METHOD AND APPARATUS FOR ENCODING INTRA-FRAME PREDICTION MODE FOR IMAGE PREDICTION UNIT AND METHOD AND DEVICE FOR DECODING INTRA-FRAME PREDICTION MODE FOR IMAGE PREDICTION UNIT Russian patent published in 2016 - IPC G06K9/46 

FIELD: radio engineering and communications.

SUBSTANCE: invention for images encoding and decoding. Method includes obtaining first intra-frame prediction mode of unit of first components of bit stream, obtaining group of possible versions of intra-frame prediction mode, including diagonal mode, applied to second component of image corresponding to unit of first component of image, obtaining information on intra-frame prediction mode of unit of second component of image from bit stream, determination of second intra-frame mode prediction unit second component from group of possible versions of intra-frame prediction based on intra-frame prediction mode information and performing intra-frame prediction over unit second component of image according to specified second intra-frame prediction mode of unit of second image component.

EFFECT: high image quality by increasing efficiency of encoding and decoding video signals in intra-frame prediction mode.

1 cl, 9 tbl, 38 dwg