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JPEG (Joint Photographic Experts Group) image compression method, device and equipment and readable medium

A compression method and image technology, which is applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of large amount of calculation, waste of computing resource images, etc., and achieve the goal of simplifying the compression process, reducing the amount of calculation, and realizing image compression Effect

Pending Publication Date: 2021-11-05
SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] In the JPEG image compression algorithm, DCT, quantization, encoding, etc. are performed on each sub-block, which will cause repeated calculations, resulting in a large amount of calculations and a waste of computing resources.

Method used

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  • JPEG (Joint Photographic Experts Group) image compression method, device and equipment and readable medium
  • JPEG (Joint Photographic Experts Group) image compression method, device and equipment and readable medium
  • JPEG (Joint Photographic Experts Group) image compression method, device and equipment and readable medium

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0025] Based on the above purpose, the first aspect of the embodiments of the present invention proposes an embodiment of a JPEG image compression method. figure 1 What is shown is a schematic diagram of an embodiment of the JPEG image compression m...

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Abstract

The invention discloses a JPEG (Joint Photographic Experts Group) image compression method, which comprises the following steps of: reading a current sub-block as a reference sub-block, performing DCT (Discrete Cosine Transform) compression based on the reference sub-block, and storing compressed image data into a memory; reading the next sub-block as an adjacent sub-block, and judging whether the source image data of the adjacent sub-block is equal to the source image data of the reference sub-block; in response to the fact that the source image data of the adjacent sub-block is equal to the source image data of the reference sub-block, adding one to the omitted compression number, and judging whether the omitted compression number is greater than a preset number of times or not; in response to the condition that the omitted compression number is not greater than the preset number of times, taking the compressed image data of the reference sub-block as the compressed image data of the adjacent sub-blocks and storing the compressed image data into a memory; and taking the adjacent sub-block as a new reference sub-block, taking the compressed image data of the adjacent sub-block as the compressed image data of the reference sub-block, and returning to the step of reading the next sub-block as the adjacent sub-block. The invention further discloses a JPEG image compression device, computer equipment and a readable storage medium.

Description

technical field [0001] The invention relates to the technical field of image compression, in particular to a JPEG image compression method, device, equipment and readable medium. Background technique [0002] With the rapid development of microelectronics technology, computer technology, and communication technology, human society has gradually entered the information age. Images are widely used as information carriers. Visual information accounts for 60% of the information received by humans. The amount of image data after digitization is very large. In the process of image transmission and storage, image compression is necessary and important. [0003] JPEG (Join Photographic Experts Group) is the first coding algorithm of the international color static image compression standard formulated by the Joint Photographic Experts Group. It is widely used because of its good image quality and high compression rate. The main steps include DCT (Discrete Cosine Transform, discrete ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/625H04N19/137H04N19/176
CPCH04N19/625H04N19/137H04N19/176
Inventor 宋金凤
Owner SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD
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