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SelectDataCommand Constructor(RasterColor,int,int,int,bool)

Summary

Initializes a new SelectDataCommand class object with explicit parameters.

Syntax

C#
VB
C++
Public Function New( _ 
   ByVal color As Leadtools.RasterColor, _ 
   ByVal sourceLowBit As Integer, _ 
   ByVal sourceHighBit As Integer, _ 
   ByVal threshold As Integer, _ 
   ByVal combine As Boolean _ 
) 
public: 
SelectDataCommand(  
   Leadtools.RasterColor color, 
   int sourceLowBit, 
   int sourceHighBit, 
   int threshold, 
   bool combine 
) 

Parameters

color
Color used for showing the variances in the image.

sourceLowBit
Position of the start bit that will construct the mask. The position is a zero based number. This parameter accepts only positive values.

sourceHighBit
Position of the end bit that will construct the mask. This is inclusive (it is part of the mask). The value should not be less than sourceLowBit. You can also pass -1, which is interpreted as "highest bit" (SourceImage->BitsPerPixel - 1). This parameter accepts only positive values.

threshold
Value that indicates the threshold for showing the image variances. If the mask value is greater or equal to the threshold value then the pixel will be colored using Color. See Combine for more details. This parameter accepts only positive values.

combine
A flag which tells how to color the output pixels:

  1. Pixels with values greater than or equal to the threshold value are set to the value in the color parameter(if combine is set to false) or AND-ed with color (if combine is true). In this case, the source pixel is first converted to grayscale 24-bit and then AND-ed with color.
  2. Pixels with values less than the threshold value are set to black (if combine is set to false) or The RGB pixel value will be the same as the high byte source pixel value (if combine is true). That is R = G = B = High byte values of the source pixel.
Example

Run the SelectDataCommand on an image.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void SelectDataConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Beauty16.jpg")); 
 
   // Prepare the command 
   SelectDataCommand command = new SelectDataCommand(new RasterColor(233, 10, 77), 2, 6, 25, true); 
   command.Run(image); 
   codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "SelectDataResult.Bmp"), RasterImageFormat.Bmp, 24); 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing.Core 
      Leadtools.Examples.Support.SetLicense() 
 
Public Sub SelectDataConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "ImageProcessingDemo\Beauty16.jpg")) 
 
   ' Prepare the command 
   Dim command As SelectDataCommand = New SelectDataCommand(New RasterColor(233, 10, 77), 2, 6, 25, True) 
   command.Run(leadImage) 
   codecs.Save(command.DestinationImage, Path.Combine(LEAD_VARS.ImagesDir, "SelectDataResult.bmp"), RasterImageFormat.Bmp, 24) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 

Requirements

Target Platforms

Help Version 19.0.2017.10.18
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Leadtools.ImageProcessing.Core Assembly