Unlock instant, AI-driven research and patent intelligence for your innovation.
Fast prediction direction decision method for efficient video coding
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 high-efficiency video coding and prediction direction technology, applied in the field of video coding, can solve the problem of high coding complexity, achieve the effect of improving coding speed, reducing the number of prediction directions, and saving coding time
Inactive Publication Date: 2018-09-28
HARBIN INST OF TECH
View PDF2 Cites 2 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
[0006] The purpose of the present invention is to provide a fast prediction direction decision-making method for high-efficiency video coding to solve the problems of high coding complexity and failure to use PU between adjacent tree-shaped coding layers to predict The correlation in the direction completes the rapid prediction direction decision-making, and fails to use the relationship between the prediction direction and the corresponding Hadamard transformation cost value to complete the fast prediction direction decision-making
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
specific Embodiment approach 1
[0027] Specific implementation mode 1: This implementation mode describes the implementation process of a fast prediction direction decision-making method for high-efficiency video coding. The flow chart is as follows Figure 4 Shown; A kind of fast prediction direction decision-making method for high-efficiency video coding that the present invention proposes comprises the following steps:
[0028] Step 1. Determine whether the coding depth of the coding layer where the current PU is located in the tree coding structure is 0; if yes, construct the initial candidate prediction direction list CL 0 , then, go to step 3; otherwise, go to step 2; where, the initial list of candidate prediction directions CL 0Including Planar mode, DC mode, and prediction directions with even numbers (see figure 1 ), as shown in formula (3):
[0029] CL 0 ={0,1}∪{2,4,...,34} (3)
[0030] In the formula, 0 means Planar mode, 1 means DC mode, 2, 4, ..., 34 means 17 prediction directions with even...
specific Embodiment approach 2
[0048] Embodiment 2: This embodiment differs from Embodiment 1 in that the value of λ in step 5 is set to 1.5. This setting is to ensure that the encoding performance of the HEVC standard is not lost, and at the same time save as much encoding time as possible.
[0049] Validate the method of invention
[0050] A fast prediction direction decision-making method for high-efficiency video coding proposed in the present invention is integrated into the HM13.0 open sourcereference software developed by JCT-VC. In order to verify the effectiveness of the present invention, 17 standard video sequences recommended by JCT-VC covering 5 resolutions (Class A-Class E) were used in the test. Among them, Class A is an ultra-clear video sequence with a resolution of 2560×1600; Class B and Class E are 1080P (with a resolution of 1920×1080) and 720P (with a resolution of 1280×720) high-definition video sequences; Class D is respectively WVGA (resolution is 832×480) and WQVGA (resolution is...
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
The invention provides a fast prediction direction decision method for efficient video coding and relates to the technical field of video coding. The method aims to solve the problem that the existinghigh-efficiency video coding technology has high coding complexity, fails to utilize correlation of the PU in the prediction direction between adjacent tree coding layers to complete a fast prediction direction decision, and fails to utilize the relationship between the predication direction and the corresponding Hadamard transform cost value to complete a fast prediction direction decision. Thefast prediction direction decision method for efficient video coding in the invention utilizes the correlation between the prediction directions of the PU and the correlation of the PU in the prediction direction in the adjacent tree coding layer to construct an initial candidate prediction direction list for the PU. The relationship between the prediction direction and the corresponding Hadamardtransform cost value is used for reducing the number of prediction directions that need to be processed by RQT. Experiments have shown that the method in the present invention can significantly reducethe coding time of the HEVC standard without affecting the coding efficiency. The method in the invention is applied to the field of prediction direction decision making for high-efficiency video coding.
Description
technical field [0001] The invention relates to a fast prediction direction decision-making method for high-efficiency video coding, and relates to the technical field of video coding. Background technique [0002] The Joint Video Experts Group (JCT-VC), which is composed of the International Telecommunication Union Telecommunication Standardization Sector (ITU-T) Video Coding Experts Group (VCEG) and the International Organization for Standardization (ISO) Motion Picture Experts Group (MPEG), jointly developed a high-definition, A new generation of video coding standard for ultra-high-definition video applications - High Efficiency Video Coding (HEVC) standard. Compared with the previous-generation video coding standard—Advanced Video Coding (AVC) standard, the HEVC standard can provide higher coding efficiency. Under the condition of obtaining the same reconstructed video quality as the AVC standard, the HEVC standard can save more than 50% of the encoding bit rate, that ...
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