US 9,426,484 B2 · Video encoding method and apparatus and video decoding method and apparatus, based on transformation index information

Abstract

A method and apparatus for decoding video and a method and apparatus for encoding video are provided. The method for decoding video includes: receiving and parsing a bitstream of encoded video; extracting, from the bitstream, encoded image data of a current picture assigned to a maximum coding unit of the current picture, information regarding a coded depth of the maximum coding unit, information regarding an encoding mode, and coding unit pattern information indicating whether texture information of the maximum coding units has been encoded; and decoding the encoded image data for the maximum coding unit, based on the information regarding the coded depth of the maximum coding unit, the information regarding the encoding mode, and the coding unit pattern information.

Claims4

Dependent claims

A video decoding apparatus comprising:

an extractor which extracts from a bitstream transformation index information indicating whether a transformation unit of a current level included in a current coding unit is split;
a decoder which splits the transformation unit of the current level into transformation units of a lower level when the transformation index information indicates a split of the transformation unit of the current level,
wherein the extractor further extracts pattern information for the transformation unit of the current level when the transformation index information indicates a non-split of the transformation unit of the current level,
wherein the pattern information indicates whether the transformation unit of the current level contains one or more transform coefficients not equal to 0.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

14/719,629Filed 22 May 2015 · continuation

Priority

KR 10-2009-007533714 Aug 2009

Published

US 2015/0256829 A110 Sep 2015

Granted

23 Aug 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

H04N 19/44
Methods or arrangements for coding, decoding, compressing or decompressing digital video signals: decoders specially adapted therefor, e.g. video…
H04N 19/119
Characterised by the element, parameter or selection affected or controlled by the adaptive coding: adaptive subdivision aspects, e.g. subdivision…
H04N 19/122
Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or…:…
H04N 19/136
Characterised by the element, parameter or criterion affecting or controlling the adaptive coding: incoming video signal characteristics or properties

Family

Application12/856,272Parent of this continuation · filed 13 Aug 2010

US 2015/0256829 A1Pre-grant publication · published 10 Sep 2015

US 9,148,665 B2Parent of this continuation

US 2011/0038422 A1Published application

US 9,426,484 B2This patent

From the US filing history. Foreign family members aren’t listed.

Video encoding method and apparatus and video decoding method and apparatus, based on transformation index information

Life of this patent

Video encoding method and apparatus and video decoding method and apparatus, based on transformation index information

Life of this patent

Abstract

Claims4