Rotation of prediction residual blocks in video coding with transform skipping
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for transforming skipping and residual blocks, applied in the field of video decoding
Active Publication Date: 2015-03-25
QUALCOMM INC
View PDF6 Cites 12 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0005] Spatial or temporal prediction ...
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0024] This disclosure describes techniques for coding residual data of a predicted residual block with transform skipping. Residual data for a residual block includes pixel difference values between pixels of the video block to be coded and corresponding pixels of a prediction block generated for the block to be coded. When a residual block is coded using a lossless coding mode or a lossy coding mode in transform skip modes, the transform for the residual block may be skipped. When no transform is applied to the residual block, the residual data with energy higher than average (i.e., larger pixel difference values) may not be located at the upper left corner of the residual block, which is the case Entropy decoding expected.
[0025] When a transform for a residual block is skipped, entropy coding efficiency may be improved by rotating the residual block during encoding so as to position residual data with higher energy than average at the upper left corner of the residual...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
Techniques are described for coding residual data of a prediction residual block with transform skipping. A transform may be skipped for a residual block when the residual block is coded using either a lossless coding mode or a lossy coding mode in a transform skip mode. According to the techniques, based on a transform being skipped for a residual block, a rotation unit included in a video encoder or a video decoder determines whether to rotate the residual block prior to coding residual data of the residual block. In some examples, a rotation value may be explicitly signaled between the video encoder and the video decoder. In other examples, the video encoder and the video decoder may each independently determine whether to rotate the residual block based on a type of boundary at two or more edges of the residual block.
Description
[0001] This application asserts U.S. Provisional Application Nos. 61 / 670,569, filed July 11, 2012, U.S. Provisional Application Nos. 61 / 815,148, filed April 23, 2013, and 61 / 833,781, each of which is incorporated herein by reference in its entirety. technical field [0002] This disclosure relates to video coding (ie, video encoding and video decoding) with transform skipping. Background technique [0003] Digital video capabilities can be incorporated into a wide range of devices, including digital television, digital broadcast systems, wireless broadcast systems, personal digital assistants (PDAs), laptop or desktop computers, tablet computers, e-book readers, digital Cameras, digital recording devices, digital media players, video game devices, video game consoles, cellular or satellite radiotelephones, so called "smart phones", video teleconferencing devices, video streaming devices and the like. Digital video devices implement video compression techniques such as the ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more