VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD AND VIDEO DECODING METHOD Russian patent published in 2017 - IPC H04N19/124 H04N19/157 H04N19/159 H04N19/196 H04N19/593 

FIELD: information technology.

SUBSTANCE: invention relates to video decoding. Video decoding device for decoding image blocks basing on inverse quantization of input compressed video data to perform the process of forming image data as a set of image blocks containing a quantization intervals size decoding means for decoding the quantization interval, which controls granularity of inverse quantization, herewith the quantization intervals size decoding means calculates the quantization interval size, which controls granularity of inverse quantization, by means of selective use of the quantization interval size assigned to the decoded adjacent block of image, or the quantization interval size assigned to the image block decoded directly prior to it basing on the imageprediction parameter.

EFFECT: technical result is efficient decoding of video.

2 cl, 27 dwg