Merrill Shadow Enhancement with Retinex

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xpatUSA
xpatUSA Forum Pro • Posts: 19,888
Merrill Shadow Enhancement with Retinex

A long time ago,Land (he of Polaroid fame) invented a technique called Retinex for seeing through clouds and stuff. It is available in the GIMP and ImageJ (aka Fiji).

But, no matter what the settings, the Retinex result from a normal image is a bit fierce:

Here is the original image:

Personally I have little interest in shadow detail but, for those who do, here is the result from merging the original over the Retinex with 85% opacity:

look at the shadows at bottom left in original size+, click back and forth ...

Comments?

Feel free to download the original and show us other (better?) methods ...

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Pedantry is hard work, but someone has to do it ...

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