IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODER, IMAGE DECODER AND APPARATUS FOR ENCODING/DECODING IMAGES Russian patent published in 2016 - IPC G06T9/00 

FIELD: information technology.

SUBSTANCE: invention relates to encoding images. Image encoding method comprises: a predicted block generation; a residual block calculation; quantized coefficients calculation by conversion and quantizing the residual block; encoded residual block calculation by inverse quantisation and inverse transformation of quantized coefficients; generating a unit coded through time; determining whether the shift processing is required to generate first flag information which indicates the determination result; shift processing on the unit coded through time when it is determined that the shift processing is required; and encoding with variable word length on quantized coefficients and the first flag information.

EFFECT: high image quality during its encoding and decoding.

13 cl, 44 dwg