On my way…
2 Likes
I should be getting on with a new fitted kitchen for wife but wondered if I could remove the problems with the reflections on the rail/pipe.
So quick develop with rawtherapee. -1.3 stops exposure and a bit of work on the black end of a curve to bring those up a bit. Then fotoxx. Curves,colour, warmth,select reflections-desaturate-adj brightness- then the blend brush over them. Worked pretty well and could be improved further with a bit of a smear in the gimp. Then cropped, reduced and sharpened. Then the gimp. Duplicate layer, softlight with a very quickly painted mask to bring back shadow detail just leaving it active on the sky. Matter of taste, I used 25% opacity on it.
John
Photoflow (Hue preserved but some banding on the left)
IMG_3129.pfi (47.2 KB)
Darktable with no preserving chrominance v5 (very smooth gradients but yellow hue-shift)
Darktable with no preserving chrominance v6
IMG_3129.CR2.xmp (9.4 KB)
wow seems to be hard to get colour right on this one. tried vkdt:
using a spectral input profile and set white balance to around 4000K such that it wouldn’t only be red.
4 Likes
thanks for posting
darktable 4.0
IMG_3129_02.CR2.xmp (19.5 KB)
Add a new one
IMG_3129_08.CR2.xmp (29.0 KB)
Thanks for sharing!
dt 3.9.0 + sigmoid
IMG_3129_02.CR2.xmp (11.0 KB)
a slightly warmer version by tweaking color calibration:
IMG_3129.CR2.xmp (10.6 KB)
3 Likes
I really like the soft tones and the colours in this one.
Thank you @age for bring this nice image up after 3 years 
Hier is my edit:
Darktable 4.0.0 IMG_3129.CR2.xmp (21.3 KB)
2 Likes
Little improvement on my tonemapping using the power-norm for smoother gradients (no more banding on the wall on the left)
IMG_3129.pfi (49.8 KB)
i=[r,g,b]
max=max(r,g,b)
min=min(r,g,b)
lum=(r^3+g^3+b^3)/(r^2+g^2+b^2)
rtm=(1-(pivot/((r/gray)^power+pivot))) // tone mapping or simple tone curve on the red channel
gtm=(1-(pivot/((g/gray)^power+pivot)))// tone mapped or simple tone curve on the green channel
btm=(1-(pivot/((b/gray)^power+pivot)))// tone mapped or simple tone curve on the blu channel
crgbtm=[rtm,gtm,btm]
maxtm=max(rtm,gtm,btm)
mintm=min(rtm,gtm,btm)
lumtm=(rtm^3+gtm^3+btm^3)/(rtm^2+gtm^2+btm^2)
chromatm=1-(mintm/lumtm)
chroma2=1-(min((r-lum+lumtm),(g-lum+lumtm),(b-lum+lumtm))/lumtm)
chromamult=if(chromatm==0||chroma2==0,0,chromatm/chroma2)
i=[r,g,b]
final_image=((i-lum)*chromamult+lumtm)*0.60+crgbtm*0.40;
5 Likes
That’s very nice! It’s your tool open source? Do you have a link?
Right now it is a G’mic script that I use in Photoflow from the G’mic interpreter
-fill power=1.40;gray=0.18;pivot=(1-gray)/gray;max=max(i0,i1,i2);min=min(i0,i1,i2);lum=(i0^3+i1^3+i2^3)/(i0^2+i1^2+i2^2);i0tm=(1-(pivot/((i0/255/gray)^power+pivot)))*255;i1tm=(1-(pivot/((i1/255/gray)^power+pivot)))*255;i2tm=(1-(pivot/((i2/255/gray)^power+pivot)))*255;crgbtm=[i0tm,i1tm,i2tm];maxtm=max(i0tm,i1tm,i2tm);mintm=min(i0tm,i1tm,i2tm);lumtm=(i0tm^3+i1tm^3+i2tm^3)/(i0tm^2+i1tm^2+i2tm^2);chromatm=1-(mintm/lumtm);chroma2=1-(min((i0-lum+lumtm),(i1-lum+lumtm),(i2-lum+lumtm))/lumtm);chromamult=if(chromatm==0||chroma2==0,0,chromatm/chroma2);chromamult=if(chromamult<0,0,chromamult);i=[i0,i1,i2];i=((i-lum)*chromamult+lumtm)*0.60+crgbtm*0.40;
1 Like
Color profile turned off.
White point picked on grey deck in foreground.
Black point reset to 0
Enhanced Edges and Residual contrast in Wavelets
L*a*b* color stretch, shift cyan sky to blue.
HSV Hue channel bumped pink sunset color to more natural yellow-orange gradient.
IMG_3129.jpg.out.pp3 (16.3 KB) ← RT
dev
4 Likes
Another , and sadly I will not continue to try something new, is to copy the hue from CIE xyY to the rgb tonemmaped image
(Edit: It seems the copying the hue from xyy is better for noisy images)
in this case I blended the hue from xyY at only 60% strength
IMG_3129xyy.pfi (47.7 KB)
CIE xyY is not a perceptual color space so if we blend the hue at 100% strength we could get pinkish colors, for example the fire test image turn to this
Blended at 60%
2 Likes