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| ![enter image description here][2] -- you have earned ***Featured Contributor Badge*** ![enter image description here][1] Your exceptional post has been selected for our editorial column ***Staff Picks*** http://wolfr.am/StaffPicks and [Your... |
| ## Introduction ## Taking picture is hard for a non-professional photographer, when he tries to get all lines perfectly horizontal. If the orientation of the picture can be corrected automatically, that would be great. The sensor in camera can do... |