{"id":1849,"date":"2009-06-09T19:40:17","date_gmt":"2009-06-09T10:40:17","guid":{"rendered":"http:\/\/r-dimension.xsrv.jp\/classes_j\/?p=1849"},"modified":"2011-05-04T21:52:43","modified_gmt":"2011-05-04T12:52:43","slug":"image_processing2_2009","status":"publish","type":"post","link":"https:\/\/r-dimension.xsrv.jp\/classes_j\/image_processing2_2009\/","title":{"rendered":"\u753b\u50cf\u51e6\u74062"},"content":{"rendered":"

\u524d\u306e\u753b\u50cf\u51e6\u74061\u306e\u5185\u5bb9\u306f\u3001\u539f\u7406\u7684\u306a\u3053\u3068\u306b\u89e6\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u7d50\u69cb\u96e3\u3057\u304b\u3063\u305f\u4eba\u3082\u3044\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002
\n\u4eca\u56de\u306f\u3001\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u30a2\u30fc\u30c8\u4f5c\u54c1\u306b\u5229\u7528\u3059\u308b\u305f\u3081\u306e\u3088\u308a\u5b9f\u8df5\u7684\u306a\u65b9\u6cd5\u3092\u5b66\u3073\u307e\u3059\u3002<\/p>\n

\u307e\u305a\u3001\u3053\u308c\u304b\u3089\u6271\u3046\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u6b63\u5e38\u306b\u52d5\u304b\u3059\u305f\u3081\u306b\u3001\u9732\u51fa\u56fa\u5b9a\u304c\u53ef\u80fd\u306a\u30ab\u30e1\u30e9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002MacBook\u306a\u3069\u306b\u642d\u8f09\u3055\u308c\u3066\u3044\u308b\u30ab\u30e1\u30e9\u3084USB\u30ab\u30e1\u30e9\u306b\u306f\u3053\u306e\u3088\u3046\u306a\u6a5f\u80fd\u304c\u4ed8\u3044\u3066\u3044\u306a\u3044\u306e\u3067\u3001Firewire (iLink)\u304c\u4ed8\u3044\u3066\u3044\u308bDV\u30ab\u30e1\u30e9\u306a\u3069\u304c\u4e00\u756a\u9069\u3057\u3066\u3044\u307e\u3059\u3002
\n\u30a4\u30f3\u30b9\u30bf\u30ec\u30fc\u30b7\u30e7\u30f3\u306a\u3069\u306b\u4f7f\u3046\u5834\u5408\u306f\u3001Firewire\u306e\u9577\u3055\u306b\u9650\u754c\u304c\u3042\u308b\uff08\u6700\u95774.5m\uff09\u306e\u3067\u3001\u9577\u304f\u7e4b\u304e\u305f\u3044\u5834\u5408\u306b\u306f\u3001\u901a\u5e38\u306e\u30d3\u30c7\u30aa\u30b3\u30fc\u30c9\u3092\u30ab\u30e1\u30e9\u306b\u4ed8\u3051\u3001\u30d1\u30bd\u30b3\u30f3\u306b\u306f\u3001\u30a2\u30ca\u30ed\u30b0-DV\u30b3\u30f3\u30d0\u30fc\u30bf\u3067\u63a5\u7d9a\u3057\u307e\u3059\u3002<\/p>\n

<\/p>\n

1. \u30d5\u30ec\u30fc\u30e0\u5dee\u5206<\/h2>\n

\u307e\u305a\u306f\u3001\u30ab\u30e1\u30e9\u306e\u524d\u3067\u5bfe\u8c61\u7269\uff08\u4eba\u306a\u3069\uff09\u304c\u52d5\u3044\u305f\u5834\u5408\u306b\u3001\u305d\u306e\u5909\u5316\u91cf\u3092\u8a08\u7b97\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002
\n\u3053\u308c\u3092\u753b\u50cf\u51e6\u7406\u306e\u7528\u8a9e\u3067\u300c\u30d5\u30ec\u30fc\u30e0\u5dee\u5206\u300d\u3068\u8a00\u3044\u307e\u3059\u3002\u524d\u306e\u30b5\u30f3\u30d7\u30eb\u3088\u308a\u306f\u304b\u306a\u308a\u30b3\u30fc\u30c9\u304c\u9577\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u524d\u306e\u5b9f\u7fd2\u306e\u5fdc\u7528\u3067\u3059\u3002<\/p>\n

\r\n\/\/This code has been arranged by Yasushi Noguchi. Last updated on June 21, 2008.\r\n\/**\r\n * Frame Differencing\r\n * by Golan Levin.\r\n *\r\n * Quantify the amount of movement in the video frame using frame-differencing.\r\n *\/ \r\n\r\nimport processing.video.*;\r\n\r\nint numPixels;    \/\/\u753b\u50cf\u306e\u30d4\u30af\u30bb\u30eb\u306e\u7dcf\u6570\r\nint[] previousFrame;    \/\/\u4e00\u3064\u524d\u306e\u30d5\u30ec\u30fc\u30e0\r\nint noiseFilter = 50;    \/\/\u30ce\u30a4\u30ba\u3092\u62fe\u308f\u306a\u3044\u305f\u3081\u306e\u30d5\u30a3\u30eb\u30bf\uff08\u5024\u3092\u5897\u3084\u3059\u3068\u30d5\u30a3\u30eb\u30bf\u304c\u5f37\u304f\u304b\u304b\u308b\uff09\r\nCapture video;    \/\/\u30ad\u30e3\u30d7\u30c1\u30e3\u6620\u50cf\u7528\u306e\u5909\u6570\r\n\r\nvoid setup() {\r\n  size(640, 480);\r\n\r\n  video = new Capture(this, width, height, 24);\r\n  \/\/\u30ad\u30e3\u30d7\u30c1\u30e3\u30fc\u3059\u308b\u30d3\u30c7\u30aa\u753b\u50cf\u306e\u7dcf\u30d4\u30af\u30bb\u30eb\u6570\r\n  numPixels = video.width * video.height;\r\n  \/\/\u73fe\u5728\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u753b\u50cf\u3068\u6bd4\u3079\u308b\u305f\u3081\u306b\u4e00\u3064\u524d\u306e\u30d5\u30ec\u30fc\u30e0\u7528\u306e\u914d\u5217\u3092\u4f5c\u308b\r\n  previousFrame = new int[numPixels];\r\n  loadPixels();\r\n}\r\n\r\nvoid draw() {\r\n  if (video.available()) {  \/\/\u3082\u3057\u30ad\u30e3\u30d7\u30c1\u30e3\u304c\u3067\u304d\u305f\u3089\u3001\r\n    video.read(); \/\/\u30d3\u30c7\u30aa\u30d5\u30ec\u30fc\u30e0\u306e\u8aad\u307f\u8fbc\u307f\r\n    video.loadPixels(); \/\/\u30d3\u30c7\u30aa\u306e\u30d4\u30af\u30bb\u30eb\u3092\u64cd\u4f5c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\r\n\r\n    int movementSum = 0; \/\/\u4e00\u3064\u306e\u30d5\u30ec\u30fc\u30e0\u3067\u306e\u52d5\u4f5c\u91cf\r\n    for (int i = 0; i < numPixels; i++) { \/\/\u30d5\u30ec\u30fc\u30e0\u5185\u306e\u305d\u308c\u305e\u308c\u306e\u30d4\u30af\u30bb\u30eb\u3092\u691c\u51fa\r\n      color currColor = video.pixels[i];\r\n      color prevColor = previousFrame[i];\r\n\r\n      \/\/\u73fe\u5728\u306e\u30d4\u30af\u30bb\u30eb\u306eR, G, B\u3092\u629c\u304d\u51fa\u3059\r\n      int currR = (currColor >> 16) & 0xFF;\r\n      int currG = (currColor >> 8 ) & 0xFF;\r\n      int currB = currColor & 0xFF;\r\n\r\n      \/\/\u4e00\u3064\u524d\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u8272\u3092\u629c\u304d\u51fa\u3059\r\n      int prevR = (prevColor >> 16) & 0xFF;\r\n      int prevG = (prevColor >> 8 ) & 0xFF;\r\n      int prevB = prevColor & 0xFF;\r\n\r\n      \/\/\u73fe\u5728\u306e\u30d4\u30af\u30bb\u30eb\u304b\u3089\u524d\u306e\u30d4\u30af\u30bb\u30eb\u306e\u8272\u3092\u5f15\u3044\u305f\u7d76\u5bfe\u5024\r\n      int diffR = abs(currR - prevR);\r\n      int diffG = abs(currG - prevG);\r\n      int diffB = abs(currB - prevB);\r\n\r\n      \/\/noiseFilter\u306e\u5024\u3088\u308a\u3082\u5927\u304d\u304b\u3063\u305f\u3089movementSum\u306b\u8db3\u3057\u3066\u3044\u304f\r\n      \/\/\u305d\u3057\u3066\u3001\u73fe\u5728\u306e\u8272\u306b\u66f4\u65b0\r\n      if(diffR + diffG + diffB > noiseFilter){\r\n        movementSum ++;\r\n        pixels[i] = color(currR, currG, currB);\r\n        \/\/\u6b21\u306e\u30b3\u30fc\u30c9\u306e\u65b9\u304c\u9ad8\u901f\u306b\u5b9f\u884c\u3067\u304d\u308b\u304c\u3001\u3061\u3087\u3063\u3068\u96e3\u3057\u3044\r\n        \/\/pixels[i] = 0xFF000000 | (currR << 16) | (currG << 8 ) | currB;\r\n      }\r\n      else{\r\n        \/\/\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u9ed2\r\n        pixels[i] = color(0);\r\n      }\r\n\r\n      \/\/\u73fe\u5728\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u8272\u3092\u524d\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u8272\u306b\u3059\u308b\u3002\r\n      previousFrame[i] = currColor;\r\n    }\r\n\r\n    updatePixels();    \/\/\u30d4\u30af\u30bb\u30eb\u3092\u66f4\u65b0\r\n    textSize(12);  \/\/\u30c6\u30ad\u30b9\u30c8\u306e\u30b5\u30a4\u30ba\r\n    text(movementSum, 30,30);  \/\/\u5909\u5316\u3057\u305f\u30d4\u30af\u30bb\u30eb\u306e\u7dcf\u6570\u3092\u30d7\u30ea\u30f3\u30c8\u3092\u753b\u9762\u8868\u793a\r\n  }\r\n}<\/pre>\n
\"processingcorepappletscreensnapz004.jpg\"<\/a><\/p>\n
movementSum\u306b\u52d5\u3044\u305f\u30d4\u30af\u30bb\u30eb\u306e\u7dcf\u6570\u304c\u4ee3\u5165\u3055\u308c\u307e\u3059\u3002
\n\u3053\u306e\u5834\u5408\u306f640 x 480\u306e\u753b\u9762\u306a\u306e\u3067\u3001\u30d5\u30ec\u30fc\u30e0\u3054\u3068\u306e\u30d4\u30af\u30bb\u30eb\u306f307200\u30d4\u30af\u30bb\u30eb\u3068\u306a\u308a\u307e\u3059\u3002
\n\u3067\u3059\u304b\u3089\u3001\u52d5\u4f5c\u91cf\u306f0 ~ 307200\u306e\u5024\u3092\u53d6\u308a\u307e\u3059\u3002
\n\u3053\u308c\u306f\u5358\u7d14\u306bint\u578b\u306e\u5909\u6570\u306a\u306e\u3067\u3001\u5c11\u3057\u52d5\u3044\u305f\u3001\u304b\u306a\u308a\u52d5\u3044\u305f\u3001\u6fc0\u3057\u304f\u52d5\u3044\u305f\u306a\u3069\u3068\u3044\u3046\u52d5\u4f5c\u91cf\u3092\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u306d\u3002<\/p>\n
2. \u80cc\u666f\u753b\u50cf\u306e\u9ed2\u629c\u304d<\/h2>\n
\u6b21\u306f\u3001\u30d5\u30ec\u30fc\u30e0\u5dee\u5206\u306e\u5fdc\u7528\u3067\u3001\u300c\u80cc\u666f\u753b\u50cf\u306e\u9ed2\u629c\u304d\u300d\u3067\u3059\u3002<\/p>\n
\r\n\/\/This code has been arranged by Yasushi Noguchi. Last updated on June 21, 2008.\r\n\/**\r\n * Background Subtraction\r\n * by Golan Levin.\r\n *\r\n * Detect the presence of people and objects in the frame using a simple\r\n * background-subtraction technique. To initialize the background, press a key.\r\n *\/\r\n\r\nimport processing.video.*;\r\n\r\nint numPixels;    \/\/\u753b\u50cf\u306e\u30d4\u30af\u30bb\u30eb\u306e\u7dcf\u6570\r\nint[] backgroundPixels;    \/\/\u80cc\u666f\u306e\u30d4\u30af\u30bb\u30eb\r\nint noiseFilter = 50;    \/\/\u30ce\u30a4\u30ba\u3092\u62fe\u308f\u306a\u3044\u305f\u3081\u306e\u30d5\u30a3\u30eb\u30bf\uff08\u5024\u3092\u5897\u3084\u3059\u3068\u30d5\u30a3\u30eb\u30bf\u304c\u5f37\u304f\u304b\u304b\u308b\uff09\r\nCapture video;    \/\/\u30ad\u30e3\u30d7\u30c1\u30e3\u6620\u50cf\u7528\u306e\u5909\u6570\r\n\r\nvoid setup() {\r\n  size(640, 480); \r\n\r\n  video = new Capture(this, width, height, 24);\r\n  \/\/\u30ad\u30e3\u30d7\u30c1\u30e3\u30fc\u3059\u308b\u30d3\u30c7\u30aa\u753b\u50cf\u306e\u7dcf\u30d4\u30af\u30bb\u30eb\u6570\r\n  numPixels = video.width * video.height;\r\n  \/\/\u73fe\u5728\u306e\u30ad\u30e3\u30d7\u30c1\u30e3\u753b\u50cf\u3068\u6bd4\u3079\u308b\u305f\u3081\u306b\u80cc\u666f\u753b\u50cf\u7528\u306e\u914d\u5217\u3092\u4f5c\u308b\r\n  backgroundPixels = new int[numPixels];\r\n  loadPixels();\r\n}\r\n\r\nvoid draw() {\r\n  if (video.available()) {  \/\/\u3082\u3057\u30ad\u30e3\u30d7\u30c1\u30e3\u304c\u3067\u304d\u305f\u3089\u3001\r\n    video.read(); \/\/\u30d3\u30c7\u30aa\u30d5\u30ec\u30fc\u30e0\u306e\u8aad\u307f\u8fbc\u307f\r\n    video.loadPixels(); \/\/\u30d3\u30c7\u30aa\u306e\u30d4\u30af\u30bb\u30eb\u3092\u64cd\u4f5c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\r\n\r\n    \/\/\u73fe\u5728\u306e\u30d5\u30ec\u30fc\u30e0\u3068\u80cc\u666f\u753b\u50cf\u306e\u5dee\r\n    int presenceSum = 0;\r\n    for (int i = 0; i < numPixels; i++) { \/\/\u30d5\u30ec\u30fc\u30e0\u5185\u306e\u305d\u308c\u305e\u308c\u306e\u30d4\u30af\u30bb\u30eb\u3092\u691c\u51fa\r\n\r\n      \/\/\u73fe\u5728\u306e\u30d4\u30af\u30bb\u30eb\u3068\u80cc\u666f\u306e\u30d4\u30af\u30bb\u30eb\u306e\u5024\u3092\u5909\u6570\u306b\u4ee3\u5165\r\n      color currColor = video.pixels[i];\r\n      color bkgdColor = backgroundPixels[i];\r\n\r\n      \/\/\u73fe\u5728\u306e\u30d4\u30af\u30bb\u30eb\u306eR, G, B\u3092\u629c\u304d\u51fa\u3059\r\n      int currR = (currColor >> 16) & 0xFF;\r\n      int currG = (currColor >> 8 ) & 0xFF;\r\n      int currB = currColor & 0xFF;\r\n\r\n      \/\/\u80cc\u666f\u753b\u50cf\u306eR, G, B\u3092\u629c\u304d\u51fa\u3059\r\n      int bkgdR = (bkgdColor >> 16) & 0xFF;\r\n      int bkgdG = (bkgdColor >> 8 ) & 0xFF;\r\n      int bkgdB = bkgdColor & 0xFF;\r\n\r\n      \/\/\u73fe\u5728\u306e\u30d4\u30af\u30bb\u30eb\u304b\u3089\u80cc\u666f\u753b\u50cf\u306e\u30d4\u30af\u30bb\u30eb\u306e\u8272\u3092\u5f15\u3044\u305f\u7d76\u5bfe\u5024\r\n      int diffR = abs(currR - bkgdR);\r\n      int diffG = abs(currG - bkgdG);\r\n      int diffB = abs(currB - bkgdB);\r\n\r\n      \/\/noiseFilter\u306e\u5024\u3088\u308a\u3082\u5927\u304d\u304b\u3063\u305f\u3089presenceSum\u306b\u8db3\u3057\u3066\u3044\u304f\r\n      \/\/\u305d\u3057\u3066\u3001\u73fe\u5728\u306e\u8272\u306b\u66f4\u65b0\r\n      if(diffR + diffG + diffB > noiseFilter){\r\n        presenceSum ++;\r\n        pixels[i] = color(currR, currG, currB);\r\n        \/\/\u6b21\u306e\u30b3\u30fc\u30c9\u306e\u65b9\u304c\u9ad8\u901f\u306b\u5b9f\u884c\u3067\u304d\u308b\u304c\u3001\u3061\u3087\u3063\u3068\u96e3\u3057\u3044\r\n        \/\/pixels[i] = 0xFF000000 | (currR << 16) | (currG << 8 ) | currB;\r\n      }\r\n      else{\r\n        \/\/\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u9ed2\r\n        pixels[i] = color(0);\r\n      }\r\n    }\r\n    updatePixels();    \/\/\u30d4\u30af\u30bb\u30eb\u3092\u66f4\u65b0\r\n    textSize(12);  \/\/\u30c6\u30ad\u30b9\u30c8\u306e\u30b5\u30a4\u30ba\r\n    text(presenceSum, 30,30);  \/\/\u5909\u5316\u3057\u305f\u30d4\u30af\u30bb\u30eb\u306e\u7dcf\u6570\u3092\u30d7\u30ea\u30f3\u30c8\u3092\u753b\u9762\u8868\u793a\r\n  }\r\n}\r\n\r\n\/\/\u30de\u30a6\u30b9\u3092\u62bc\u3057\u305f\u3068\u304d\u306b\u3001\u73fe\u5728\u306e\u30d5\u30ec\u30fc\u30e0\u306e\u753b\u50cf\u3092backgroudPixels\u306b\u30b3\u30d4\u30fc\u3059\u308b\r\nvoid mousePressed() {\r\n  video.loadPixels();\r\n  arraycopy(video.pixels, backgroundPixels);\r\n}<\/pre>\n
\"processingcorepappletscreensnapz005.jpg\"<\/a><\/p>\n
\u753b\u9762\u4e0a\u306e\u30de\u30a6\u30b9\u30af\u30ea\u30c3\u30af\u306b\u3088\u3063\u3066\u3001backgroundPixels\u306b\u305d\u306e\u6642\u70b9\u306e\u753b\u50cf\u304c\u4fdd\u5b58\u3055\u308c\u3001\u305d\u306e\u4fdd\u5b58\u3055\u308c\u305f\u753b\u50cf\u3068\u73fe\u5728\u306e\u6620\u50cf\u3092\u6bd4\u8f03\u3057\u3066\u5909\u5316\u3057\u305f\u90e8\u5206\u3060\u3051\u306b\u6620\u50cf\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u53c2\u8003\uff1a\u4eba\u306e\u52d5\u304d\u306b\u53cd\u5fdc\u3059\u308b\u5186<\/h2>\n
\"\"<\/p>\n
\u3053\u306e\u30b5\u30f3\u30d7\u30eb\u306f\u3001\u4eba\u304c\u52d5\u3044\u305f\u3068\u3053\u308d\u306b\u3060\u3093\u3060\u3093\u62e1\u5927\u3057\u306a\u304c\u3089\u6d88\u3048\u3066\u3044\u304f\u5186\u304c\u751f\u6210\u3055\u308c\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002
\n\u57fa\u672c\u7684\u306b\u3001\u4eca\u56de\u306e\u5b9f\u7fd2\u306e\u7bc4\u56f2\u5185\u306e\u77e5\u8b58\u3067\u4f5c\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
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