Code Tip: How to determine if an image is Color, Black & White, or Grayscale using LEADTOOLS

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#1 Posted : Monday, June 5, 2017 8:42:35 AM(UTC)

Roberto

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If you have a need to automatically detect the color type of input files in your application you could write a routine that looks at individual pixel color values and iterate through each pixel row by row, coloumn by column but who has time for that. Instead, you can use the LEADTOOLS ImageColorTypeCommand. The following code snippet will return the detected image color type and the associated confidence.

Code:

public void detectColorType()
{
   using (RasterCodecs codecs = new RasterCodecs())
   {
      RasterImage image = codecs.Load(@"PATH TO IMAGE FILE");
      ImageColorTypeCommand command = new ImageColorTypeCommand();
      command.Run(image);
      Console.WriteLine($"Color Type: {command.ColorType}\nConfidence: {command.Confidence}");
   }
}

The output from this code will be an ImageColorType (Color, BlackAndWhite, GrayScale or none).

Roberto Rodriguez
Developer Support Engineer
LEAD Technologies, Inc.


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#2 Posted : Friday, August 31, 2018 8:42:37 AM(UTC)

Christopher Thompson

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Posts: 89

Was thanked: 4 time(s) in 4 post(s)

ColorTypeCommand from v20 LEADTOOLS Online Documentation.

Attached is a fully functioning sample application that utilizes the code snippet provided from the post above.
The project uses the LEADTOOLS v20 SDK.

The Leadtools.Pdf.dll is included to work with PDF files. Other Codices may need to be added to work with the various types of file formats that LEADTOOLS Supports.

File Attachment(s):

simpleDetectColor_20.zip (194kb) downloaded 241 time(s).

Chris Thompson
Developer Support Engineer
LEAD Technologies, Inc.

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