Dear Researcher,

I would like to understand and enhance the color image contrast. I have somme questions to ask, i will be very appreciated if you answer me.

1. What does mean"high  dynamic range" and " high contrast"?

2. Is the image contrast affected by the illumination? 

3. To enhance the contrast of color image, i use the Retinex algorithm to decompose the image into illumination and reflectance images. Then, i enhance the contrast from the illumination image.

3.1 Is is correct to enhance the contrast of illumination image.? If so, what kind of images that we can apply this idea?

Thank you.

Best Regards

Khadidja BELATTAR

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