Abstract: An omnidirectional or panoramic projector comprise several image producing devices with a common virtual optical center. The images produced by devices such as LCD or film are arranged to form a composite or panoramic image such as a continuous 360 degree image when taken as a whole. The user can view the 360 degree image with little or no distortion at the boundaries of the image segments forming the composite image since the image producing devices have the same or nearly the same virtual optical center.

Abstract: Edges/corners in an image can be detected and tracked over time by first sampling the image at periodic time intervals, and then processing the samples to obtain the intensity value for each pixel within each image acquired at a particular time. For each pixel, the bidirectional intraframe correlation of its intensity with the intensities of pixels along each of several directions within the same image is computed. Also, the bidirectional interframe correlation of the intensity of each pixel in each image with the intensities of pixels along each of several directions spanning several images is established. The intraframe and interframe intensity correlations are processed to obtain spatiotemporal tangent information about isobrightness surfaces and curves which are indicative of edges and corners, respectively, and their image motions.