image manipulation

Often I need to crop an image with curves, especially curved corners, but everything that I have tried so far only crop in straight lines (rectangle). Is there a program available that can crop curves?

The mobile phone is becoming the most popular consumer camera. While the benefits are quite clear, the mobile scenario presents several challenges. It is not always easy to capture good photos. Image-processing tools can improve photos after capture, but there are few tools tailored to on-phone...