Rawtherapee: Combined Amaze/VNG4 demosaic

[heckflosse]

I created amaze_vng4 branch with a combined amaze/vng4 demosaic. It blends the result of vng4 demosaic and amaze demosaic based on contrast. Currently the threshold is hard coded. I mapped it to EAHD demosaic for tests.

Here are first results:

Left is amaze, right is plain vng4

Left is Amaze, right is Amaze/vng4 combined

[sguyader]

@heckflosse Neat idea and results, Ingo!

[TooWaBoo]

Hey, looks good, merge it. 😁

[heckflosse]

I cleaned the code and created an own entry for AMaZE+VNG4 in demosaic combobox

[heckflosse]

@TooWaBoo

Hey, looks good, merge it.

5 hours between the first mockup and a merge really is not enough time ;-)

[heckflosse]

related to #2008

[ff2000]

Ok, this is getting better and better...

Amaze, sharpening + microcontrast, NR: 20 luma, 60 detail:

Amaze.Vng4: DualDemosaicContrast=40, sharpening + microcontrast, NR: 0 luma, 0 detail

This is ISO 1000 on Micro Four Thirds, with an adapted Micro-Nikkor (https://kenrockwell.com/nikon/105af.htm) - not the very best lens considering resolution for the pixelpitch of that sensor.

I played with other files and for some I could enable microcontrast where previously it just detroyed "flat" areas. Same applies to Local Contrast.

Thx for your continued efforts!

[iliasg]

Ingo, you made an old dream come true !! many thanks :)

[Hombre57]

@heckflosse Code cleanup in commit 928309f3aab7adc520d2676970cf9dca85e8308e