Constrain Propagation for Ghost Removal in High Dynamic Range Images

Creating high dynamic range images of non-static scenes is currently a challenging task. Carefully preventing strong camera shakes during shooting and performing image-registration before combining the exposures cannot ensure that the resulting hdr image is consistent. This is eventually due to the presence of moving objects in the scene that causes the so called ghosting artifacts. Different approaches have been developed so far in order to reduce the visible effects of ghosts in hdr images. Our iterative method propagates the influences of pixels that have low chances to belong to the static part of the scene through an image-guided energy minimization approach. Results produced with our technique show a significant reduction or total removal of ghosting artifacts.