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Image processing method and device, electronic equipment and computer readable storage medium

An image processing and image technology, applied in the field of image processing, can solve the problems of easily neglected subjective quality, lossy, poor subjective quality, etc., and achieve the effect of improving subjective quality and reducing excessive phenomenon.

Pending Publication Date: 2021-11-19
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

However, this method is a lossy compression method, which tends to ignore the subjective quality, resulting in relatively poor subjective quality.

Method used

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  • Image processing method and device, electronic equipment and computer readable storage medium
  • Image processing method and device, electronic equipment and computer readable storage medium
  • Image processing method and device, electronic equipment and computer readable storage medium

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Embodiment Construction

[0030] In the prior art, there is a high-magnification video compression method based on preprocessing. The key points of its design are: by calculating the texture intensity and direction of pixels, the image is divided into flat area, texture area and edge area, and the texture area and edge area are calculated. The direction is quantized into horizontal direction and vertical direction. Then use 9-tap low-pass filtering for flat areas to save bit rate, use bi-cubic linear filtering for texture and edge areas to remove noise and weaker textures, and achieve low bit rate through the above methods. The purpose of this scheme is mainly to reduce the encoding bit rate. Although the texture complexity of the current frame is also judged and the area is divided, but the low-pass filter is used for different areas, and the middle frequency cannot be achieved. Subjective quality improvement of general textures and high-frequency strong textures at low bitrates.

[0031] The prior a...

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Abstract

The invention provides an image processing method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: carrying out the calculation and statistics of the texture gradient of a to-be-processed image, and determining an intermediate-frequency texture region and a high-frequency texture region in the to-be-processed image; and enhancing the intermediate-frequency texture region and the high-frequency texture region in different enhancement modes to obtain a processed image. According to the method, intermediate-frequency textures and high-frequency textures are enhanced to different degrees, and the original intention of texture enhancement is better met, so that the intermediate-frequency textures are not lost by a relatively large quantization step size at a low bit rate as much as possible, and a prediction mode is stabilized by enhancing the textures; the high-frequency strong texture enhancement is weak, the excessive phenomenon after enhancement is reduced, and the subjective quality of the image can be improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method, device, electronic equipment, and computer-readable storage medium. Background technique [0002] The current mainstream video coding is a hybrid coding scheme using temporal and spatial domain prediction. This scheme removes redundant information in the video, encodes a large amount of video data, and then obtains a code stream. This method greatly reduces storage capacity and transmission. bandwidth. However, this method is a lossy compression method, and it is easy to ignore the subjective quality, resulting in relatively poor subjective quality. Contents of the invention [0003] The invention provides an image processing method, device, electronic equipment, and computer-readable storage medium. The method can improve the subjective quality of an image. [0004] In order to solve the above technical problems, the first technic...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/40G06T7/13G06T7/44
CPCG06T5/40G06T7/44G06T7/13G06T2207/10016G06T5/70
Inventor 杜亚鹏方瑞东粘春湄林聚财殷俊张兴明
Owner ZHEJIANG DAHUA TECH CO LTD
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