Low-quality image enhancement method under severe weather conditions

A severe weather and image enhancement technology, applied in the field of image processing, can solve the problems of too bright, unable to compress image dynamic range and color fidelity, image color degradation, etc., achieve good color correction, improve visual effect, low The effect of complexity

Active Publication Date: 2018-07-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that when the prior art processes color images, the image obtained by homomorphic filtering will have serious color degradation; or the Retinex algorithm will produce "halo" phenomenon when the illumination is uneven, and local

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  • Low-quality image enhancement method under severe weather conditions
  • Low-quality image enhancement method under severe weather conditions
  • Low-quality image enhancement method under severe weather conditions

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[0076] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0077] A low-quality image enhancement method for bad weather conditions, which mainly includes three parts, one is to restore the color part of the image based on the Retinex theory, the other is to perform homomorphic filtering on the brightness part of the image, and the third is to Split the image channel and combine the two parts of the processing results; specifically include the following: read the degraded image (that is, the image to be processed), classify the degraded image, and process different types of image information with different algorithms (such as color images using this Accord...

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Abstract

The invention discloses a low-quality image enhancement method under severe weather conditions, and belongs to the field of image processing. The method solves the problem that images obtained by homomorphic filtering have serious color degradation or the problem that a halo phenomenon occurs and a local part is too bright due to the Retinex algorithm when light is not uniform. According to the method, a to-be-processed image is read, the color of the image is repaired through a Retinex method into an RGB space, and a colorful improved image F is obtained; the to-be-processed image is read, the image brightness range is compressed by using a homomorphic filtering algorithm in an HSV space, and the contrast ratio is enhanced to obtain the improved brightness image Jv; the processing resultsin step 1 and step 2 are unified in the HSV space, the hue and saturation information of the image after Retinex processing is extracted, the brightness information of the image obtained after homomorphic filtering processing is extracted, and the extracted hue, the saturation information and the brightness information are fused to obtain a final image. The method is used for enhancing low-quality images.

Description

technical field [0001] The invention relates to a method for enhancing low-quality images under severe weather conditions, which is used for enhancing low-quality images and belongs to the field of image processing. Background technique [0002] In the field of image processing and computer vision, serious degradation of images collected by image collectors under severe weather conditions is a long-standing problem. With the rapid development of computer vision, in order to serve the follow-up analysis, interpretation, recognition and tracking work, people put forward higher and higher requirements for the quality of images. Severe weather is the leading cause of degradation in today's outdoor images. [0003] When shooting outdoor images, the image quality is greatly affected by the weather. Different particles scattered in the atmosphere under different weather conditions will have different effects on image formation. The raindrops scattered in the atmosphere in rainy ...

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Application Information

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IPC IPC(8): G06T5/00G06T7/90
CPCG06T5/001G06T2207/10024G06T2207/20024G06T2207/20182G06T7/90
Inventor 周子玉彭真明张明英卢耀坤饶紫鹏曹思颖宋立马沪敏刘安王卓然杨春平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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