thorr said:
It would be interesting to see the bluray … to see how it is supposed to look.

(Sorry, but first reaction is … that it’s a funny thing to say around here.)

But, yes, the Blu-ray does show the helmet almost like it was processed (no solid black line along the front):

(fullsize 1920x824: http://www.vcdq.com/files/samples/16-2011/64867/96247362.jpg)

about how the “After” was constructed (if it is SRV15 or not)

The “before” was SRV15 and the “after” was SRV15 processed with the Avisynth code shown with the picture(s) posted here.

There are several issues: The darker part at the very top of the soldier’s helmet is removed;

All those deep-dark parts were bad-sharpening artifacts. The remaining lighter line on the very top of the helmet is a residual halo and should be removed, too, possibly with a 2nd pass of DeHalo_alpha() at new setting for that.

his mouth looks strange,

Only because … “We’re on a diplomatic mission … cough, choke, gag, sputter.”

the brightness (black level) of the image changed,

Already noted and with a mention on an easy fix.

and overall detail is reduced.

Overall noise is reduced. Detail is still there. See the mention about sharpening and DeHalo-ing.

Hope that helps!