Re: What is the best way to do color removal

I need to be able to remove printed artifacts from an image in a pre-processing stage. The artifacts are either red or green, and I need to be able to remove them completely from the image (i.e. convert them to white).

Could anyone suggest the best commands/tools to do this from the Raster Pro .Net SDK.

Thanks in anticipation.

 

Chris Lewis

Thank you for your support of LEAD and LEADTOOLS.

The answer below is based on the fact that we have not actually seen your image. If the answer is not satisifactory, please copy this thread and send it and a sample image to support@LEADTOOLS.com.

You need to basically create a region consisting of the colors you would like to remove. Once the region is created, you can fill the region with white. Below is a small snippet of code that will give you an idea of what needs to be done for converting the green pixels to white. There are examplesfor thefunctions used in the help file.

Dim color As New RasterColor(0, 255, 0) 'set this to be thecolor of your green pixels. You can also use 'IRasterImage.AddColorRgbRangeToRegion' if you 'have arange of greens

image.AddColorToRegion(color, RasterRegionCombineMode.Set) ' add the region to the image

Dim command As Leadtools.ImageProcessing.FillCommand = New Leadtools.ImageProcessing.FillCommand

command.Color = New Leadtools.RasterColor(255,255, 255) ' set to white
command.Run(image) ' fill the region with white

Again, let us know if this helps get you going in your situation.

Edited by moderator Wednesday, March 29, 2017 12:14:49 PM(UTC)  | Reason: Not specified