Image coding method and device, image reconstruction method and device, electronic equipment and storage medium

An image coding and image reconstruction technology, applied in the field of image processing, can solve problems such as image distortion, loss of chrominance components, image quality loss, etc., and achieve the effect of image quality improvement, image distortion resolution, and low cost

Pending Publication Date: 2022-08-05
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some technologies, the local video image is collected, encoded and compressed by the front end, transmitted to the remote end through the IP network, and then displayed after being decoded by the decoding chip at the remote end; the image will be distorted during the entire encoding and decoding process, and the main reason is that, At present, almost all dedicated DSP chips can only encode and decode based on YUV420 format; compared with the original image using YUV444 format, encoding and decoding in YUV420 format will seriously lose chrominance components, resulting in loss of image quality

Method used

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  • Image coding method and device, image reconstruction method and device, electronic equipment and storage medium
  • Image coding method and device, image reconstruction method and device, electronic equipment and storage medium
  • Image coding method and device, image reconstruction method and device, electronic equipment and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Embodiment 1, an image encoding method, such as Figure 4 shown, including:

[0059] S110, assign the YUV component in the original image of YUV444 format to the first image of YUV420 format and the second image of YUV420 format according to the first predetermined rule; splicing the first image and the second image into one piece according to the second predetermined rule New images in YUV420 format;

[0060] S120. Encode the new image after splicing.

[0061] In this embodiment, the first image, the second image, and the new image after splicing are in the YUV420 format, which means that the number and distribution of the YUV components in these images conform to the YUV420 format; In a sense, the images in the YUV420 format can be the same or different, for example, the images can only contain UV components.

[0062] The method of this embodiment converts the original image into YUV420 format and then encodes it, which can reduce the transmission bandwidth, so tha...

Embodiment 2

[0075] Embodiment 2, an image reconstruction method, such as Figure 5 shown, including:

[0076] S210, decode the coded image to obtain a new image in YUV420 format; wherein, the coded image is a new image in the compressed YUV420 format obtained by encoding the new image in the YUV420 format;

[0077] S220, the new image in YUV420 format obtained by decoding is divided into the first image in YUV420 format and the second image in YUV420 format according to the third predetermined rule; The YUV components in the first image and the second image are reconstructed and restored to one In the image, the original image restored to the YUV444 format is obtained; wherein, the YUV components in the original image in the YUV444 format are allocated in the first image in the YUV420 format and the second image in the YUV420 format according to a first predetermined rule.

[0078] In this embodiment, the first image, the second image, and the decoded new image are in the YUV420 format, ...

Embodiment 3

[0090] Embodiment 3, an image encoding device, such as Image 6 shown, including:

[0091] The first programmable logic device 61 is used to distribute the YUV components in the original image in YUV444 format to the first image in YUV420 format and the second image in YUV420 format according to a first predetermined rule; Splicing into a new image in YUV420 format according to the second predetermined rule;

[0092] The first processing chip 62 is used to encode the new image in YUV420 format after splicing.

[0093] In some exemplary embodiments, the first programmable logic device 61 is an FPGA, and the first processing chip 62 is a DSP chip.

[0094] This embodiment adopts the architecture of FPGA and DSP collaborative processing. The FPGA realizes the splitting and combination of the original image data, and the DSP realizes the encoding of the image data. The collaborative architecture greatly reduces the performance requirements for a single chip, and at the same time...

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Abstract

The embodiment of the invention discloses an image coding method and device, an image reconstruction method and device, electronic equipment and a storage medium. The image coding method comprises the following steps: distributing YUV components in an original image in a YUV444 format to a first image in a YUV420 format and a second image in the YUV420 format according to a first preset rule; splicing the first image and the second image into a new image in a YUV420 format according to a second preset rule; the spliced new image in the YUV420 format is coded; the image reconstruction method comprises the following steps: decoding a coded image to obtain a new image in a YUV420 format; segmenting the new image in the YUV420 format obtained by decoding into a first image in the YUV420 format and a second image in the YUV420 format according to a third preset rule; reconstructing and restoring the YUV components in the first image and the second image into one image to obtain an original image restored into a YUV444 format; yUV components in the original image in the YUV444 format are distributed in the first image and the second image according to a first preset rule.

Description

technical field [0001] The embodiments of the present application relate to, but are not limited to, the field of image processing, and in particular, relate to an image coding and reconstruction method and apparatus, an electronic device, and a storage medium. Background technique [0002] At present, IP surveillance and video codec technology has been widely used, and major chip design companies have also launched various special video image codec chips, such as the early Texas Instruments DaVinci series DSP (Digital Signal Processing, digital signal processing), and then to Huawei HiSilicon chips, etc., video encoding and decoding technologies have been maturely applied. In some technologies, the local video image is collected, encoded and compressed by the front end, transmitted to the remote end through the IP network, and displayed after being decoded by the decoding chip at the remote end; the image will be distorted during the entire encoding and decoding process. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/42H04N19/44H04N19/186
CPCH04N19/42H04N19/44H04N19/186
Inventor 潘鸿天
Owner ZHEJIANG UNIVIEW TECH CO LTD
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