US 9,769,472 B2 · Method and apparatus for Intra prediction using non-square blocks

Abstract

A method and apparatus for Intra prediction of a block based on neighboring pixels around the block are disclosed. Embodiments according to the present invention use square blocks as well as non-square blocks for Intra prediction. For a 2N×2N Luma CU (coding unit), the CU can be partitioned into 2N×N, N×2N, 2N×2N or N×N PUs. The 2N×N and N×2N PUs can be further processed by either square transforms only or both non-square and square transforms. In one embodiment, the 2N×N PU or the N×2N PU is processed as two N×N TUs (transform units) and each of the N×N TU is further split into smaller N×N TUs based on quad-tree split. In another embodiment, the 2N×N and N×2N PUs are processed as two 2N×0.5N and 0.5N×2N TUs respectively.

Claims27

Dependent claims

A method for Intra prediction of a block based on neighboring pixels around the block, the method comprising:

utilizing a processor to perform:
receiving a 2N×2N Luma block corresponding to Luma pixels of the block;
if a size of the Luma block is larger than a smallest coding unit (SCU), setting a prediction block size of the Luma block to be one of:
a square shape 2N×2N block size, a non-square shape 2N×N block size, or a non-square shape N×2N block size;
if the size of the Luma block is equal to the SCU, setting the prediction block size of the Luma block to be one of:
a square shape 2N×2N block size, a non-square shape 2N×N block size, a non-square shape N×2N block size, or a square shape N×N block size;
and
performing Intra prediction for the Luma block based on neighboring Luma pixels, wherein the Luma block is partitioned into one or more prediction units (PUs) according to partition mode.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

14/234,152Filed 26 Jul 2012 · us provisional application

Priority

17 Aug 2011

Published

US 2014/0140404 A122 May 2014

Granted

19 Sep 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04N 19/105
Selection of coding mode or of prediction mode: selection of the reference unit for prediction within a chosen coding or prediction mode, e.g.…
H04N 19/11
Selection of coding mode or of prediction mode: among a plurality of spatial predictive coding modes
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…:…

Family

Application61/524,686Us provisional application · filed 17 Aug 2011

Application61/556,526Us provisional application · filed 7 Nov 2011

Application61/564,696Us provisional application · filed 29 Nov 2011

Application61/583,830Us provisional application · filed 6 Jan 2012

Application61/613,743Us provisional application · filed 21 Mar 2012

US 2014/0140404 A1Pre-grant publication · published 22 May 2014

US 9,769,472 B2This patent

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

Method and apparatus for Intra prediction using non-square blocks

Life of this patent

Method and apparatus for Intra prediction using non-square blocks

Life of this patent

Abstract

Claims27