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Intra-frame prediction method and device, terminal and storage medium

An intra-frame prediction and prediction value technology, applied in the field of video processing, can solve the problems of not considering the attributes and characteristics of the spherical domain, unable to completely eliminate the spatial redundancy of 360-degree video, and failing to obtain better coding performance for 360-degree video.

Active Publication Date: 2020-10-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0006] The embodiment of the present application provides an intra-frame prediction method, device, terminal and storage medium to solve the problem that the existing intra-frame prediction algorithm in video coding does not consider the specific attributes and characteristics of the spherical domain, and cannot completely eliminate the problem in 360-degree video Spatial redundancy prevents 360-degree video from achieving better encoding performance

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  • Intra-frame prediction method and device, terminal and storage medium
  • Intra-frame prediction method and device, terminal and storage medium

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Embodiment Construction

[0026] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0027] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features. , whole, step, operation, element, component and / or the presence or addition of a collection thereof.

[0028] It shou...

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Abstract

The invention is suitable for the technical field of video processing, and provides an intra-frame prediction method and device, a terminal and a storage medium, and the method comprises the steps: determining neighborhood pixel points of an image block; respectively determining a reference pixel point corresponding to each pixel point in the image block from the neighborhood pixel points, whereineach pixel point in the image block and the corresponding reference pixel point are located on the same preset arc; and for each pixel point in the image block, determining the pixel value of the reference pixel point corresponding to the pixel point as the predicted value of the pixel point. According to the scheme, the execution of intra-frame prediction can be closer to the pixel point distribution condition in a 2D plane after 360-degree video projection, the spatial redundancy in the 360-degree video is eliminated, the accuracy of intra-frame prediction is improved, and the final codingperformance of the 360-degree video is improved.

Description

technical field [0001] The present application belongs to the technical field of video processing, and in particular relates to an intra prediction method, device, terminal and storage medium. Background technique [0002] During the development of multimedia technology, since virtual reality (Virtual Reality, VR) and augmented reality (Augmented Reality, AR) technologies can provide consumers with an immersive experience, they have been gradually applied in many fields. [0003] Among them, 360-degree video is one of the important forms of AR and VR. In addition to providing a wider viewing angle, 360-degree video also provides higher resolution and frame rate, and a better visual experience. [0004] Video usually needs to be encoded to achieve data storage or transmission. In the prior art, in order to adapt the 360-degree video to the current block-based video coding standard, a projection transformation from a 3D sphere to a 2D plane is required before coding. [000...

Claims

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Application Information

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IPC IPC(8): H04N19/11H04N19/147H04N19/176
CPCH04N19/11H04N19/176H04N19/147
Inventor 张云朱林卫李娜皮金勇
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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