Image signal restoring apparatus

Abstract

An apparatus for restoring an original image signal from a transmitted image information signal formed by dividing one picture amount of image signal composed of a plurality of picture element signals into a plurality of blocks each composed of a plurality of picture element signals and high-efficiently coding, for every block, the plurality of picture element signals constituting a respective one of the plurality of divided blocks is arranged to judge whether the picture element signals in each block are restorable or not on the basis of the inputted image information signal, to detect the presence or absence of motion in an image represented by the picture element signals of a block in which the picture element signals have been judged not to be unrestorable, to select either the picture element signals of a block belonging to the same picture as the unrestorable picture element signal block or the picture element signals of a block belonging to another picture according to a result of detection, and to output the selected picture element signals as interpolation picture element signals. The arrangement enables the apparatus to carry out an interpolation process in a manner most opposite to the state of the image to be reproduced.