{"action":"closed","issue":{"url":"https://api.github.com/repos/tum-vision/lsd_slam/issues/122","labels_url":"https://api.github.com/repos/tum-vision/lsd_slam/issues/122/labels{/name}","comments_url":"https://api.github.com/repos/tum-vision/lsd_slam/issues/122/comments","events_url":"https://api.github.com/repos/tum-vision/lsd_slam/issues/122/events","html_url":"https://github.com/tum-vision/lsd_slam/issues/122","id":89877949,"number":122,"title":"Room Example not working / ardrone camera","user":{"login":"Tgaaly","id":2816214,"avatar_url":"https://avatars.githubusercontent.com/u/2816214?v=3","gravatar_id":"","url":"https://api.github.com/users/Tgaaly","html_url":"https://github.com/Tgaaly","followers_url":"https://api.github.com/users/Tgaaly/followers","following_url":"https://api.github.com/users/Tgaaly/following{/other_user}","gists_url":"https://api.github.com/users/Tgaaly/gists{/gist_id}","starred_url":"https://api.github.com/users/Tgaaly/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Tgaaly/subscriptions","organizations_url":"https://api.github.com/users/Tgaaly/orgs","repos_url":"https://api.github.com/users/Tgaaly/repos","events_url":"https://api.github.com/users/Tgaaly/events{/privacy}","received_events_url":"https://api.github.com/users/Tgaaly/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-06-21T07:36:25Z","updated_at":"2015-06-21T09:32:29Z","closed_at":"2015-06-21T09:32:29Z","body":"I downloaded the room image sequence example and followed the instructions to run lsd_slam. I believe the problem is that lsd_slam takes the camera calibration from 2 places. one in the pinhole_example_calib.cfg and the other from /camera_info. I copied the values from the /camera_info topic and put them in the .cfg file but I get the following error:\r\n\r\nMaybe the .cfg file is wrong. Has anyone been able to run this succesfully? I would be grateful for some help. \r\n\r\nI also tried this on an ar_drone camera but does not work well. I calibrated and rectified using image_proc but nothing worked. It also ran way too slow so I had to disable the debug depth display window. Has anyone been able to use it on ardrone?\r\n\r\nReading Calibration from file pinhole_example_calib.cfg ... not found!\r\n Trying /home/me/catkin_ws/src/lsd_slam/lsd_slam_core/calib/pinhole_example_calib.cfg ... found!\r\nfound ATAN camera model, building rectifier.\r\n/home/me/catkin_ws/src/lsd_slam/lsd_slam_core/calib/pinhole_example_calib.cfg\r\nInput resolution: 640 480\r\nIn: 254.326950 375.934387 267.381897 231.599091 0.000000\r\nNO RECTIFICATION\r\nOutput resolution: 640 480\r\nPrepped Warp matrices\r\nStarted optimization thread \r\nStarted  constraint search thread!\r\nStarted mapping thread!\r\nDoing Random initialization!\r\nstarted image display thread!\r\nDone Random initialization!\r\nterminate called after throwing an instance of 'Sophus::ScaleNotPositive'\r\n  what():  Sophus exception: Scale factor is not positive\r\nAborted (core dumped)\r\n"}}