Angular Disparity Map: A Scalable Perceptual-Based Representation of Binocular Disparity

摘要

The nowadays 3D displays demonstrate the depth perception by the pixel disparity between the left-eye and the right-eye images. However, in HVS, the angular disparity is responsible for the depth perception, which is the angular difference, $theta$, between the projections of the corresponding points on the retina. Therefore, users will perceive different depth sensation at different seats in a 3D movie theater. We will also perceive different depth perception at the same distance with 3D display of different screen sizes. In order to provide a textit{constant stimuli} of depth perception, the aid of angular disparity map is inevitable. The angular disparity relies on the distance between the user and the 3D display to compute the angular difference of the projections. The distance can be acquired by using off-the-shelf low cost depth camera (e.g. Kinect) or derived from the seat number in a 3D movie theater. As long as the angular disparity map is obtained, we are able to process the pixel disparity to achieve constant depth perception or other perceptual-based applications.