Single image defogging method based on structural information
A technology of structure information and single image, applied in image enhancement, image data processing, instrument, etc., can solve the problems of defogging image detail structure information preservation, color distortion, not very good, etc.
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[0082] Include the following steps
[0083] 1. Given a foggy image, such as figure 1 As shown, the resolution of the image is 450×441;
[0084] 2. Establish a physical model of image fog degradation;
[0085] The degradation model of foggy images consists of two parts. The first part is the direct attenuation term, which describes the attenuation result of the light reflected by the scene object in the medium. The second part is ambient light, which reflects the comprehensive effect of various light sources.
[0086] I(x)=J(x)t(x)+L ∞ (1-t(x)), (1)
[0087] Among them, I is the observed foggy image, J is the real image to be restored, L ∞ is atmospheric light, t(x)=e -d(x) is the transmittance, and t(x)∈(0,1), d(x) is the depth of field, it can be seen that the transmittance has a direct relationship with the depth of field.
[0088] A=L ∞ (1-t(x)) This term is called ambient light;
[0089] 3. Estimated atmospheric light L ∞ ;
[0090] Firstly, the hazy image is di...
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