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Method and device for encoding and decoding video image data

A technology of video image and coding method, which is applied in the field of video coding and decoding, and can solve problems such as increasing system complexity and separate coding of alpha channels

Active Publication Date: 2018-03-02
SUPERD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method and device for encoding and decoding video image data, to solve the encoding method of video image data with an alpha channel in the prior art, which requires separate encoding of the alpha channel, which increases the complexity of the system degree of question

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  • Method and device for encoding and decoding video image data
  • Method and device for encoding and decoding video image data
  • Method and device for encoding and decoding video image data

Examples

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no. 1 example

[0254] to combine figure 1 As shown, the encoding method of video image data in the embodiment of the present invention includes:

[0255] Step 101, acquire image data of a video image, where the image data includes first format data and non-color channel data.

[0256] It should be noted that, in the embodiment of the present invention, the non-color channel data refers to channel data other than the color channel, such as alpha channel data. Of course, it is not limited to alpha channel data, and can also be other channel data, such as using Other channel data required for image fusion.

[0257]For example, the image data obtained in this step can be, for example, RGB (red, green, blue) format color data and alpha channel data, or can also be certain YUV format data and alpha channel data, and of course can also be other The first format data and channel data, which are not limited in the present invention.

[0258] Step 102, combining the data in the first format and the...

no. 2 example

[0266] and figure 1 Corresponding to the illustrated embodiment, the embodiment of the present invention also provides a decoding method for video image data, combining figure 2 As shown, the decoding method of video image data in the embodiment of the present invention includes:

[0267] Step 201, acquire encoded combined image data.

[0268] In this step, the encoded data obtained is the image data of the video image acquired by the encoding end, the image data includes first format data and non-color channel data, and the first format data and non-color channel data are combined and processed , obtained by acquiring combined image data in a second format and encoding the combined image data in the second format. In the embodiment of the present invention, the non-color channel data refers to channel data other than the color channel, such as alpha channel data. Of course, it is not limited to alpha channel data, and may also be other channel data.

[0269] For example, ...

no. 3 example

[0277] In this embodiment, the first format example is RGB format, that is, the first format data is RGB color data, and the non-color channel data example is Alpha channel data. In this embodiment, the encoding end will first convert the color data in RGB format to An intermediate format, and then encode the intermediate format data and the alpha channel data after combination, the following will be described in detail, combined image 3 As shown, the encoding method of the video image data of the present embodiment includes:

[0278] Step 301, acquiring RGB color data and alpha channel data of a video image.

[0279] Here, the image data of the video image obtained in this step is video image data with an alpha channel, and the format is RGBA, including RGB (red, green and blue) color data and alpha channel data A, where A is the transparency information of the corresponding RGB pixel.

[0280] Step 302, converting the RGB color data into data in a first predetermined YUV f...

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Abstract

The invention provides a video image data coding method and device, and a video image data decoding method and device and relates to the technical field of video coding and decoding. The problem that in the prior art, an alpha channel needs to be coded independently, so the system complexity is increased, and a corresponding relationship of an image and the alpha channel cannot be ensured can be solved. The invention comprises the steps of obtaining image data of video images, wherein the image data comprises data of a first format and non-color channel data; combining the data of the first format and the non-color channel data, thereby obtaining combined image data of a second format; and coding the combined image data of the second format. According to the scheme of the method and the device, the alpha channel does not need to be coded independently, the corresponding relationship of the image and the alpha channel is ensured, and the system complexity is reduced.

Description

technical field [0001] The invention relates to the technical field of video encoding and decoding, in particular to a method and device for encoding and decoding video image data. Background technique [0002] In the current field of video images, there are more and more cases of adding virtual backgrounds to portraits or other objects. Generally, it is necessary to separate the portraits or other objects from the original image, and then combine the extracted portraits or objects with the virtual background. background combined. In the prior art, the transparency of each pixel can be controlled through the alpha channel in the image to realize the separation of the object or portrait, and then realize the fusion of the object or portrait with the background. Taking a portrait as an example, the alpha channel of the portrait part in the original image can be set to be opaque, while other parts can be set to be transparent, and the boundary part of the portrait can be set t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/115H04N19/146H04N19/186H04N19/196H04N19/21
CPCH04N19/115H04N19/146H04N19/186H04N19/196H04N19/21
Inventor 田志泽李晓鸣
Owner SUPERD CO LTD