{"id":9194,"date":"2016-12-02T06:36:09","date_gmt":"2016-12-02T11:36:09","guid":{"rendered":"httpss:\/\/www.powenko.com\/wordpress\/?p=9194"},"modified":"2016-12-02T06:48:07","modified_gmt":"2016-12-02T11:48:07","slug":"01-sift-%e6%89%be%e5%87%ba%e7%89%b9%e5%be%b5%e9%bb%9e","status":"publish","type":"post","link":"https:\/\/www.powenko.com\/wordpress\/?p=9194","title":{"rendered":"01  sift \u627e\u51fa\u7279\u5fb5\u9ede"},"content":{"rendered":"<pre class=\"brush: php; title: ; notranslate\" title=\"\">\r\n#include &lt;stdio.h&gt;\r\n#include &lt;iostream&gt;\r\n#include &lt;opencv2\/core\/core.hpp&gt;\r\n#include &lt;opencv2\/features2d\/features2d.hpp&gt;\r\n#include &lt;opencv2\/nonfree\/features2d.hpp&gt;\r\n#include &lt;opencv2\/highgui\/highgui.hpp&gt;\r\n#include &lt;opencv2\/nonfree\/nonfree.hpp&gt;\r\n\r\nusing namespace cv;\r\n\r\nvoid readme();\r\n\r\n\/** @function main *\/\r\nint main( int argc, char** argv )\r\n{\r\n    \/\/if( argc != 3 )\r\n    \/\/{ readme(); return -1; }\r\n    \r\n    Mat img_1 = imread( &quot;\/Users\/powenko\/Desktop\/taipei_101_2.jpg&quot;, CV_LOAD_IMAGE_GRAYSCALE );\r\n    Mat img_2 = imread( &quot;\/Users\/powenko\/Desktop\/taipei_101.jpg&quot;, CV_LOAD_IMAGE_GRAYSCALE );\r\n    \r\n    if( !img_1.data || !img_2.data )\r\n    { std::cout&lt;&lt; &quot; --(!) Error reading images &quot; &lt;&lt; std::endl; return -1; }\r\n    \r\n    \/\/-- Step 1: Detect the keypoints using SURF Detector\r\n    \/\/int minHessian = 400;\r\n    \r\n     SiftFeatureDetector detector;\r\n    \r\n    \r\n    std::vector&lt;KeyPoint&gt; keypoints_1, keypoints_2;\r\n    \r\n    detector.detect( img_1, keypoints_1 );\r\n    detector.detect( img_2, keypoints_2 );\r\n    \r\n    \/\/-- Draw keypoints\r\n    Mat img_keypoints_1; Mat img_keypoints_2;\r\n    \r\n    drawKeypoints( img_1, keypoints_1, img_keypoints_1, Scalar::all(-1), DrawMatchesFlags::DEFAULT );\r\n    drawKeypoints( img_2, keypoints_2, img_keypoints_2, Scalar::all(-1), DrawMatchesFlags::DEFAULT );\r\n    \r\n    \/\/-- Show detected (drawn) keypoints\r\n    imshow(&quot;Keypoints 1&quot;, img_keypoints_1 );\r\n    imshow(&quot;Keypoints 2&quot;, img_keypoints_2 );\r\n    \r\n    waitKey(0);\r\n    \r\n    return 0;\r\n}\r\n\r\n\/** @function readme *\/\r\nvoid readme()\r\n{ std::cout &lt;&lt; &quot; Usage: .\/SURF_detector &lt;img1&gt; &lt;img2&gt;&quot; &lt;&lt; std::endl; }\r\n\r\n\r\n\r\n<\/pre>\n<p><a href=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-9195\" src=\"httpss:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM.png\" alt=\"screen-shot-2016-12-02-at-7-34-41-pm\" width=\"1015\" height=\"812\" srcset=\"https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM.png 1015w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-300x240.png 300w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-570x456.png 570w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-316x253.png 316w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-120x96.png 120w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-210x168.png 210w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-496x397.png 496w, https:\/\/www.powenko.com\/wordpress\/wp-content\/uploads\/2016\/12\/Screen-Shot-2016-12-02-at-7.34.41-PM-140x112.png 140w\" sizes=\"(max-width: 1015px) 100vw, 1015px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>#include &lt;stdio.h&gt; #include &lt;iostream&gt; #inc [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9195,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[338],"tags":[],"class_list":["post-9194","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ch06-surfsift"],"_links":{"self":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9194"}],"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=9194"}],"version-history":[{"count":3,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9194\/revisions"}],"predecessor-version":[{"id":9207,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/9194\/revisions\/9207"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/9195"}],"wp:attachment":[{"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.powenko.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}