LEADTOOLS Support
Imaging
Imaging SDK Questions
HOW TO: Highlight part of image using region and simple processing
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Sunday, November 30, 2014 10:16:32 PM(UTC)
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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.
Amin Dodin
Senior Support Engineer
LEAD Technologies, Inc.
![LEAD Logo LEAD Logo](https://www.leadtools.com/images/new-site-images/leadtools-logo-header.png)
LEADTOOLS Support
Imaging
Imaging SDK Questions
HOW TO: Highlight part of image using region and simple processing
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