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#1 Posted : Sunday, November 30, 2014 10:21:32 PM(UTC)

Amin  
Amin

Groups: Manager, Tech Support
Posts: 353


If the bitmap has a region, many LEADTOOLS processing functions act on the region instead of the full image.
This code sample shows how to add emphasis to part of the image by dimming out the rest of the image.
The C# code is simply this:

img.AddRoundRectangleToRegion(null, new LeadRect(80, 80, 400, 200), new LeadSize(90, 90), RasterRegionCombineMode.SetNot);
ChangeIntensityCommand changeIntensity = new ChangeIntensityCommand(-300);
changeIntensity.Run(img);

Where img is a RasterImage.
The code defines a region for all parts outside the emphasis area then reduces the intensity of these parts.

The attached image shows how the bitmap looks before processing and after.
File Attachment(s):
ProcessRegion.jpg (319kb) downloaded 38 time(s).
Amin Dodin

Senior Support Engineer
LEAD Technologies, Inc.
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