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Algorithm that removes the water from underwater images

Started Nov 13, 2019 | Discussions thread
kelpdiver Veteran Member • Posts: 5,564
Re: Algorithm that removes the water from underwater images

Joep van Steen wrote:

However first you say it's similar to taking sand as a point for WB, and that's simply not correct. Even if you could accomplish more or less the same by accident using Photoshop and whatnot, it still does not make it the same. It only illustrates you're missing the point.

Is there a point?   Seems to be a lot of whining for a guy who also proclaims to not care.

Color correcting for depth and lighting is the point.   Sand, skin, and sometimes the tank can serve as a substitute for the grey card, and then the photographer can adjust as subjectively appropriate.  It's fairly simple, works now, and works with one shot.   As someone who spends much more time shooting moving objects, one shot is important.   Shooting a coral reef every 4 months to watch trends - might be able to work with the requirements.

I will remain skeptical that there is a 'correct' color result.   Going past the obvious variability in the environment and the lighting used, even the camera sensors vary.  Canon colors vs Sony's shadow pulling.

Progress comes when there is a repeatable (by others) experiment.  We're not there here.

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