Haze-removing algorithm of single image based on physical properties of yellow haze

A technology with physical characteristics and a single image, which is applied in the field of image processing, can solve problems such as not considering the accurate meaning of brightness in the atmospheric scattering model, failing to correct chromatic aberration, restoring the original brightness and contrast of the image, etc., to restore the original brightness and Contrast, the effect of reducing the color difference of the image

Active Publication Date: 2015-10-28
XIDIAN UNIV
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Problems solved by technology

[0005] The selection of atmospheric light values ​​in the prior art determines the brightness value with the highest brightness in the image with the naked eye, without considering the exact meaning of brightness in the atmospheric scattering model, and in the process of image processing, there is no consideration of the two different types of fog and haze. The weather conditions are treated differently, but a unified treatment is carried out. Since the specific causes of fog and haze are different, the result of using a unified treatment method is that it cannot correct the color difference and restore the original brightness and contrast of the image.

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  • Haze-removing algorithm of single image based on physical properties of yellow haze
  • Haze-removing algorithm of single image based on physical properties of yellow haze
  • Haze-removing algorithm of single image based on physical properties of yellow haze

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Embodiment 1

[0044] This embodiment provides a single image haze removal algorithm based on the physical characteristics of yellow haze, such as figure 1 As shown, the single image haze removal algorithm includes:

[0045] 101. Acquire an image to be processed, and determine a sky area in the image to be processed.

[0046] 102. Determine atmospheric light points in the sky region, and determine ratios of color channels in the image to be processed.

[0047] 103. Determine a transmission map of the image to be processed according to a ratio of color channels in the channels to be processed.

[0048] 104. In combination with the physical characteristics of the yellow haze, adjust the saturation of the transmission map to generate an adjusted image.

[0049] In the implementation, first determine the sky area in the image to be processed, after determining the atmospheric light point in the sky area, determine the ratio of the color channel in the image to be processed according to the det...

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Abstract

The invention discloses a haze-removing algorithm of a single image based on physical properties of yellow haze, and belongs to the field of image processing. The method comprises: obtaining a to-be-processed image; determining a sky area of the to-be-processed image; determining atmospheric light spots in the sky area; determining a specific value of a color channel in the to-be-processed image; determining a transmission diagram of the to-be-processed image according to the specific value of the color channel in the to-be-processed image; adjusting saturability of the transmission diagram according to the physical properties of yellow haze; and generating an adjusted image. Compared with a method of uniformly processing fog and haze in the prior art, the method can adjust color of the image to be quite similar to the real color, so that original brightness and saturability of the image are recovered.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a single image haze removal algorithm based on the physical characteristics of yellow haze. Background technique [0002] Nowadays, air pollution is becoming more and more serious, especially the smog weather, which occurs almost every day after the beginning of winter. Due to the scatter effect of smog particles on light, the details of the image are blurred and the overall image quality of the pictures taken outdoors is degraded. [0003] In the prior art, the mainstream image processing method is to obtain the atmospheric light value in the picture, determine the distribution map of the atmospheric transmission transmittance in the image according to the atmospheric light value, and then determine the defogging expression according to the atmospheric transmission transmittance, so that according to The above haze removal expression processes the image to remove the influence of...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06T5/00
Inventor苗启广李宇楠宋建锋权义宁公茂果陈为胜唐兴
OwnerXIDIAN UNIV