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Image processing method and device

A processing method and image technology, applied in the field of image processing, can solve problems such as large code streams, achieve the effect of reducing data volume and solving excessive code streams

Pending Publication Date: 2021-10-22
XIAN WANXIANG ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an image processing method and device, so as to at least solve the technical problem in the prior art that the code stream obtained by progressively encoding the image is too large

Method used

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Experimental program
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Embodiment 1

[0026] According to an embodiment of the present invention, an embodiment of an image processing method is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0027] figure 1 is a flowchart of an image processing method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0028] In step S102, the image to be processed is divided into multiple macroblocks, and discrete wavelet transform is performed based on each macroblock to obtain sub-frequency bands corresponding to each macroblock.

[0029] Specifically, the above-mentioned image to be processed may be a single image, or may be a frame of image i...

Embodiment 2

[0072] According to an embodiment of the present invention, an embodiment of an image processing device is provided, image 3 is a schematic diagram of an image processing device according to an embodiment of the present invention, such as image 3 As shown, the device includes:

[0073] A division module 30, configured to divide the image to be processed into a plurality of macroblocks, and perform discrete wavelet transform based on each macroblock to obtain a sub-band corresponding to each macroblock;

[0074] The encoding module 32 is used to encode the color value of the pixel point in each sub-band with a preset number of layers, wherein the encoding result of each layer is obtained by shifting the color value of the pixel point, and the Nth layer is used to perform The displacement parameter of the shift is determined by the encoding result of the previous layer, and N is an integer greater than 1;

[0075] The transmission module 34 is configured to transmit the enco...

Embodiment 3

[0078] According to an embodiment of the present invention, a storage medium is provided, the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the image processing method described in Embodiment 1.

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Abstract

The invention discloses an image processing method and device. The method comprises the following steps: dividing a to-be-processed image into a plurality of macro blocks, and performing discrete wavelet transform based on each macro block to obtain a sub-band corresponding to each macro block; coding the color values of the pixel points in each sub-band by a preset number of layers, wherein the coding result of each layer is obtained by shifting the color values of the pixel points, the displacement parameter used for shifting in the Nth layer is determined by the coding result of the previous layer, and N is an integer greater than 1; and transmitting a code stream obtained by coding to a decoding end of the to-be-processed image. According to the invention, the technical problem that the code stream obtained by carrying out progressive coding on the image in the prior art is too large is solved.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to an image processing method and device. Background technique [0002] In order to display images on different devices, it is usually necessary for the sending end to encode the image, and then send the encoded code stream to the decoding end, and then the decoding end decodes the code stream to obtain the image to be displayed. [0003] Currently used encoding methods include progressive encoding. The basic process of progressive encoding is: perform DWT transform (discrete wavelet transform) and Quantization and layering, and the layered data is directly transmitted to the decoder for decoding. Although the use of progressive coding can reduce the size of the transmission code stream, the code stream that needs to be transmitted is still relatively large, so that the image transmission is easily affected by factors such as bandwidth, resulting in a delay in the display at...

Claims

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Application Information

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IPC IPC(8): H04N19/124H04N19/176H04N19/182H04N19/63
CPCH04N19/63H04N19/176H04N19/124H04N19/182
Inventor 石文仙范志刚
Owner XIAN WANXIANG ELECTRONICS TECH CO LTD
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