{"id":3996,"date":"2020-06-19T18:11:06","date_gmt":"2020-06-19T09:11:06","guid":{"rendered":"https:\/\/deha.co.jp\/magazine\/?p=3996"},"modified":"2021-08-27T08:05:30","modified_gmt":"2021-08-26T23:05:30","slug":"blob-in-opencv","status":"publish","type":"post","link":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/","title":{"rendered":"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981"},"content":{"rendered":"\n<p>\u30d6\u30ed\u30d6\u3068\u306f\u584a\u3092\u610f\u5473\u3057\u3001\u4f3c\u305f\u7279\u5fb4\u3092\u6301\u3063\u305f\u753b\u50cf\u5185\u306e\u9818\u57df\u306e\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>OpenCV\u3092\u5229\u7528\u3059\u308c\u3070\u3053\u306e\u30d6\u30ed\u30d6\u3092\u7c21\u5358\u306b\u691c\u77e5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u305d\u3093\u306a\u30d6\u30ed\u30d6\u306e\u691c\u77e5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5177\u4f53\u7684\u306b\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul><li><strong>Open CV\u306e\u6d3b\u7528\u65b9\u6cd5\u304c\u77e5\u308a\u305f\u3044\u65b9<\/strong><\/li><li><strong>\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u65b9\u6cd5\u3092\u77e5\u308a\u305f\u3044\u65b9<\/strong><\/li><\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306b\u5f53\u3066\u306f\u307e\u308b\u65b9\u306b\u304a\u3059\u3059\u3081\u306e\u8a18\u4e8b\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u8aad\u3081\u3070\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u65b9\u6cd5\u304c\u5206\u304b\u308a\u307e\u3059\u3088\u3002<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">\u30d6\u30ed\u30d6\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>\u30d6\u30ed\u30d6\u3068\u306f\u584a\u306e\u3053\u3068\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u767d\u3044\u7d19\u306b\u9ed2\u58a8\u3092\u6ea2\u3057\u3066\u6b8b\u3063\u305f\u584a\u3054\u3068\u306b\uff11\u3064\u30d6\u30ed\u30d6\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Open CV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u5229\u7528\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u30d6\u30ed\u30d6\u691c\u77e5\u3092\u5229\u7528\u3057\u3066\u753b\u50cf\u306b\u3042\u308b\u30d6\u30ed\u30d6\u3092\u898b\u3064\u3051\u3001\u30ab\u30a6\u30f3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>C++ \u8a00\u8a9e\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u624b\u9806:<\/p>\n\n\n\n<p><em>using namespace cv;<\/em><\/p>\n\n\n\n<p><em>\/\/ Read image<\/em><\/p>\n\n\n\n<p><em>Mat im = imread( \u201cblob.jpg\u201d, IMREAD_GRAYSCALE );<\/em><\/p>\n\n\n\n<p>\/\/ Set up the detector with default parameters.<\/p>\n\n\n\n<p>SimpleBlobDetector detector;<\/p>\n\n\n\n<p>\/\/ Detect blobs.<\/p>\n\n\n\n<p>std::vector&lt;KeyPoint&gt; keypoints;<\/p>\n\n\n\n<p>detector.detect( im, keypoints);<\/p>\n\n\n\n<p>\/\/ Draw detected blobs as red circles.<\/p>\n\n\n\n<p>\/\/ DrawMatchesFlags::DRAW_RICH_KEYPOINTS flag ensures the size of the circle corresponds to the size of blob<\/p>\n\n\n\n<p>Mat im_with_keypoints;<\/p>\n\n\n\n<p>drawKeypoints( im, keypoints, im_with_keypoints, Scalar(0,0,255), DrawMatchesFlags::DRAW_RICH_KEYPOINTS );<\/p>\n\n\n\n<p>\/\/ Show blobs<\/p>\n\n\n\n<p>imshow(\u201ckeypoints\u201d, im_with_keypoints );<\/p>\n\n\n\n<p>waitKey(0);<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8272\u5f69\u3001\u5f62\u3001\u30b5\u30a4\u30ba\u3067\u30d6\u30ed\u30d6\u3092\u691c\u77e5\u3059\u308b<\/h2>\n\n\n\n<p>SimpleBlobDetector\u306e\u30d1\u30e9\u30e1\u30bf\u30fc\u3092\u8a2d\u5b9a\u3059\u308c\u3070\u3001\u7d5e\u308a\u8fbc\u307f\u305f\u3044\u30d6\u30ed\u30d6\u3092\u691c\u77e5\u3059\u308b\u4e8b\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SimpleBlobDetector\u306e\u30d1\u30e9\u30e1\u30bf\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>SimpleBlobDetector::Params params;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u95be\u5024\u3067\u30d5\u30a3\u30eb\u30bf\u30fc<\/h3>\n\n\n\n<p><em>\/\/ <\/em>\u95be\u5024\u306e<em> min, max<\/em><em>\u5024\u3092\u5b9a\u3081\u308b<\/em><em>&nbsp;<\/em><\/p>\n\n\n\n<p><em>params.minThreshold = 10;<\/em><\/p>\n\n\n\n<p><em>params.maxThreshold = 200;<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b5\u30a4\u30ba\u3067\u30d5\u30a3\u30eb\u30bf\u30fc<\/h3>\n\n\n\n<p><em>params.filterByArea = true;<\/em><\/p>\n\n\n\n<p><em>params.minArea = 1500;<\/em><\/p>\n\n\n\n<p><em>params.maxArea = 5000;<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5186\u5f62\u5ea6(circularity)\u3067\u30d5\u30a3\u30eb\u30bf\u30fc<\/h3>\n\n\n\n<p><em>params.filterByCircularity = true;<\/em><\/p>\n\n\n\n<p><em>params.minCircularity = 0.1;<\/em><\/p>\n\n\n\n<p>\u5186\u5f62\u5ea6(circularity)\u306e\u6570\u5f0f\uff1a<strong>\u5186\u5f62\u5ea6\u3000<\/strong><strong>= <\/strong><strong>4<\/strong><strong>\u03c0<\/strong><strong>S \/ L^2<\/strong><\/p>\n\n\n\n<p>S\uff1a\u9762\u7a4d\uff08\u753b\u50cf\u6570\uff09<br>L\uff1a\u5468\u56f2\u9577<br>0 &lt; circulary &lt; 1.<br>\u5186\u5f62\u306e\u8fd1\u3044\u5f62\u3067\u3042\u308c\u3070\u3042\u308b\u307b\u3069\u5faa\u74b0\u304c\uff11\u306b\u8fd1\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u51f8\u9762(convexity)\u3067\u30d5\u30a3\u30eb\u30bf\u30fc<\/h3>\n\n\n\n<p><em>params.filterByConvexity = true;<\/em><\/p>\n\n\n\n<p><em>params.minConvexity = 0.87;<\/em><\/p>\n\n\n\n<p>\u51f8\u9762 (convexity)\u306e\u6570\u5f0f\uff1a(\u30d6\u30ed\u30d6\u306e\u9762\u7a4d) \/ (\u51f8\u9762\u306e\u9762\u7a4d)<\/p>\n\n\n\n<p>0 &lt; convexity &lt; 1.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob2-1.png\" alt=\"\" class=\"wp-image-4000\" width=\"344\" height=\"167\" srcset=\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob2-1.png 688w, https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob2-1-300x146.png 300w, https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob2-1-585x284.png 585w\" sizes=\"(max-width: 344px) 100vw, 344px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Inertia Ratio\u3067\u30d5\u30a3\u30eb\u30bf\u30fc<\/h3>\n\n\n\n<p>params.filterByInertia = True<\/p>\n\n\n\n<p>params.minInertiaRatio = 0.1<\/p>\n\n\n\n<p>Inertia Ratio\u306f\u5f62\u614b\u306e\u4f38\u3073\u7387\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5186\u5f62\u306eInertia Ratio = 1<br>\u6955\u5186\u5f62\u306eInertia Ratio 0&lt; Inertia Ratio&lt; 1&nbsp;<br>\u76f4\u7dda\u306eInertia Ratio = 0<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob1.png\" alt=\"\" class=\"wp-image-4001\" width=\"323\" height=\"168\" srcset=\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob1.png 646w, https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob1-300x156.png 300w, https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob1-585x304.png 585w\" sizes=\"(max-width: 323px) 100vw, 323px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u3044\u304b\u304c\u3067\u3057\u305f\u304b\u3002\u672c\u65e5\u306fOpenCV\u3092\u5229\u7528\u3057\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u30d6\u30ed\u30d6\u691c\u77e5\u3067\u500b\u6570\u306e\u30ab\u30a6\u30f3\u30c8\u3084\u4f4d\u7f6e\u3092\u691c\u77e5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u306d\u3002<\/p>\n\n\n\n<p><strong>deha\u3067\u306f\u3001\uff15\u5e74\u307b\u3069\u524d\u304b\u3089\u3001\u30d9\u30c8\u30ca\u30e0\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p>\u672c\u65e5\u7d39\u4ecb\u3057\u305fOpenCV\u306b\u95a2\u3057\u3066\u8a73\u3057\u304f\u805e\u304d\u305f\u3044\u65b9\u3084\u3001\u30d9\u30c8\u30ca\u30e0\u3067\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u3092\u884c\u3046\u969b\u306e\u8cbb\u7528\u304c\u77e5\u308a\u305f\u3044\u65b9\u306a\u3069\u306f\u305c\u3072\u3054\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><a href=\"https:\/\/deha.co.jp\/contact\" target=\"_blank\" rel=\"noreferrer noopener\">\u304a\u554f\u3044\u5408\u308f\u305b\u306f\u3053\u3061\u3089\u304b\u3089<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30d6\u30ed\u30d6\u3068\u306f\u584a\u3092\u610f\u5473\u3057\u3001\u4f3c\u305f\u7279\u5fb4\u3092\u6301\u3063\u305f\u753b\u50cf\u5185\u306e\u9818\u57df\u306e\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002 OpenCV\u3092\u5229\u7528\u3059\u308c\u3070\u3053\u306e\u30d6\u30ed\u30d6\u3092\u7c21\u5358\u306b\u691c\u77e5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u305d\u3093\u306a\u30d6\u30ed\u30d6\u306e\u691c\u77e5\u65b9\u6cd5\u306b\u3064\u3044\u3066\u5177\u4f53\u7684\u306b\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\u3002 Open CV\u306e\u6d3b\u7528\u65b9\u6cd5\u304c\u77e5\u308a\u305f\u3044\u65b9 \u30d6\u30ed\u30d6\u691c\u77e5\u306e\u65b9\u6cd5\u3092\u77e5\u308a\u305f\u3044\u65b9 \u3053\u308c\u3089\u306b\u5f53\u3066\u306f\u307e\u308b\u65b9\u306b\u304a\u3059\u3059\u3081\u306e\u8a18\u4e8b\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u8aad\u3081\u3070\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u65b9\u6cd5\u304c\u5206\u304b\u308a\u307e\u3059\u3088\u3002<\/p>\n","protected":false},"author":3,"featured_media":3998,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[19],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981 - DEHA Magazine<\/title>\n<meta name=\"description\" content=\"\u30d9\u30c8\u30ca\u30e0\u6280\u8853\u8005\u96c6\u56e3DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981 - DEHA Magazine\" \/>\n<meta property=\"og:description\" content=\"\u30d9\u30c8\u30ca\u30e0\u6280\u8853\u8005\u96c6\u56e3DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2\" \/>\n<meta property=\"og:url\" content=\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\" \/>\n<meta property=\"og:site_name\" content=\"DEHA Magazine\" \/>\n<meta property=\"article:published_time\" content=\"2020-06-19T09:11:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-08-26T23:05:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob.png\" \/>\n\t<meta property=\"og:image:width\" content=\"760\" \/>\n\t<meta property=\"og:image:height\" content=\"421\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Van Nguyen\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Van Nguyen\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\"},\"author\":{\"name\":\"Van Nguyen\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/#\/schema\/person\/7bbb5babdce37e3a3a196346d24bf629\"},\"headline\":\"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981\",\"datePublished\":\"2020-06-19T09:11:06+00:00\",\"dateModified\":\"2021-08-26T23:05:30+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\"},\"wordCount\":152,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/#organization\"},\"articleSection\":[\"\u30b7\u30b9\u30c6\u30e0\u958b\u767a\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\",\"url\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\",\"name\":\"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981 - DEHA Magazine\",\"isPartOf\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/#website\"},\"datePublished\":\"2020-06-19T09:11:06+00:00\",\"dateModified\":\"2021-08-26T23:05:30+00:00\",\"description\":\"\u30d9\u30c8\u30ca\u30e0\u6280\u8853\u8005\u96c6\u56e3DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2\",\"breadcrumb\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/deha.co.jp\/magazine\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/#website\",\"url\":\"https:\/\/deha.co.jp\/magazine\/\",\"name\":\"DEHA Magazine\",\"description\":\"DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2\",\"publisher\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/deha.co.jp\/magazine\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/#organization\",\"name\":\"Deha Magazine\",\"url\":\"https:\/\/deha.co.jp\/magazine\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2025\/06\/DEHA-Solutions-Site-icon.png\",\"contentUrl\":\"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2025\/06\/DEHA-Solutions-Site-icon.png\",\"width\":780,\"height\":780,\"caption\":\"Deha Magazine\"},\"image\":{\"@id\":\"https:\/\/deha.co.jp\/magazine\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/deha.co.jp\/magazine\/#\/schema\/person\/7bbb5babdce37e3a3a196346d24bf629\",\"name\":\"Van Nguyen\",\"url\":\"https:\/\/deha.co.jp\/magazine\/author\/vannguyen\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981 - DEHA Magazine","description":"\u30d9\u30c8\u30ca\u30e0\u6280\u8853\u8005\u96c6\u56e3DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/","og_locale":"en_US","og_type":"article","og_title":"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981 - DEHA Magazine","og_description":"\u30d9\u30c8\u30ca\u30e0\u6280\u8853\u8005\u96c6\u56e3DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2","og_url":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/","og_site_name":"DEHA Magazine","article_published_time":"2020-06-19T09:11:06+00:00","article_modified_time":"2021-08-26T23:05:30+00:00","og_image":[{"width":760,"height":421,"url":"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2020\/06\/Blob.png","type":"image\/png"}],"author":"Van Nguyen","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Van Nguyen","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#article","isPartOf":{"@id":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/"},"author":{"name":"Van Nguyen","@id":"https:\/\/deha.co.jp\/magazine\/#\/schema\/person\/7bbb5babdce37e3a3a196346d24bf629"},"headline":"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981","datePublished":"2020-06-19T09:11:06+00:00","dateModified":"2021-08-26T23:05:30+00:00","mainEntityOfPage":{"@id":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/"},"wordCount":152,"commentCount":0,"publisher":{"@id":"https:\/\/deha.co.jp\/magazine\/#organization"},"articleSection":["\u30b7\u30b9\u30c6\u30e0\u958b\u767a"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/","url":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/","name":"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981 - DEHA Magazine","isPartOf":{"@id":"https:\/\/deha.co.jp\/magazine\/#website"},"datePublished":"2020-06-19T09:11:06+00:00","dateModified":"2021-08-26T23:05:30+00:00","description":"\u30d9\u30c8\u30ca\u30e0\u6280\u8853\u8005\u96c6\u56e3DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2","breadcrumb":{"@id":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/deha.co.jp\/magazine\/blob-in-opencv\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/deha.co.jp\/magazine\/"},{"@type":"ListItem","position":2,"name":"OpenCV\u3092\u4f7f\u3063\u305f\u30d6\u30ed\u30d6\u691c\u77e5\u306e\u6982\u8981"}]},{"@type":"WebSite","@id":"https:\/\/deha.co.jp\/magazine\/#website","url":"https:\/\/deha.co.jp\/magazine\/","name":"DEHA Magazine","description":"DEHA\u304c\u304a\u5c4a\u3051\u3059\u308b\u30aa\u30d5\u30b7\u30e7\u30a2\u958b\u767a\u60c5\u5831\u30e1\u30c7\u30a3\u30a2","publisher":{"@id":"https:\/\/deha.co.jp\/magazine\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/deha.co.jp\/magazine\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/deha.co.jp\/magazine\/#organization","name":"Deha Magazine","url":"https:\/\/deha.co.jp\/magazine\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/deha.co.jp\/magazine\/#\/schema\/logo\/image\/","url":"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2025\/06\/DEHA-Solutions-Site-icon.png","contentUrl":"https:\/\/deha.co.jp\/magazine\/wp-content\/uploads\/2025\/06\/DEHA-Solutions-Site-icon.png","width":780,"height":780,"caption":"Deha Magazine"},"image":{"@id":"https:\/\/deha.co.jp\/magazine\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/deha.co.jp\/magazine\/#\/schema\/person\/7bbb5babdce37e3a3a196346d24bf629","name":"Van Nguyen","url":"https:\/\/deha.co.jp\/magazine\/author\/vannguyen\/"}]}},"_links":{"self":[{"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/posts\/3996"}],"collection":[{"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/comments?post=3996"}],"version-history":[{"count":4,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/posts\/3996\/revisions"}],"predecessor-version":[{"id":6333,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/posts\/3996\/revisions\/6333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/media\/3998"}],"wp:attachment":[{"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/media?parent=3996"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/categories?post=3996"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/deha.co.jp\/magazine\/wp-json\/wp\/v2\/tags?post=3996"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}