METHOD FOR ENCODING A PREDICTION IMAGE, A PREDICTIVE IMAGE ENCODING DEVICE, A PREDICTIVE IMAGE ENCODING PROGRAM, A PREDICTION IMAGE DECODING METHOD, A PREDICTION IMAGE DECODING DEVICE AND A PREDICTION IMAGE DECODING PROGRAM Russian patent published in 2020 - IPC H04N19/593 H04N19/119 H04N19/46 

FIELD: data processing.

SUBSTANCE: invention relates to decoding images. Disclosed is a prediction image decoding device, comprising an input means for receiving compressed image data, which contain a residual signal generated by dividing the image into a plurality of blocks and performing encoding with prediction of the target block; and encoded prediction mode information indicating a method of generating a predicted signal of the target block; a recovery means for extracting the residual signal of the target block from the compressed image data to recover the reproduced residual signal; prediction mode decoding means for restoring encoded prediction mode information to generate a prediction mode; a predicted signal generating means for generating a predicted signal of the target block based on the prediction mode; image reconstruction means for adding a predicted signal with a reproduced residual signal to recover a pixel signal of the target block; where the prediction mode decoding device generates a list of possible prediction modes, comprising prediction mode elements from the plurality of previously reproduced units adjacent to the target unit, and decodes a flag indicating whether the list of possible prediction modes includes an element corresponding to the prediction mode.

EFFECT: high efficiency of decoding encoded mode information.

2 cl, 16 dwg