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Date Posted: 05:51:03 10/11/01 Thu
Author: Heiko
Subject: incorrect values in a colormap

Hello Michel,

thank you for the response to my question 'Convert 4 bit to 16bit Tif'. It works now!

But i have a new problem. Itīs importend for me, that the colors in my images have exactly values.
I define the RGB values with the 'tagPALETTEENTRY' type:

e.g. newtifgraphic.PalettePtr^.palPalEntry[n].peRed := 85;

newtifgraphic is a TTIFFGraphic. I repeat this for each colorvalue in each color in my colormap and save the TIFFGraphic. And now, when I reload the graphic all values are reduced by 1. Only the value 0 is correct. The result of the line above is 84.

I can't increase the value by 1, because I need often the value 255 and the value 256 isn't valid in a Byte array.

Have you an idea?

Many thanks
Heiko

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