{"action":"created","issue":{"url":"https://api.github.com/repos/adasworks/ocamcalib-plus/issues/4","repository_url":"https://api.github.com/repos/adasworks/ocamcalib-plus","labels_url":"https://api.github.com/repos/adasworks/ocamcalib-plus/issues/4/labels{/name}","comments_url":"https://api.github.com/repos/adasworks/ocamcalib-plus/issues/4/comments","events_url":"https://api.github.com/repos/adasworks/ocamcalib-plus/issues/4/events","html_url":"https://github.com/adasworks/ocamcalib-plus/issues/4","id":172311211,"number":4,"title":"problem about the rotation matrix","user":{"login":"riyueshi","id":8179788,"avatar_url":"https://avatars.githubusercontent.com/u/8179788?v=3","gravatar_id":"","url":"https://api.github.com/users/riyueshi","html_url":"https://github.com/riyueshi","followers_url":"https://api.github.com/users/riyueshi/followers","following_url":"https://api.github.com/users/riyueshi/following{/other_user}","gists_url":"https://api.github.com/users/riyueshi/gists{/gist_id}","starred_url":"https://api.github.com/users/riyueshi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/riyueshi/subscriptions","organizations_url":"https://api.github.com/users/riyueshi/orgs","repos_url":"https://api.github.com/users/riyueshi/repos","events_url":"https://api.github.com/users/riyueshi/events{/privacy}","received_events_url":"https://api.github.com/users/riyueshi/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2016-08-21T08:36:04Z","updated_at":"2016-08-22T07:35:42Z","closed_at":null,"body":"Hi, I got some problem about the rotation matrix obtained by the ocamcalib-plus. I used the same images as input data to calibrate the camera both openCV and ocamcalib-plus. the rotation matrix they got is quite different and after I convert the rotation matrix to euler angle I find that two of the angle value have opposite sign (eg. [2.1,0.8,1.6] in openCV and [2.1,-0.8,-1.6] in ocamcalib-plus). I am curious about how this occur. Is that just a difference of the sign define?  and what kind of coordinate the ocamlib-plus use, right hand or left hand? if it is a left hand coordinate how could I convert all the element to a right hand coordinate?\r\nMiller"},"comment":{"url":"https://api.github.com/repos/adasworks/ocamcalib-plus/issues/comments/241335118","html_url":"https://github.com/adasworks/ocamcalib-plus/issues/4#issuecomment-241335118","issue_url":"https://api.github.com/repos/adasworks/ocamcalib-plus/issues/4","id":241335118,"user":{"login":"tamaskenez","id":4126943,"avatar_url":"https://avatars.githubusercontent.com/u/4126943?v=3","gravatar_id":"","url":"https://api.github.com/users/tamaskenez","html_url":"https://github.com/tamaskenez","followers_url":"https://api.github.com/users/tamaskenez/followers","following_url":"https://api.github.com/users/tamaskenez/following{/other_user}","gists_url":"https://api.github.com/users/tamaskenez/gists{/gist_id}","starred_url":"https://api.github.com/users/tamaskenez/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tamaskenez/subscriptions","organizations_url":"https://api.github.com/users/tamaskenez/orgs","repos_url":"https://api.github.com/users/tamaskenez/repos","events_url":"https://api.github.com/users/tamaskenez/events{/privacy}","received_events_url":"https://api.github.com/users/tamaskenez/received_events","type":"User","site_admin":false},"created_at":"2016-08-22T07:35:42Z","updated_at":"2016-08-22T07:35:42Z","body":"Hi,\r\nocamcalib uses this (rather strange) camera-space coordinate system:\r\n+x downwards\r\n+y right\r\n+z backwards\r\nSo it's still right handed."}}
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