VIDEO SIGNAL CONVERTING SYSTEM

摘要

A reverse filter operates for adding noise n(x,y) to an output of a deteriorated model of a blurring function H(x,y) to output an observed model g(x,y). The blurring function inputs a true picture f(x,y) to output a deteriorated picture. The reverse filter recursively optimizes the blurring function H(x,y) so that the input picture signal will be coincident with the observed picture. In this manner, the reverse filter extracts a true picture signal. A corresponding point is estimated, based on a fluency theory, on the true input picture signal freed of noise contained in it by the reverse filter (20). The motion information of a picture is expressed in the form of a function. A plurality of signal spaces is selected by an encoder for compression (30) for the input picture signal. The picture information is expressed by a function from one selected signal space to another. The motion information of the picture expressed by the function and the signal-space-based picture information expressed in the form of a function are expressed in a preset form to encode the picture signal by compression. The picture signal encoded for compression has its frame rate enhanced by a frame rate enhancing processor (40).