IMAGE ENCODING DEVICE, AN IMAGE DECODING DEVICE, AN IMAGE ENCODING METHOD, AN IMAGE DECODING METHOD AND AN IMAGE PREDICTION DEVICE Russian patent published in 2019 - IPC H04N19/593 H04N19/11 H04N19/176 

FIELD: computer equipment.

SUBSTANCE: image decoding device comprises an internal prediction module for performing an intra-frame prediction process on each of the processing units to generate a predictive image, when coding mode for coding unit is internal coding mode, wherein each of the processing units is an encoding unit or a sub-block obtained by dividing the coding unit, wherein when the internal prediction parameter indicates a vertical prediction process, and the processing unit size is less than a predetermined size, the internal prediction module sums a certain value with the pixel signal value adjacent to the processing unit upper part, and outputs summation result as forecast value of predictive image, moreover, said value is proportional to the magnitude of the change in the vertical direction of the values of the signals of the pixels adjacent to the left side of said processing unit.

EFFECT: technical result is to improve the quality of images due to the implementation of high-precision prediction.

4 cl, 17 dwg