HEVC (High Efficiency Video Coding)-based coding method of layered depth video residual layer data

A technology of residual data and encoding method, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problems of small amount of residual layer data, scattered residual data, and low performance of encoding, etc. The number of bits, the effect of guaranteed quality

Active Publication Date: 2016-12-07
SHANGHAI UNIV
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Problems solved by technology

The amount of data in the LDV residual layer is small, and the distribution of residual d...

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  • HEVC (High Efficiency Video Coding)-based coding method of layered depth video residual layer data
  • HEVC (High Efficiency Video Coding)-based coding method of layered depth video residual layer data
  • HEVC (High Efficiency Video Coding)-based coding method of layered depth video residual layer data

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[0036] Preferred embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

[0037] see Image 6 , a method for encoding layered depth video residual layer data based on HEVC, the specific steps are as follows:

[0038] Step 1. Generation of residual data: In the process of generating LDV residual layer data, it is necessary to filter out small holes in the background area whose number of pixels is less than the threshold p, and at the same time, in order to properly expand the Disocclusion area, the pixel width is q for discontinuous depth values The pixels in the background boundary area are calibrated. The thresholds q and p here need to be adjusted so that the cost of encoding residual data is as small as possible, while reducing the appearance of synthetic virtual viewpoint artifacts;

[0039] Step 2. Residual layer block calibration preprocessing: the size range of CU in HEVC is between 64×64 and 8×8, in order to...

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Abstract

The invention relates to a HEVC (High Efficiency Video Coding)-based coding method of layered depth video residual layer data. The method comprises the following specific steps: S1: carrying out parameter regulation when a LDV (Layered Depth Video) is generated to filter the useless residual data of a background area, and meanwhile, properly increasing the residual data; S2: carrying out residual layer block calibration preprocessing: in the LDV, the distribution of the residual data is unfriendly to a current coding frame, and in order to keep consistent with the quadtree partitioning principle of CTU (Coding Tree Unit) in the HEVC and do not change division situations of each CU (Coding Unit) block, a grid with the size of 8*8 is adopted to carry out block calibration processing; and S3: carrying out residual layer coding: the block is divided by the quadtree principle by the HEVC, and an improved CU division principle and a method for selecting the proper size of the CU are provided since the shape of the residual data does not completely conform to the CU block of the HEVC. When the method is used for coding the LDV residual data, a coding bit number can be lowered, and meanwhile, the artifacts of synthetic virtual viewpoints can be reduced.

Description

technical field [0001] The invention relates to an HEVC-based encoding method for layered depth video residual layer data, which reduces the number of bits required for encoding residual data and minimizes the appearance of drawn virtual viewpoint artifacts. Background technique [0002] The three-dimensional television (3DTV) system utilizes the principle that people's binoculars observe the difference in the angle of the object to identify the distance of the object, and transmit the encoded 3D video to the left and right eyes of the person, so that the audience can experience the three-dimensional sense while watching the program. Currently, 3D video formats include conventional stereo video representation (Conventional stereo video, CSV), single-viewpoint video plus depth representation (Video-plus-depth, V+D), multi-viewpoint video representation (Multi-view video, MVV ) and multi-view video plus depth representation (Multi-view video plus depth, MVD). The CSV represen...

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Application Information

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IPC IPC(8): H04N19/176H04N19/61H04N19/625H04N19/40H04N19/137H04N19/119H04N19/154H04N19/14
CPCH04N19/119H04N19/137H04N19/14H04N19/154H04N19/176H04N19/40H04N19/61H04N19/625
Inventor 马然李泽福康蒙蒙
Owner SHANGHAI UNIV
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