Motion blur for motion segmentation

In this paper, we develop a method for motion segmentation using blur kernels. A blur kernel represents the apparent motion undergone by a scene point in the image plane. When the relative motion between the camera and scene is not restricted to fronto-parallel translations, the shape of the blur kernels can vary across image points. For a dynamic scene, we effectively model motion blur using transformation spread functions (TSFs) which represent the relative motions. Given a set of blur kernels that are estimated at different points across an image, we develop a method to segment them according to their relative motion. We initially group the blur kernels based on their 'compatibility'. We refine this initial segmentation by jointly estimating the TSF and removing the outliers. © 2013 IEEE.