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1. IN201927031054 - VIDEO DECODING METHOD AND APPARATUS AND VIDEO ENCODING METHOD AND APPARATUS

Office
India
Application Number 201927031054
Application Date 01.08.2019
Publication Number 201927031054
Publication Date 03.01.2020
Publication Kind A
IPC
H04N 19/105
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
103Selection of coding mode or of prediction mode
105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
Applicants SAMSUNG ELECTRONICS CO., LTD.
Inventors ALSHIN, Alexander
ALSHINA, Elena
Priority Data 62/442108 04.01.2017 US
Title
(EN) VIDEO DECODING METHOD AND APPARATUS AND VIDEO ENCODING METHOD AND APPARATUS
Abstract
(EN)
Disclosed is a video decoding method comprising: determining a displacement vector per unit time in a horizontal direction or a vertical direction of pixels of a current block including pixels adjacent to the inside of the boundary of the current block by using values for reference pixels included in a first reference block and a second reference block without using stored values related to pixels located on the outside of the boundary of the first reference block and the second reference block; and acquiring a prediction block of the current block by performing block unit motion compensation and pixel group unit motion compensation of the current block on the basis of a gradient value in a horizontal direction or a vertical direction of a first corresponding reference pixel in the first reference block corresponding to a current pixel included in a current pixel group in the current block a gradient value in a horizontal direction or a vertical direction of a second corresponding reference pixel in the second reference block corresponding to the current pixel a pixel value of the first corresponding reference pixel a pixel value of the second corresponding reference pixel and a displacement vector per unit time in a horizontal direction or a vertical direction of the current pixel wherein the pixel group can comprise at least one pixel.