I want to object extraction from Images. for example i want to count of human in a picture or find similar picture in great data base(like google example) or finding field of picture (Nature of Office or Home) and etc.
did you know any python library or module for do this work. If you can link me
Perhaps using simplecv?
Here is a video of a presenter at pycon who runs through a quick tutorial of how to use simplecv. About half-way through, at 9:50, she demonstrates how to detect faces in an image, which you might be able to use for your project.