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#1 Posted : Wednesday, March 28, 2012 7:43:22 AM(UTC)

URso5  
URso5

Groups: Registered
Posts: 6


I want to convert a Color image to black /white,and keep the red color,is there a function to do this? thanks

my leadtools is V16.5
 

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#2 Posted : Thursday, March 29, 2012 7:10:22 AM(UTC)

Daoud  
Daoud

Groups: Registered
Posts: 256


Hello,
This can be done by doing the following:
1) Define a region for all non-red pixels in the image.
If you're using .NET, this can be done with the AddColorToRegion(), AddColorRgbRangeToRegion() or AddColorHsvRangeToRegion() functions, with the RasterRegionCombineMode.SetNot flag.
2) Apply the Auto Binarize function to the image, which will only affect the region, making all non-red pixels either black or white.

 
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