The monitors control panel is used to set the monitor on the mac to various
choices.
Gray level images are displayed properly with
- 256 Grays
- Thousands of colors
- Millions of colors
Color overlays are displayed properly with
- Thousands of colors
- Millions of colors
False color images , such as thresholded images or traceback
maps, are displayed allright with 256 colors, best with either thousands
or millions of colors.
|
 |
If sufficient colors are not provided, the Mac system will do the best
it can at assigning the colors in the system palette to the image. In most
cases, a 'contoured' or blotchy appearence results.
Encoded Colors
-
Colors are encoded as a 3x8=24 byte integer. Red (0 - 255 ) is the high
order byte, Green the middle byte, and blue the low order byte. (eg: 255
is bright blue, (ash 255 8 = 65280 = 255 * 2^8) is bright green, etc.
The image array of an RGB image has encoded colors as the pixel values.