{"action":"opened","issue":{"url":"https://api.github.com/repos/openMVG/openMVG/issues/1302","repository_url":"https://api.github.com/repos/openMVG/openMVG","labels_url":"https://api.github.com/repos/openMVG/openMVG/issues/1302/labels{/name}","comments_url":"https://api.github.com/repos/openMVG/openMVG/issues/1302/comments","events_url":"https://api.github.com/repos/openMVG/openMVG/issues/1302/events","html_url":"https://github.com/openMVG/openMVG/issues/1302","id":319904901,"number":1302,"title":"The scene reconstructed tilted and cause system absolute error because camera center self-calibrate","user":{"login":"riyueshi","id":8179788,"avatar_url":"https://avatars0.githubusercontent.com/u/8179788?v=4","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":0,"created_at":"2018-05-03T12:44:44Z","updated_at":"2018-05-03T12:44:44Z","closed_at":null,"author_association":"NONE","body":"Hi, @pmoulon \r\n\r\nI use UAV images which containing RTK infomation to perform the 3d reconstruction, And the RTK information is use to constraintsthe image pose, and I enabled fit the camera intrinsic and distortion while SFM. All the pipeline line seems work fine but the finally result tilted a little bit which result in some system absolute error. If I fix the camera center the system absolute error disappear. And the UAV which collection the images is always towards one direction while (all head for East for example), My question is dose this one direction towards lead to the critical configure for optimize camera center. (I think it dose, so I collected another dataset which make the drone just towards the oppose direction, towards West for example, but the result shows that the system absolute error still exist if I fit the camera center ). Is there any advice for avoiding this system absolute error?\r\n\r\nThanks,\r\nMiller"}}
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