Unit partitioning method for video encoding and decoding
A technology of video codec and transformation unit, which is applied in the field of video codec unit division, and can solve the problems of low coding efficiency and large amount of calculation
Inactive Publication Date: 2019-03-12
盐城雪堰机械设备有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] In the traditional unit division method for video encoding and decoding, the rate-distortion cost of each division method is calculated in turn, and the coding unit CU is divided into transformation units TU according to the division method with the smallest rate-distortion cost. However, in the actual calculation process , due to the need to calculate the rate-distortion cost of each division method, the calculation amount is relatively large, resulting in low coding efficiency
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0019] Such as figure 1 As shown, an embodiment of the present invention provides a method for unit division of video codec, the method includes the following steps:
[0020] Step 1. Determine whether the layer depth of the current TU exceeds a threshold depth. When it is determined that the layer depth of the current TU exceeds the threshold depth, divide the current TU into several sub-TUs.
[0021] Step 2: Predict the residual cost of each sub-transformation unit according to the absolute value and mode of the residual transformation.
[0022] Step 3: Determine the residual cost variance of the residual cost of two adjacent sub-transformation units respectively to obtain a residual cost variance set.
[0023] Step 4: Sorting the e...
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 discloses a unit partitioning method for video encoding and decoding. The method comprises the following steps: determining whether the hierarchical depth of a current conversion unit exceeds threshold depth; when it is determined that the hierarchical depth of the current conversion unit exceeds the threshold depth, partitioning the current conversion unit into a plurality of sub-conversion units; respectively predicting a residual error price of each sub-conversion unit according to a residual error conversion absolute value and a mode; respectively determining a residual errorprice variance of the residual error price between each two adjacent sub-conversion units to obtain a residual error price variance set; sorting elements of the residual error price variance set andobtaining the residual error price variance with the minimum value, wherein the elements refer to the residual error price variance of the residual error price of each two adjacent sub-conversion units; and when the residual error price variance with the minimum value is smaller than a preset variance threshold, determining not to partition the current conversion unit any more. By adoption of themethod in the invention, the operand can be reduced and the encoding efficiency can be improved.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a unit division method for video encoding and decoding. Background technique [0002] In the traditional unit division method for video encoding and decoding, the rate-distortion cost of each division method is calculated in turn, and the coding unit CU is divided into transformation units TU according to the division method with the smallest rate-distortion cost. However, in the actual calculation process , due to the need to calculate the rate-distortion cost of each division method, the calculation amount is relatively large, resulting in low coding efficiency. Contents of the invention [0003] In order to solve the problems in the prior art, an embodiment of the present invention provides a unit division method for video coding and decoding. [0004] A method for unit division for video encoding and decoding, the method comprising: [0005] Determine whether 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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/147
CPCH04N19/147
Inventor 林路路
Owner 盐城雪堰机械设备有限公司