Change Amount Channels In Pic

[Winston]

(01-18-2021, 02:09 PM)rich2005 Wrote: My problem with your question is one of definitions.
Your two pixel example actually has 1500+ colours as:  https://i.imgur.com/5GJSKTS.jpg
Whereas an indexed image with two colours, blue and yellow (three actually, I left black in to define boundaries)  as: https://i.imgur.com/BpnZNe8.jpg

Raw Images ? Two types, Photographic RAW, various formats depending on camera make) Import only  and a RAW data format which can be exported and opened.  To open RAW-data you do need to know the original properties, dimensions, etc (or be good at guessing)  as:  https://i.imgur.com/Xl1u4cE.jpg

Look at Example 1. This has the red-green pixels mixed into yellow. It has shade, unlike Example 2. Example 2 just has one shade of black, blue, and yellow. Is it possible to make a palette with more than one shade of plain blue-and-yellow, perhaps look closer to Example 1?