{"id":1427,"date":"2012-12-11T19:54:55","date_gmt":"2012-12-11T10:54:55","guid":{"rendered":"http:\/\/daily.belltail.jp\/?p=1427"},"modified":"2012-12-12T09:38:13","modified_gmt":"2012-12-12T00:38:13","slug":"cvmat%e3%81%a8cvmat_%e3%81%ae%e7%94%bb%e7%b4%a0%e3%82%a2%e3%82%af%e3%82%bb%e3%82%b9%e3%81%ae%e9%80%9f%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/daily.belltail.jp\/?p=1427","title":{"rendered":"cv::Mat\u3068cv::Mat_&lt;T&gt;\u306e\u753b\u7d20\u30a2\u30af\u30bb\u30b9\u306e\u901f\u5ea6"},"content":{"rendered":"<p>\u8fd1\u304f\u306e\u30b9\u30fc\u30d1\u30fc\u306b\u79cb\u306f\u56fd\u5185\u7523\u306e\u9bad\u304c\u58f2\u3063\u3066\u3066\u3088\u304f\u8cb7\u3063\u3066\u305f\u3093\u3067\u3059\u304c\u6700\u8fd1\u306f\u8f38\u5165\u306e\u30b5\u30fc\u30e2\u30f3\u3070\u3063\u304b\u3057\u3067\u3059\u5c11\u3057\u5bc2\u3057\u3044\u3067\u3059\uff0e<\/p>\n<p>OpenCV\u3067\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u3066\uff0c\u753b\u7d20\u5358\u4f4d\u306e\u30a2\u30af\u30bb\u30b9\u3092\u3059\u308b\u3068\u304dcv::Mat\u306eat<T>()\u306b\u3088\u308b\u65b9\u6cd5\u3068cv::Mat_<T>\u306eoperator()\u306b\u3088\u308b\u65b9\u6cd5\u3067\u3069\u3063\u3061\u304c\u901f\u3044\u304b\u306a\u3068\u601d\u3063\u3066\u8abf\u3079\u3066\u307f\u307e\u3057\u305f\uff0e<br \/>\n\u661f\u306e\u6570\u307b\u3069\u3055\u308c\u3066\u308b\u8b70\u8ad6\u306e\u3088\u3046\u306a\u3059\u308b\u3051\u3069\u3071\u3063\u3068\u898b\u305f\u7bc4\u56f2\u3067\u898b\u5f53\u305f\u3089\u306a\u304b\u3063\u305f\u306e\u3067\u3084\u3063\u3066\u307f\u305f\uff0e<br \/>\n\u53c2\u8003\u307e\u3067\u306b[http:\/\/opencv.jp\/opencv2-x-samples\/access_pixel_value:title=\u753b\u50cf\u30d4\u30af\u30bb\u30eb\u5024\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3068\u8a08\u7b97\u901f\u5ea6 | OpenCV.jp]\u3082\u3042\u308a\u307e\u3059\uff0e<\/p>\n<p><strong>\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\uff0c\u5168\u304f\u540c\u3058\u3067\u3057\u305f\uff0e<\/strong><\/p>\n<p>\u30b3\u30fc\u30c9\u306f\u3053\u3093\u306a\u304b\u3093\u3058\uff0e\u6642\u9593\u8a08\u6e2c\u306f\u30aa\u30ec\u30aa\u30ec\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u9ad8\u7cbe\u5ea6\u306a\u8a08\u6e2c\u304c\u3067\u304d\u307e\u3059\uff0e<br \/>\n<script src=\"https:\/\/gist.github.com\/4257687.js\"><\/script><\/p>\n<p>\u5b9f\u884c\u7d50\u679c\u306f\u3053\u3093\u306a\u304b\u3093\u3058\uff0e<\/p>\n<pre class=\"brush: bash; title: ; notranslate\" title=\"\">\r\n% .\/a.out\r\ncv::Mat::at&lt;T&gt;() -&gt; 9.82353ms\/\u56de\r\ncv::Mat_&lt;unsigned char&gt;::operator() -&gt; 9.69412ms\/\u56de\r\n<\/pre>\n<p>\u5927\u304d\u3055(w,h)\u306b\u3088\u3089\u305a\u540c\u3058\u304f\u3089\u3044\u306e\u6a21\u69d8\uff0e<\/p>\n<p>\u3042\u3068\u6c17\u306b\u306a\u308b\u751f\u914d\u5217\u3068\u306e\u30a2\u30af\u30bb\u30b9\u901f\u5ea6\u306e\u5dee\u3067\u3059\u304c\uff0c\u4e0a\u8ff0\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u540c\u3058\u51e6\u7406\u3092\u66f8\u3044\u3061\u3083\u3046\u3068\u6700\u9069\u5316\u3067\u5168\u90e8\u6d88\u3048\u3061\u3083\u3046\u3057\u305d\u3046\u306a\u3089\u306a\u3044\u304f\u3089\u3044\u8907\u96d1\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u9762\u5012\u3060\u3063\u305f\u306e\u3067\u65ad\u5ff5\uff0e<br \/>\n\u6700\u9069\u5316\u3057\u306a\u3051\u308c\u3070\uff0ccv::Mat\u306e\u65b9\u304c3\u5272\u304f\u3089\u3044\u9045\u3044\u304f\u3089\u3044\u3067\u3057\u305f\uff0e\u6700\u9069\u5316\u3059\u308b\u3068\u3069\u3046\u306a\u308b\u3084\u3089\uff0e<\/p>\n<p>-CPU: i7 870 (2.93GHz)<br \/>\n-OS: Ubuntu 11.10 x86<br \/>\n-gcc: 4.7.0<br \/>\n-option: -std=c++0x<br \/>\n-OpenCV: 2.4.3<\/p>\n<p><font color=\"red\">\u8ffd\u8a18:<\/font><br \/>\nIvy Bridge\u901f\u3059\u304e\u30ef\u30ed\u30bf\uff57<br \/>\n-CPU: i5 3570 (3.40 GHz)<br \/>\n-OS: Linux Mint 13<br \/>\n-gcc: 4.6.3<br \/>\n-OpenCV: 2.4.3<\/p>\n<pre class=\"brush: bash; title: ; notranslate\" title=\"\">\r\n% .\/a.out\r\ncv::Mat::at&lt;T&gt;() -&gt; 2.34902ms\/\u56de\r\ncv::Mat_&lt;unsigned char&gt;::operator() -&gt; 2.34902ms\/\u56de\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd1\u304f\u306e\u30b9\u30fc\u30d1\u30fc\u306b\u79cb\u306f\u56fd\u5185\u7523\u306e\u9bad\u304c\u58f2\u3063\u3066\u3066\u3088\u304f\u8cb7\u3063\u3066\u305f\u3093\u3067\u3059\u304c\u6700\u8fd1\u306f\u8f38\u5165\u306e\u30b5\u30fc\u30e2\u30f3\u3070\u3063\u304b\u3057\u3067\u3059\u5c11\u3057\u5bc2\u3057\u3044\u3067\u3059\uff0e OpenCV\u3067\u3061\u3087\u3063\u3068\u6c17\u306b\u306a\u3063\u3066\uff0c\u753b\u7d20\u5358\u4f4d\u306e\u30a2\u30af\u30bb\u30b9\u3092\u3059\u308b\u3068\u304dcv::Mat\u306eat()\u306b\u3088\u308b\u65b9\u6cd5\u3068cv::Ma [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[12,26,7,17],"class_list":["post-1427","post","type-post","status-publish","format-standard","hentry","category-1","tag-c","tag-cvprml","tag-linux","tag-opencv"],"_links":{"self":[{"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=\/wp\/v2\/posts\/1427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1427"}],"version-history":[{"count":0,"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=\/wp\/v2\/posts\/1427\/revisions"}],"wp:attachment":[{"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/daily.belltail.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}