convert RGB image to 8 bit with colour reduction

[WernerGobel]

Is there an easy way of converting a 24 bit RGB image to an 8 bit image so that it can be displayed in an intensity graph with an appropriate colour table?

[zou]

If you can provide an appropriate color table, convert from 24 to 8 is easy.
See Image Toolbox (http://www.geocities.com/gzou999/imgtool.htm).

Otherwise, you have to go through every pixel to find 256 mostly used colors
to be used as new color table.

George Zou
http://gtoolbox.yeah.net

[DFGray]

IMAQ will do this conversion for you, but you need to buy it. Another alternative is calling Image Magick using the System Exec.vi. You can get Image Magick at http://www.imagemagick.org/.