ã§ã€IE ãªã‚“ã¦æ°—ã«ã›ãš canvas を使ãˆãŸã‚ã‘ã§ã™ï¼‰ã€‚ 悲ã—ã„ã“ã¨ã«ã€
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Paper.js
Canvas Cycle: True 8-bit Color Cycling with HTML5
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