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Date Posted: 10:05:45 04/02/00 Sun
Author: Michel
Subject: Re: Visualize images
In reply to: Juan Carlos 's message, "Visualize images" on 05:44:41 04/01/00 Sat


Hi Juan,

You are probably mentionning this about black and white images. Wang-Imaging and other libraries often have automatic anti-aliasing with black and white images. This converts a black and white image to a gray scale image (usually 16 shades of gray), which makes the image easier to read on a computer monitor. This is also what Adobe Acrobat does when displaying black and white documents on screen.

You may set the AntiAliased property of the TImageScrollBox component to True, which will make the image smoother. But indeed, the anti-alias, is not as good as most commercial librairies, as internally the resize is a seperate operation, using StretchDiBits for speed, but the quality could be better. Speed is very important for a good anti-aliasing as it is often done on-the-fly. This will be improved in a future version.

Best regards,

Michel

> I notice the images are visualized with the lib worse
> than with other programs. I'm now working with Tiff
> images and they look fine with, eg., Wang-Imaging, but
> the same look bad with the Lib and Delphi.
>
> Is there a way to improve it?
>
> Thanks in advance,
> Juan Carlos

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