8bit greyscale -> 1bit mono without local contrast calculations

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Tuesday, September 13, 2005 6:55:39 AM(UTC)

Dave

Groups: Registered
Posts: 5

Hi,

I have an 8bit greyscale image which I need to convert to a 1bit mono image based on a threshold value (0 - 256). I thought the LBitmap::DynamicBinary() function would do this but it seems that the local contrast test is getting in the way, and setting uDim to 1 doesn't work either.

I simply need it to check each grey pixel in isolation against my threshold and change it to 0 if its less and 255 (or 1) if its greater. Is there a way to get DynamicBinary() to do this or some other function?

Thanks,
Dave.


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#2 Posted : Thursday, September 15, 2005 3:38:39 AM(UTC)

Gabe

Groups: Registered, Tech Support
Posts: 46

Dave,

Have you taken a look at LBitmap::IntensityDetect? I think this is the function you need. Let us know. Thanks,

Gabriel

Gabe
Developer Support
LEAD Technologies, Inc.

#3 Posted : Tuesday, September 20, 2005 1:38:18 AM(UTC)

Dave

Groups: Registered
Posts: 5

Hi Gabriel,

Thanks LBitmap::IntensityDetect does what I needed.

Dave.

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