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Image coding method and device

An image coding and coding unit technology, applied in the computer field, can solve problems such as increased computational complexity, increased video coding time, and large amount of original video data.

Active Publication Date: 2021-07-06
北京银河信通科技有限公司
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  • Application Information

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Problems solved by technology

However, the amount of data in the original video is very large, and it must be compressed and encoded before it can be transmitted in a limited channel.
In 2013, JCT-VC officially released H.265 / HEVC as a new generation of international video coding standard. Although the compression efficiency has increased by 50% compared with the previous generation standard H.264 / AVC, the computational complexity of HEVC has also increased significantly. resulting in an increase in video encoding time
If each image frame is divided into 4 layers to obtain the smallest coding unit, there are 35 prediction modes in total. If 35 prediction modes are used for each smallest coding unit to predict and calculate rate distortion, it will consume a lot of calculations resource

Method used

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Embodiment Construction

[0093] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0094] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...

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Abstract

The invention discloses an image coding method and device. The image coding method comprises the following steps: acquiring a to-be-coded image; in the process of segmenting the to-be-coded image to obtain a plurality of coding units, calculating a brightness gradient value of the coding unit corresponding to any coding unit; calculating texture strength of the coding unit in multiple directions according to the brightness gradient value; judging whether a condition that the coding unit is not continuously segmented is met or not according to the texture intensities in the multiple directions; if yes, stopping continuous segmentation of the coding unit. According to the invention, segmentation of the coding unit is stopped in time, the coding efficiency is improved, and the coding calculation amount is reduced.

Description

technical field [0001] The present application relates to the field of computer technology, and in particular, to an image encoding method and device. Background technique [0002] With the rapid development of information technology, the way people communicate has undergone major changes. As the fastest and most efficient way to obtain information, vision has made real-time video transmission more widely used in life. However, the amount of raw video data is very large, and it must be compressed and encoded before it can be transmitted in a limited channel. In 2013, JCT-VC officially released H.265 / HEVC as a new generation of international video coding standard. Although the compression efficiency has increased by 50% compared with the previous generation standard H.264 / AVC, the computational complexity of HEVC has also increased significantly. This leads to an increase in video encoding time. In the process of encoding an image frame, it is often necessary to divide the ...

Claims

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Application Information

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IPC IPC(8): H04N19/119H04N19/176
CPCH04N19/119H04N19/147H04N19/176
Inventor 庄航李倩王锐王忠丽
Owner 北京银河信通科技有限公司
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