Hi, Li. According to your paper, the reflectance R and the illumination L are implemented in the V channel of HSV colorspace. Then the enhanced image is transformed from HSV to RGB colorspace. However, in your code, we discover that the R and L are color in RGB colorspace rather than single channel in the V channel, and they seem to be performed by RGB colorspace. You can explain this phenomenon so that it gives us more help.
Thank you!
angleboy8
commented
3 years ago 
Hi, Li. According to your paper, the reflectance R and the illumination L are implemented in the V channel of HSV colorspace. Then the enhanced image is transformed from HSV to RGB colorspace. However, in your code, we discover that the R and L are color in RGB colorspace rather than single channel in the V channel, and they seem to be performed by RGB colorspace. You can explain this phenomenon so that it gives us more help. Thank you!