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Image data coding method

An encoding method and image data technology, applied in the field of image data encoding, can solve the problems of high time complexity and high time complexity of video encoding, and achieve the effect of reducing the number of traversals and shortening the time.

Pending Publication Date: 2022-04-12
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0003] However, the improvement of compression performance often comes at the cost of higher time complexity. To determine the division method of an image block in the audio and video encoding process of AVS3, it is necessary to traverse all the division methods and calculate the corresponding The rate distortion cost (rate distortion cost, RD cost), the optimal division method of the image block can only be determined after comparing each rate distortion cost, resulting in high time complexity of AVS3 video coding

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Embodiment Construction

[0022] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

[0024] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In addition...

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Abstract

The invention provides an image data coding method. The image data coding method comprises the following steps: acquiring each coding unit of to-be-coded image data; performing frequency domain conversion on each coding unit to obtain a coding matrix of each coding unit; determining texture features of each coding unit according to the coding matrix; determining a candidate division mode of each coding unit according to the texture features; for each coding unit, traversing the candidate division modes corresponding to the coding units in sequence, and determining the division mode corresponding to each coding unit; according to the image data coding method provided by the invention, the texture features of the coding units can be determined through the coding matrixes corresponding to the coding units, and the coding result is obtained. The division mode of the coding units is limited according to the texture features of the coding units, so that the number of traversal times of the division mode is reduced, and the image data coding time is shortened.

Description

technical field [0001] The invention belongs to the field of multimedia, and in particular relates to an image data coding method. Background technique [0002] At present, the mainstream video coding protocol standards in the world include H.264, H.265 / HEVC, and H.266 / VVC. The mainstream audio and video coding protocol standards in my country include AV1, AVS2, and AVS3. AVS3 is a new generation of audio and video coding protocol standards being formulated in my country. The new generation of audio and video coding standards has greatly improved video compression performance. [0003] However, the improvement of compression performance often comes at the cost of higher time complexity. To determine the division method of an image block in the audio and video encoding process of AVS3, it is necessary to traverse all the division methods and calculate the corresponding The rate distortion cost (rate distortion cost, RD cost), the optimal division method of the image block can...

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Application Information

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IPC IPC(8): H04N19/115H04N19/625H04N19/70H04N19/96
Inventor 陶曦陈磊
Owner BEIJING UNIV OF POSTS & TELECOMM
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