{"action":"created","issue":{"url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/issues/245","repository_url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap","labels_url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/issues/245/labels{/name}","comments_url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/issues/245/comments","events_url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/issues/245/events","html_url":"https://github.com/OpenDroneMap/OpenDroneMap/issues/245","id":132577868,"number":245,"title":"How Can I get an orthophoto if I don't have a geographic reference system","user":{"login":"mrosen","id":742450,"avatar_url":"https://avatars.githubusercontent.com/u/742450?v=3","gravatar_id":"","url":"https://api.github.com/users/mrosen","html_url":"https://github.com/mrosen","followers_url":"https://api.github.com/users/mrosen/followers","following_url":"https://api.github.com/users/mrosen/following{/other_user}","gists_url":"https://api.github.com/users/mrosen/gists{/gist_id}","starred_url":"https://api.github.com/users/mrosen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mrosen/subscriptions","organizations_url":"https://api.github.com/users/mrosen/orgs","repos_url":"https://api.github.com/users/mrosen/repos","events_url":"https://api.github.com/users/mrosen/events{/privacy}","received_events_url":"https://api.github.com/users/mrosen/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/labels/enhancement","name":"enhancement","color":"84b6eb"},{"url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/labels/help%20wanted","name":"help wanted","color":"159818"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2016-02-10T00:35:45Z","updated_at":"2016-02-10T20:57:57Z","closed_at":null,"body":"Suppose I have have a collection of overlapping drone images but no GPS ephemeris and no GCPs.  I think I can still get through the meshing and texturing steps (right?).  Is there some way I can get odm_orthophoto to produce a rectified image?  Seems like there should be some value of resolution which would allow this."},"comment":{"url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/issues/comments/182579644","html_url":"https://github.com/OpenDroneMap/OpenDroneMap/issues/245#issuecomment-182579644","issue_url":"https://api.github.com/repos/OpenDroneMap/OpenDroneMap/issues/245","id":182579644,"user":{"login":"mrosen","id":742450,"avatar_url":"https://avatars.githubusercontent.com/u/742450?v=3","gravatar_id":"","url":"https://api.github.com/users/mrosen","html_url":"https://github.com/mrosen","followers_url":"https://api.github.com/users/mrosen/followers","following_url":"https://api.github.com/users/mrosen/following{/other_user}","gists_url":"https://api.github.com/users/mrosen/gists{/gist_id}","starred_url":"https://api.github.com/users/mrosen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mrosen/subscriptions","organizations_url":"https://api.github.com/users/mrosen/orgs","repos_url":"https://api.github.com/users/mrosen/repos","events_url":"https://api.github.com/users/mrosen/events{/privacy}","received_events_url":"https://api.github.com/users/mrosen/received_events","type":"User","site_admin":false},"created_at":"2016-02-10T20:57:57Z","updated_at":"2016-02-10T20:57:57Z","body":"I'm not following Benjamin's explanation.  The point cloud already has a reference system.  Why can't we use that?  When we do a 3D rendering of the point cloud, we can position the camera in coordinates from the cloud's reference system.  As we move the z value out to infinity (and keeping x and y in the middle of their domains), I think the resulting image becomes the orthorectified image we seek.  Right?  We can do that without a UI.  What am I missing?"}}