DeHalo_alpha() actually lightens the source. It is Tweak() that pulls it back down again (“bright=-5”). Avisynth docs note that Tweak()'s variables are floating-point. One should be able to set “bright=-4.5” and get a compromise-image between the two previous test results.
Right, I got it confused there. Although an interpolation still remains?
Aside from non-pro LCD monitors’ “what you see isN’T what you get”, the sequence of processing in Avisynth may significantly affect the result. I didn’t realize all the extra processing DrDre was throwing at it outside of the super resolution program until I read his last version: Star Wars GOUT in HD using super resolution algorithm (page 50) - SRV15.
Several people have stated that they noticed a green shift in V15 (see Page 15, by the way: Are we not able to directly link to posts here?!). Personally I would try it with V12, maybe I will find some time for that.
It’s considered prudent to make minimum use of this function by grouping same-colorspace processing under a single ConvertTo, or by only using functions that operate under the same colorspace. Colorspace conversions have rounding errors, which compound in the destination.
DrDre already tried to keep conversions to a minimum as he stated on many pages ago where he also resolved a problem that came from colorspace conversions. Can’t find it anymore. Why don’t all plugins even support one “standard” colorspace like RGB32?