{"action":"created","issue":{"url":"https://api.github.com/repos/openalpr/openalpr/issues/88","labels_url":"https://api.github.com/repos/openalpr/openalpr/issues/88/labels{/name}","comments_url":"https://api.github.com/repos/openalpr/openalpr/issues/88/comments","events_url":"https://api.github.com/repos/openalpr/openalpr/issues/88/events","html_url":"https://github.com/openalpr/openalpr/issues/88","id":60676433,"number":88,"title":"Tilted Plate","user":{"login":"LordF","id":5480314,"avatar_url":"https://avatars.githubusercontent.com/u/5480314?v=3","gravatar_id":"","url":"https://api.github.com/users/LordF","html_url":"https://github.com/LordF","followers_url":"https://api.github.com/users/LordF/followers","following_url":"https://api.github.com/users/LordF/following{/other_user}","gists_url":"https://api.github.com/users/LordF/gists{/gist_id}","starred_url":"https://api.github.com/users/LordF/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LordF/subscriptions","organizations_url":"https://api.github.com/users/LordF/orgs","repos_url":"https://api.github.com/users/LordF/repos","events_url":"https://api.github.com/users/LordF/events{/privacy}","received_events_url":"https://api.github.com/users/LordF/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":6,"created_at":"2015-03-11T15:28:44Z","updated_at":"2015-03-13T13:30:24Z","closed_at":null,"body":"Hello,\r\nI've noticed that when plate region is tilted relative to the camera, the system fails completely. I think the problem might be in the character analysis phase, since the plate still has not been corrected(deskewed) and char boxes are not detected. I think maybe if tilt correction comes earlier it might help.  "},"comment":{"url":"https://api.github.com/repos/openalpr/openalpr/issues/comments/78970403","html_url":"https://github.com/openalpr/openalpr/issues/88#issuecomment-78970403","issue_url":"https://api.github.com/repos/openalpr/openalpr/issues/88","id":78970403,"user":{"login":"LordF","id":5480314,"avatar_url":"https://avatars.githubusercontent.com/u/5480314?v=3","gravatar_id":"","url":"https://api.github.com/users/LordF","html_url":"https://github.com/LordF","followers_url":"https://api.github.com/users/LordF/followers","following_url":"https://api.github.com/users/LordF/following{/other_user}","gists_url":"https://api.github.com/users/LordF/gists{/gist_id}","starred_url":"https://api.github.com/users/LordF/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/LordF/subscriptions","organizations_url":"https://api.github.com/users/LordF/orgs","repos_url":"https://api.github.com/users/LordF/repos","events_url":"https://api.github.com/users/LordF/events{/privacy}","received_events_url":"https://api.github.com/users/LordF/received_events","type":"User","site_admin":false},"created_at":"2015-03-13T13:30:24Z","updated_at":"2015-03-13T13:30:24Z","body":"I would suggest finding each detected plate rectangle skew angle and\ncorrecting before character analysis in order to improve overall detection(\nI think moments would fit in nice here). I will try to come up with some\nideas and post some code.\n\n2015-03-13 10:15 GMT-03:00 Matthew Hill <notifications@github.com>:\n\n> Yes, I'm definitely open to ideas if there's a better way of doing it.\n>\n> Right now the character analysis phase is mostly a filter that is required\n> before moving forward in the process. Given a detected region (which may or\n> may not be a license plate) it looks for a parallel row of letters (blobs)\n> that are about the same size.\n>\n> If it detects it, subsequent phases will try and find the plate edges. The\n> edge lines are used to correct the plate perspective before moving on to\n> character segmentation (cropping out each individual character) and then\n> OCR (figuring out what each character is).\n>\n> —\n> Reply to this email directly or view it on GitHub\n> <https://github.com/openalpr/openalpr/issues/88#issuecomment-78965185>.\n>\n"}}