Simulation and restoration study on radiant degradation image under lengthwise relative motion

When the camera moves at high speed with its carrier, the target image will degrade with radiant blurring from the center to the periphery of image due to such factors as image exposure time, lengthwise relative motion between camera and target, and others. This will reduce the effective field of vision, and affect target detection, recognition and follow-up. An image degradation model has been established and the factors affecting radiant image blurring are analyzed on the basis of motion imaging relations, signal integration mechanism of photo-electronic detectors, investigation on consecutive image degradation models of radiant blurring under high speed lengthwise relative motion of camera platform, analysis of degradation of some specific images, and further analysis of the actual dispersion imaging processes. The restoration approach of radiant blurred image based on recursive algorithm is proposed. The radiant degraded image simulated by computerized method is consistent with the actual image, and the restoration algorithm is verified through the microcomputer. The experimental results show that the proposed algorithm can mitigate radiant blur of high-speed lengthwise relative movement effectively.