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Date Posted: 20:28:05 03/12/01 Mon
Author: Bill Miller
Subject: Re: RGB and Threshold
In reply to: Michel 's message, "Re: RGB and Threshold" on 18:54:32 03/12/01 Mon

I guess it is not really a filter... rather need to spilt image into the 3 RGB planes then apply a threshold. The threshold principle is simple - just pick a number, and then set all pixels with a lower value to "black" or "0", and all pixels above to "white" or "255". The pixel setting can be done with a LUT operation.

I am experimenting with Graphics32 library to do this in conjunction with Envision to provide TIF file access to Graphics32. The combination of Envision and Graphics32 library works very well by the way.

The link to Intel Image Library is at <a rel=nofollow target=_blank href="http://developer.intel.com/software/products/perflib/ipl/index.htm">http://developer.intel.com/software/products/perflib/ipl/index.htm</a>

Do not want to use it though because it requires DLL.

Good to hear from you.

Regards

Bill

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