{"id":9090,"date":"2016-11-13T12:02:07","date_gmt":"2016-11-13T17:02:07","guid":{"rendered":"httpss:\/\/www.powenko.com\/wordpress\/?p=9090"},"modified":"2016-11-13T12:02:07","modified_gmt":"2016-11-13T17:02:07","slug":"04-%e9%82%8a%e7%b7%a3canny","status":"publish","type":"post","link":"https:\/\/www.powenko.com\/wordpress\/?p=9090","title":{"rendered":"04 \u908a\u7de3(Canny)"},"content":{"rendered":"<p><a href=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM.png\"><img loading=\"lazy\" decoding=\"async\" src=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-570x212.png\" alt=\"screen-shot-2016-11-14-at-12-58-39-am\" width=\"570\" height=\"212\" class=\"alignnone size-medium wp-image-9091\" srcset=\"https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-570x212.png 570w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-300x112.png 300w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-316x118.png 316w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-120x45.png 120w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-210x78.png 210w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-496x185.png 496w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM-140x52.png 140w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/11\/Screen-Shot-2016-11-14-at-12.58.39-AM.png 1408w\" sizes=\"(max-width: 570px) 100vw, 570px\" \/><\/a><\/p>\n<p>\u627e\u908a\u7de3(Canny)<\/p>\n<p>Canny\u908a\u7de3\u6aa2\u6e2c\uff0c\u5728\u6297\u96dc\u8a0a\u548c\u7cbe\u78ba\u5b9a\u4f4d\u9593\u6709\u4e0d\u932f\u7684\u6548\u679c\uff0cOpenCV\u63d0\u4f9bCanny()\u51fd\u5f0f\uff0c\u4f86\u9032\u884cCanny\u908a\u7de3\u6aa2\u6e2c\uff0c\u4ee5\u4e0b\u70ba\u6d41\u7a0b\uff0cOpenCV\u5df2\u5c07\u6b65\u9a5f\u5c01\u88dd\u597d\uff0c\u4f7f\u7528\u6642\u53ea\u8981\u547c\u53ebCanny()\u5373\u53ef\u3002<\/p>\n<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n#include &lt;iostream&gt;\r\n#include &lt;opencv2\/core\/core.hpp&gt; \r\n#include &lt;opencv2\/highgui\/highgui.hpp&gt;\r\n#include &lt;opencv2\/opencv.hpp&gt;\r\n\r\nusing namespace cv ;\r\nusing namespace std ;\r\n\r\nint main() {\r\n    cv::Mat src = cv::imread(&quot;\/Users\/powenko\/Desktop\/1.png&quot;);\r\n    if(src.data!=NULL){\r\n        \r\n        \r\n        GaussianBlur(src, src, Size(3,3), 0, 0);\r\n        Mat dst1, dst2;\r\n        Canny(src, dst1, 50, 150, 3);\r\n        threshold(dst1, dst2, 128, 255, THRESH_BINARY_INV);  \/\/\u53cd\u8f49\u5f71\u50cf\r\n        cv::namedWindow(&quot;Image&quot;) ;\r\n        cv::imshow(&quot;Image&quot;, src) ;\r\n        cv::imshow(&quot;Powenko.com  result 1&quot;, dst1) ;\r\n        cv::imshow(&quot;Powenko.com  result 2&quot;, dst2) ;\r\n        cv::waitKey() ;\r\n    }\r\n    return 0;\r\n}\r\n\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u627e\u908a\u7de3(Canny) Canny\u908a\u7de3\u6aa2\u6e2c\uff0c\u5728\u6297\u96dc\u8a0a\u548c\u7cbe\u78ba\u5b9a\u4f4d\u9593\u6709\u4e0d\u932f\u7684\u6548\u679c\uff0cOpenCV\u63d0\u4f9bCanny()\u51fd\u5f0f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[335],"tags":[],"class_list":["post-9090","post","type-post","status-publish","format-standard","hentry","category-ch5-findcontoursdrawcontours"],"_links":{"self":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9090"}],"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=9090"}],"version-history":[{"count":1,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9090\/revisions"}],"predecessor-version":[{"id":9092,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9090\/revisions\/9092"}],"wp:attachment":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}