{"id":856,"date":"2013-05-03T15:52:40","date_gmt":"2013-05-03T07:52:40","guid":{"rendered":"http:\/\/www.shizhiyou.com\/blog\/?p=856"},"modified":"2013-05-03T15:52:59","modified_gmt":"2013-05-03T07:52:59","slug":"opencv%e4%b9%8bcvthreshold%e8%af%b4%e6%98%8e","status":"publish","type":"post","link":"http:\/\/www.youthtribe.com\/archives\/856","title":{"rendered":"opencv\u4e4bcvThreshold\u8bf4\u660e"},"content":{"rendered":"<h1 id=\"3586026\">cvThreshold<\/h1>\n<div><strong>cvThreshold\u662fopencv\u5e93\u4e2d\u7684\u4e00\u4e2a\u51fd\u6570<\/strong><\/div>\n<div><strong>\u4f5c\u7528\uff1a\u51fd\u6570 cvThreshold \u5bf9\u5355\u901a\u9053\u6570\u7ec4\u5e94\u7528\u56fa\u5b9a\u9608\u503c\u64cd\u4f5c\u3002\u8be5\u51fd\u6570\u7684\u5178\u578b\u5e94\u7528\u662f\u5bf9\u7070\u5ea6\u56fe\u50cf\u8fdb\u884c\u9608\u503c\u64cd\u4f5c\u5f97\u5230\u4e8c\u503c\u56fe\u50cf\u3002(cvCmpS \u4e5f\u53ef\u4ee5\u8fbe\u5230\u6b64\u76ee\u7684) \u6216\u8005\u662f\u53bb\u6389\u566a\u58f0\uff0c\u4f8b\u5982\u8fc7\u6ee4\u5f88\u5c0f\u6216\u5f88\u5927\u8c61\u7d20\u503c\u7684\u56fe\u50cf\u70b9\u3002\u672c\u51fd\u6570\u652f\u6301\u7684\u5bf9\u56fe\u50cf\u53d6\u9608\u503c\u7684\u65b9\u6cd5\u7531 threshold_type \u786e\u5b9a\u3002<\/strong><\/div>\n<div><strong>\u5f62\u5f0f\uff1avoid cvThreshold( const CvArr* src, CvArr* dst, double threshold, double max_value, int threshold_type );<\/strong><\/div>\n<div>src\uff1a\u539f\u59cb\u6570\u7ec4\u00a0(\u5355\u901a\u9053 , 8-bit of 32-bit \u6d6e\u70b9\u6570)\u3002dst\uff1a\u8f93\u51fa\u6570\u7ec4\uff0c\u5fc5\u987b\u4e0e src \u7684\u7c7b\u578b\u4e00\u81f4\uff0c\u6216\u8005\u4e3a 8-bit\u3002<\/div>\n<div>threshold\uff1a\u9608\u503c<\/div>\n<div>max_value\uff1a\u4f7f\u7528 CV_THRESH_BINARY \u548c CV_THRESH_BINARY_INV \u7684\u6700\u5927\u503c\u3002<\/div>\n<div>threshold_type\uff1a\u9608\u503c\u7c7b\u578b threshold_type=CV_THRESH_BINARY:<\/div>\n<div>\u5982\u679c src(x,y)&gt;threshold ,dst(x,y) = max_value; \u5426\u5219,dst\uff08x,y\uff09=0;<\/div>\n<div>threshold_type=CV_THRESH_BINARY_INV:<\/div>\n<div>\u5982\u679c src(x,y)&gt;threshold,dst(x,y) = 0; \u5426\u5219,dst(x,y) = max_value.<\/div>\n<div>threshold_typ<\/div>\n","protected":false},"excerpt":{"rendered":"<p>cvThreshold cvThreshold\u662fopencv\u5e93\u4e2d\u7684\u4e00\u4e2a\u51fd\u6570 \u4f5c\u7528\uff1a\u51fd\u6570 cvThreshold \u5bf9\u5355\u901a\u9053\u6570\u7ec4\u5e94\u7528\u56fa\u5b9a\u9608\u503c\u64cd\u4f5c\u3002\u8be5\u51fd\u6570\u7684\u5178\u578b\u5e94\u7528\u662f\u5bf9\u7070\u5ea6\u56fe\u50cf\u8fdb\u884c\u9608\u503c\u64cd\u4f5c\u5f97\u5230\u4e8c\u503c\u56fe\u50cf\u3002(cvCmpS \u4e5f\u53ef\u4ee5\u8fbe\u5230\u6b64\u76ee\u7684) \u6216\u8005\u662f\u53bb\u6389\u566a\u58f0\uff0c\u4f8b\u5982\u8fc7\u6ee4\u5f88\u5c0f\u6216\u5f88\u5927\u8c61\u7d20\u503c\u7684\u56fe\u50cf\u70b9\u3002\u672c\u51fd\u6570\u652f\u6301\u7684\u5bf9\u56fe\u50cf\u53d6\u9608\u503c\u7684\u65b9\u6cd5\u7531 threshold_type \u786e\u5b9a\u3002 \u5f62\u5f0f\uff1avoid cvThreshold( const CvArr* src, CvArr* dst, double threshold, double max_value, int threshold_type ); src\uff1a\u539f\u59cb\u6570\u7ec4\u00a0(\u5355\u901a\u9053 <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1,9],"tags":[143,139],"_links":{"self":[{"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/posts\/856"}],"collection":[{"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/comments?post=856"}],"version-history":[{"count":3,"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/posts\/856\/revisions"}],"predecessor-version":[{"id":859,"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/posts\/856\/revisions\/859"}],"wp:attachment":[{"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/media?parent=856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/categories?post=856"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.youthtribe.com\/wp-json\/wp\/v2\/tags?post=856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}