Low Light Image Enhancement and Denoising
The human visual system employs many opponent processes, both in the retina and visual cortex, that rely heavily on differences in color, luminance or motion to trigger salient reactions. Contrast is the difference in luminance and/or color that makes an object distinguishable, and this is an important factor in any subjective evaluation of image quality. The images acquired in low-light condition often have poor quaility and poor visibiliity. This is because of limitation of shutter angles, noise contents due to high ISO, spectral biasing toward blue. Traditional enhancement techniques wash out details, flatten appearance, and amplify noise.
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