So, people are going crazy with the correction of the colors Apple is going on the Xs generation.
- If you want, I was able to reverse it almost totally in Photoshop.
- It looks to be a histogram color correction, the details can be recovered.
S, let’s look at the histogram to understand what was done …
- You can see that the blue color got raised pretty heavely in some part of the spectrum.
- The deviation, if you do a Fourrir spectrum analysis of the color curves got totally smoother out, it looks like the colors have been bilineary interpolated. It makes totally sense if you want to remove color contrast on a picture, to appear to have a lot smoother skin.
Looking at the histograms of only the skin, there is an obvious removal of the yellow component of the skin, that does explain the drifting to more pinkish pictures, the heavy tune down and blue and green …
You can see as well the work of the smoother color interpolation on the histogram here:
The top of the picks are being smoothed out, and made more narrow, removing the diversity of color, and causing the skin to look smoother. The color information is lost here, you can not give it back the details without using machine learning complete reconstruction algos.
Basically, the iPhone Xs generation does a face detection, and it is a selfy, it does smooth out your color spectrum to make you look prettier.
If I had to implement something like this, I would take a color histogram, detect the color skin peaks, and narrow them by only doing it on the pixels part of this spectrum area.
Asking to Asians people around me, they love this feature on the iPhone Xs, they call it the “Samsung trick” …