Iphone freehand crop sdk [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarif开发者_运维知识库ying this question so that it can be reopened, visit the help center. Closed 11 years ago.

I would like to take an image of a person using camera and then edit the image in an app. The app should have a feature to crop(preferably freehand crop) the person only leaving the background so that I am able to use the person on different backgrounds. I am not sure how to do the cropping part.. kindly suggest a method to do this in ios?