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retinex

Arguments:

• _value_offset>0,_colorspace={ hsi | hsv | lab | lrgb | rgb | ycbcr },0<=_min_cut<=100,0<=_max_cut<=100,_sigma_low>0,_sigma_mid>0,_sigma_high>0

Description:

Apply multi-scale retinex algorithm on selected images to improve color consistency.

(as described in the page http://www.ipol.im/pub/art/2014/107/).

Default values:

offset=1, colorspace=hsv, min_cut=1, max_cut=1, sigma_low=15,sigma_mid=80 and sigma_high=250.