truecolor:
A term used to describe an image that has a bit depth similar to the response of the human eye and which is considered to represent color as seen through the human eye.
TWAIN: ...
truecolor display
A term used to imply that a device is capable of displaying 2^24 (16,777,216) colors or more (said to match or exceed the color-resolving power of the human eye).
Pseudocolor In contrast to truecolor, where every point of a picture has an individual color, a pseudocolor picture has an index to a color table for every point.
It has the advantage of truecolor (16 million colors). It can be used for editing photographs, since it doesn't lose quality through repeated savings like JPEG.
24 bpp [224=16777216; (16,777,216 colours, known as Truecolor or Millions)].
48 bpp [248; (for a human's practical purpose, a continuous colorspace; used in many flatbed scanners and for professional work) ...
 See also: Space, Format, Image, Application, JPEG
  
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