Abstract
This paper presented a novel digital refocus method that can render blur effects with less ghosting artifacts even from under-sampled light fields. The presented method generates a set of images focused on multiple depths by using the conventional synthetic aperture method with larger aperture size and then converts it to a set of ghost-suppressed images with the desired aperture size. This paper showed that this conversion can be achieved by a 3D filtering in the frequency domain and that the filter was derived based only on multi-camera settings independent of scene information. Effectiveness of the presented method was valied through experiments using both synthetically and real images.
