{"id":368,"date":"2022-08-30T15:00:11","date_gmt":"2022-08-30T15:00:11","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/11\/06\/problem-about-opticalflow-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:00:11","modified_gmt":"2022-08-30T15:00:11","slug":"problem-about-opticalflow-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-opticalflow-collection-of-common-programming-errors\/","title":{"rendered":"problem about opticalflow-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/50b313ce48f40dacd397d23c28454fbd?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nmanu.web<br \/>\nc eclipse osx opencv opticalflow<br \/>\ni have to do a program using C Language and OpenCV Libreries for a project, I followed the guide for the installation for MACOSX on this site: OpenCV InstallationI used Mac Port for the Istallation.I use Eclipse to program, Now when i try to compile this program, i get a Build Error and i think that it depends to CalcOpticalFlowFarneback() Function.This is the code:#include #include #include #include #include int main(){C<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/43a3e2f5a681022f037622f3715d5326?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nAggieboy<br \/>\nc++ opencv assertions opticalflow<br \/>\nI have been trying to form a small optical flow example with OpenCV for a while now. Everything works except the function call calcOpticalFlowPyrLK, which prints the following failed assertion in the console window:OpenCV Error: Assertion failed (mytype == typ0 || (CV_MAT_CN(mytype) == CV_MAT_CV(type0) &amp;&amp; ((1 =0:prev_img=prev_saturation_thresh_imgnext_img=saturation_thresh_imgp1, st, err = cv2.calcOpticalFlowPyrLK(prev_img,next_img,tracks_np,**lk_params)Returns the error: is not a numpy arraySo then I try to convert the images to numpy arrays:prev_img=prev_saturation_thresh_img next_img=saturation_thresh_img Now I have a new error: data type = 17 is not supportedIn a last-ditch effort I convert the images to cvmat (from iplimage) before converting it to a numpy array, just to see what happenserror: ..\\..\\..\\OpenCV-2.4.1\\modules\\video\\src\\lkpyr<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/e49081f9c8f64cd6617efda90398a2a1?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nFroyo<br \/>\npython opencv tracking opticalflow<br \/>\nI&#8217;m trying to make an LK tracker in OpenCV 2.3.1 with python bindings. When I docalcOpticalFlowPyrLK(img1, img2,template_pt, target_pt, status, err, (win_size_lk, win_size_lk), 0, TERM_CRITERIA_EPS, (TERM_CRIT<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2013-11-06 03:19:19. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>manu.web c eclipse osx opencv opticalflow i have to do a program using C Language and OpenCV Libreries for a project, I followed the guide for the installation for MACOSX on this site: OpenCV InstallationI used Mac Port for the Istallation.I use Eclipse to program, Now when i try to compile this program, i get [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-368","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/368","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=368"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/368\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=368"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=368"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=368"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}