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Fine particle compressed image quality evaluation method

A technology for compressing images and quality evaluation, which is applied in the field of image processing and can solve problems such as the inability to effectively evaluate compression quality.

Pending Publication Date: 2022-03-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the bit rate difference between the compressed images is more obvious, so the distortion difference of the corresponding images is also more obvious
However, these algorithms cannot effectively evaluate the compression quality when the bit rate difference of the compressed image is not large.

Method used

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Embodiment Construction

[0057] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to protection domain of the present invention.

[0058] The present invention provides an embodiment, a method for evaluating the quality of a fine-grain compressed image, including:

[0059] S1, acquiring image structure features;

[0060] S2, acquiring image texture features;

[0061]S3, the image structure feature and the image texture feature are fused to obtain a fine-grain compressed image quality evaluation score. Fine-grain compressed images refer to compressed images with fairly similar compression bit rates and little difference in dist...

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Abstract

The invention provides a fine particle compressed image quality evaluation method. The method comprises the following steps: acquiring image structure features; obtaining image texture features; fusing the image structure feature and the image texture feature to obtain a fine particle compressed image quality evaluation score; and evaluating the quality of the fine particle compressed image according to the fine particle compressed image quality evaluation score. The method can be effectively used for evaluating the quality of the compressed image with small bit rate difference, and has important significance for the development of an image compression technology and an image compression quality evaluation technology.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method for evaluating the quality of super-granule compressed images. Background technique [0002] In recent years, with the rapid development of mobile devices and social media, under the constraints of limited bandwidth and lower latency requirements, people expect images to be transmitted with better perceptual quality, which brings new challenges to image compression technology and image compression quality evaluation. Here comes the great challenge. Among them, JPEG and JPEG2000 are the most widely used image compression technologies, and they realize image compression by removing information in the image. Among these compression techniques, MSE (Mean Square Error) and PSNR (Peak Signal-to-Noise Ratio) are usually used as quality evaluation indicators and optimization criteria. However, numerous studies have shown that PSNR and MSE correlate poorly with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06V10/422G06V10/54G06V10/80G06V10/98G06V10/74G06V10/56
CPCG06T7/0002G06T7/90G06T2207/30168G06F18/22G06F18/253
Inventor 闵雄阔张子澄孙伟王涛朱文瀚翟广涛
Owner SHANGHAI JIAO TONG UNIV