METHOD FOR DETECTING MOVING VECTOR AND APPARATUS THEREFOR, AND SYSTEM FOR PROCESSING IMAGE SIGNAL USING THE APPARATUS

摘要

An apparatus capable of detecting with a good accuracy a moving vector which shows the movement of a subject moving on a screen. The apparatus includes a memory section, a spatial filter section, and a sensing section. The memory section stores an inputted new image signal every predetermined time interval. The spatial filter section generates two image signals by putting a spatial frequency band limit on two image signals corresponding to the different time intervals stored in the memory section. A detecting section has at least one detecting means, and detects the moving vector by a gradient method based on the two generated image signals and a very small value to be added to the gradient, which is derived from a reference image signal of one of those two generated image signals.