{"id":9131,"date":"2016-11-27T22:58:04","date_gmt":"2016-11-28T03:58:04","guid":{"rendered":"httpss:\/\/www.powenko.com\/wordpress\/?p=9131"},"modified":"2016-11-27T23:24:34","modified_gmt":"2016-11-28T04:24:34","slug":"9131","status":"publish","type":"post","link":"https:\/\/www.powenko.com\/wordpress\/?p=9131","title":{"rendered":"\u4fb5\u8755\u3000erode"},"content":{"rendered":"<pre><pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n#include &amp;amp;lt;iostream&amp;amp;gt;\r\n#include &amp;amp;lt;opencv2\/core\/core.hpp&amp;amp;gt;\r\n#include &amp;amp;lt;opencv2\/highgui\/highgui.hpp&amp;amp;gt;\r\n#include &amp;amp;lt;opencv2\/opencv.hpp&amp;amp;gt;\r\n\r\nusing namespace cv ;\r\nusing namespace std ;\r\nMat src; Mat src_gray;\r\nint thresh = 100;\r\nint max_thresh = 255;\r\nRNG rng(12345);\r\nvoid thresh_callback(int, void* );\r\nint main( int, char** argv )\r\n{\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    src = cv::imread(&quot;\/Users\/powenko\/Desktop\/apple.png&quot;);\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    if (src.empty())\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    {\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;        cerr &amp;amp;lt;&amp;amp;lt; &quot;No image supplied ...&quot; &amp;amp;lt;&amp;amp;lt; endl;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;        return -1;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    }\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    const char* source_window = &quot;Source&quot;;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    namedWindow( source_window, WINDOW_AUTOSIZE );\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    imshow( source_window, src );\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    createTrackbar( &quot; erode thresh:&quot;, &quot;Source&quot;, &amp;amp;amp;thresh, max_thresh, thresh_callback );\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    thresh_callback( 0, 0 );\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    waitKey(0);\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    return(0);\r\n}\r\nvoid thresh_callback(int, void* )\r\n{\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    Mat canny_output;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    vector&amp;amp;lt;vector&amp;amp;lt;Point&amp;amp;gt; &amp;amp;gt; contours;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    vector&amp;amp;lt;Vec4i&amp;amp;gt; hierarchy;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    \/\/kernel\u7684\u5f62\u72c0----\u77e9\u5f62: MORPH_RECT  \u4ea4\u53c9\u5f62: MORPH_CROSS   \u692d\u5706\u5f62 : MORPH_ELLIPSE\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    Mat drawing;\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    if(thresh&amp;amp;gt;0){\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;        Mat element = getStructuringElement(MORPH_RECT,\t Size(thresh,thresh));\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;        erode(src, drawing, element);\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    }else{\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;        drawing=src;\r\n\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    }\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    namedWindow( &quot;Contours&quot;, WINDOW_AUTOSIZE );\r\n&amp;lt;%%KEEPWHITESPACE%%&amp;gt;    imshow( &quot;Contours&quot;, drawing );\r\n}\r\n\r\n<\/pre>\n<p><a href=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9132\" src=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM.png\" alt=\"screen-shot-2016-11-28-at-11-49-39-am\" width=\"1087\" height=\"551\" srcset=\"https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM.png 1087w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-300x152.png 300w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-570x289.png 570w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-316x160.png 316w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-120x61.png 120w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-210x106.png 210w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-496x251.png 496w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-28-at-11.49.39-AM-140x71.png 140w\" sizes=\"(max-width: 1087px) 100vw, 1087px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"httpsss:\/\/www.youtube.com\/embed\/6RKuN4WKLJg\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>#include &amp;amp;lt;iostream&amp;amp;gt; #include &#038;amp [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9132,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[335],"tags":[],"class_list":["post-9131","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ch5-findcontoursdrawcontours"],"_links":{"self":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9131"}],"collection":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9131"}],"version-history":[{"count":13,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9131\/revisions"}],"predecessor-version":[{"id":9154,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9131\/revisions\/9154"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/9132"}],"wp:attachment":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}