Distortion-Free Wide-Angle Portraits on Camera Phones

Photographers take wide-angle shots to enjoy expanding views, group portraits that never miss anyone, or composite subjects with spectacular scenery background. In spite of the rapid proliferation of wide-angle cameras on mobile phones, a wider field-of-view (FOV) introduces a stronger perspective distortion. This paper introduces a new algorithm to undistort faces without affecting other parts of the photo.

Source: people.csail.mit.edu