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Date Posted: 07:49:17 11/10/00 Fri
Author: Michel
Subject: Re: Gray Scale buggy
In reply to: Paul Mead 's message, "Gray Scale buggy" on 10:01:26 11/09/00 Thu


Hi Paul,

I am aware about the gray images when being loaded get the ifColor256 or ifColor16 format. It is somewhat confusing because, as you say it is 256 colors of gray. I have added this to the todo list. The only way to solve this is to actually look at the palette and check that the RGB values are all equal for each entry.

About the tiff file saving were you able to isolate the problem where some "pink" got added to the palette?

For the tiff compression setting, there is a problem with the evaluation version, but with the source code it should be fine. You may want to verify the EnTifGr.Pas.SetCompression has this line at the very end of the method:

FCompression := InCompression;

Best regards,

Michel

> When loading a jpeg ( or bmp ...) image saved as
> 256Gray Scale the software flags it with ifColor256.
> This should not present a problem right it is just 256
> Colors of Gray. However other programs correctly find
> it as 256GrayScale.
>
> A big problem occurred when saving as Tiff. The newly
> saved file had some pink added to the pallete, also
> jpeg compression is not allowed.
>
> Tracing the load problems stems from assuming the 8
> bits per pixcel is ifColor256 and not ifGray256.
>
> Paul Mead

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