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Image compression and decompression method, equipment, device and storage medium

An image compression and decompression technology, which is applied in the field of image processing, can solve the problems such as image color bands that cannot be solved, and achieve the effect of improving the dark field effect, accommodating noise, and improving image quality

Active Publication Date: 2021-05-11
SPREADTRUM COMM (TIANJIN) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this type of white noise can effectively suppress the banding effect and improve the visual perception to a certain extent, it cannot solve the problem of color banding in the decompressed image caused by the existing compression technology

Method used

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  • Image compression and decompression method, equipment, device and storage medium
  • Image compression and decompression method, equipment, device and storage medium
  • Image compression and decompression method, equipment, device and storage medium

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are part of the embodiments of the application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

[0036] The terms "first", "second", "third" and "fourth" in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed s...

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Abstract

The invention relates to the technical field of image processing, and particularly discloses an image compression and decompression method, equipment and device and a storage medium. The image compression and decompression method comprises the steps: obtaining a first image; performing bit depth expansion on the first image to obtain a second image; performing compression processing on the second image to obtain a compressed image; performing decompression processing on the compressed image to obtain a second image; and performing bit depth reduction on the second image to obtain a first image.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image compression and decompression method, device, device and storage medium. Background technique [0002] At present, in the traditional compression method, an original signal such as an image in RAW format is first generated by a photosensitive element (Sensor). Then, the source image is obtained through preprocessing by an image signal processing (Image Signal Processing, ISP) module, and then JPEG compression is performed. This compression method will cause loss of image quality, for example, there will be problems such as color banding (banding) and block effect in the decompressed image. In practical applications, in order to improve the visual quality, the color band problem in the decompressed image will be solved by dithering technology. This technique creates the illusion of color depth in an image using a limited combination of colors in the pal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/172H04N19/42
CPCH04N19/172H04N19/42
Inventor 牛俊慧郭春磊
Owner SPREADTRUM COMM (TIANJIN) INC
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