| dc.description.abstract | We introduce a new method to describe, in a single image, changes in  shape over time. We acquire both range and image information with a  stationary stereo camera. From the pictures taken, we display a  composite image consisting of the image data from the  surface closest to the camera at every pixel. This reveals the 3-d  relationships over time by easy-to-interpret occlusion relationships  in the composite image. We call the composite a shape-time  photograph.   Small errors in depth measurements cause artifacts in the shape-time  images. We correct most of these using a Markov network to estimate  the most probable front surface, taking into account the depth  measurements, their uncertainties, and layer continuity assumptions. | en_US |