METHOD OF IMAGE CODING/IMAGE DECODING, DEVICE OF IMAGE CODING/IMAGE DECODING Russian patent published in 2010 - IPC H04N7/32 

FIELD: information technologies.

SUBSTANCE: method of image coding, containing stage of selection of mode to forecast unit to be coded in input image, stage of internal forecasting of generation of signal of forecasted image of unit to be coded, by means of extrapolation of forecasting pixel in forecasting direction, according to the selected mode of forecasting, stage of calculation of forecasting error signal from unit to be coded and signal of forecasted image, stage of generation of coded data by means of coding of forecasting error signal and information of forecasting mode, specifying mode of forecasting, besides, extrapolation at the stage of internal forecasting uses reference pixels, which have already been coded, and number of reference pixels changes according to distance between pixel of forecasting and one of reference pixels, which is in forecasting direction from forecasting pixel.

EFFECT: improved efficiency of coding and reduced errors of video image forecasting.

14 cl, 42 dwg