Hi all, 

When eye retina send impulse to brain, brain then use data from impulse to create impression of color. What is this final process called? What should I Google for? I can not wrap my head around the transformation of data to world impression....

There are multiple stages to the processing that takes place. You could try googling for "visual system" or "visual cortex" or "image recognition"

These might get you started with the general principles and structures involved:

https://en.wikipedia.org/wiki/Visual_system

https://en.wikipedia.org/wiki/Cognitive_neuroscience_of_visual_object_recognition

And if you start getting into the "meaning" of what the brain sees, then you might want to read up on "qualia" (https://en.wikipedia.org/wiki/Qualia)

6 minutes ago, Youss27 said:

When eye retina send impulse to brain, brain then use data from impulse to create impression of color. What is this final process called? What should I Google for? I can not wrap my head around the transformation of data to world impression....

It's a type of transformation. Perhaps you can find some helpful keywords here: https://en.wikipedia.org/wiki/Visual_system

x-posted with Strange

Thank you both for info, it is a good start