I think Van Gogh was Color weakness. (1)

I will write about color vision for a while from today.
Today is "About Van Gogh's color vision".

I myself am a P-type weak "color weaker". And I think Van Gogh was probably about the same color weakness.

I'll write the reason little by little.

 
First is the introduction.

 This is Van Gogh's self-portrait (1). No color processing. I scanned an art book and put it on. The background is in front of the body and the front and back are reversed. The face is also slightly flat. The background, face, and body are somehow unnatural.

Here is the processed self-portrait (1) by me. The face is in front of you, then the body, and behind it is the background. The depth is natural and looks very three-dimensional.

Next time, I will explore a little more in depth.