Title:
IMAGE PREDICTION METHOD, APPARATUS, AND CODEC
Document Type and Number:
WIPO Patent Application WO/2019/128716
Kind Code:
A1
Abstract:
The present invention provides an image prediction method. Said method comprises: obtaining initial prediction motion information of a current image block, determining a first reference block from a forward reference image, and determining a second reference block from a backward reference image; and performing, by means of completely new class mirroring, search around the first reference block and the second reference block, so as to determine whether there is a pair of target reference blocks having less image block matching cost, said pair of target reference blocks having a correlation in space; and obtaining, according to the pixel value of the target reference blocks at a first precision, a pixel prediction value of the current image block, said pixel prediction value of the current image block having a code stream precision. By means of the present invention, the image block matching cost calculation is performed at a high accuracy, and an optimal reference block pair is found, reducing the complexity of inter-frame prediction of a video image in the prior art, and improving the accuracy.
Inventors:
GAO SHAN (CN)
MA XIANG (CN)
CHEN HUANBANG (CN)
YANG HAITAO (CN)
MA XIANG (CN)
CHEN HUANBANG (CN)
YANG HAITAO (CN)
Application Number:
PCT/CN2018/120681
Publication Date:
July 04, 2019
Filing Date:
December 12, 2018
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04N19/139
Domestic Patent References:
| WO2017057947A1 | 2017-04-06 |
Foreign References:
| CN1525762A | 2004-09-01 | |||
| GB2521349A | 2015-06-24 |
Download PDF:
Previous Patent: METHOD AND APPARATUS FOR DETERMINING PUPIL POSITION
Next Patent: REFRIGERATING AND FREEZING DEVICE
Next Patent: REFRIGERATING AND FREEZING DEVICE