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Method of dividing code blocks in video compression

A video compression and encoding block technology, applied in the field of video processing, can solve the problem of high computational complexity of the HEVC encoder, achieve the effect of speeding up the encoding speed and improving the encoding efficiency

Active Publication Date: 2013-05-08
GUANGZHOU KUVISION DIGITAL TECH COMPANY
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for coding block division in video compression, aiming to solve the problem of high computational complexity of existing HEVC encoders

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  • Method of dividing code blocks in video compression

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0025] The present invention proposes a two-way clamping block division method, such as figure 1 As shown, the flow of the two-way clamping block division method includes the following steps:

[0026] Step S1: Read the pixel values ​​in the entire LCU, starting from the smallest CU, from bottom to top, judge whether small blocks can be merged into large blocks according to the gradient direction value, and complete the block merge search table.

[0027] Step S2: Enter the CU of each depth, and obtain the depth and position information of the combined block at the corresponding position in the search table according to the depth and position information.

[0028] Step S3: If the current CU depth is consistent with the combined block dept...

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Abstract

The invention discloses a method of dividing code blocks in video compression. The method is characterized by comprising the following steps: reading pixel values of a whole local control unit (LCU), and finishing block combination searching chart; entering each deep control unit (CU), and obtaining information of depth and locations of combined block corresponding to the location of the searching chart according to the information of the depth and the locations; conducting the judging process of a block partition method from bottom to top if the current depth is uniform with the depth of the combination block; and conducting the judging process of block partition quick algorithm from top to bottom. Under the premise of ensuing that video quality and an output code rate of a high efficiency video coding (HEVC) coder are basically not changed, coding speed is greatly quickened, and coding efficiency is improved when the method of dividing the code blocks is adopted and combined with the block partition quick algorithm brought out from two aspects.

Description

technical field [0001] The present invention relates to the field of video processing, in particular to a method for dividing coding blocks in video compression. Background technique [0002] The new generation of High Efficiency Video Coding (HEVC, High Efficiency Video Coding) is a joint video team (Joint Video Team, JVT) established by the International Organization for Standardization (ISO) and the International Telecommunication Union Telecommunication Standardization Organization (ITU-T) since 2010. A new generation of video coding standards that began to be formulated in April 2009. It adopts large-sized Largest Coding Block (LCU) division. Expand the 16×16 size macroblock in H.264 to the 64×64 size LCU block. The division of the HEVC block structure includes three parts: the division of the coding unit (CU), the division of the prediction unit (PU), and the division of the transformation unit (TU). The division of CU is based on LCU, and according to the character...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N7/32H04N19/176H04N19/50
Inventor 梁凡邱家文陈焕浜
Owner GUANGZHOU KUVISION DIGITAL TECH COMPANY
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