ToGrayscaleBitmap Method

In This Topic

Creates a GrayscaleBitmap from the current GcBitmap.

This method does not perform any transformations of the color palette. It is expected that the source GcBitmap has already been converted to grayscale palette using a GrayscaleEffect or something like that. Alternatively, you can use this method to extract individual channels of a color image without any prior conversion, and treat the resulting GrayscaleBitmap simply as a representation of some image data with 8 bits per pixel. The ToGrayscaleBitmap method just copies data from a specified color channel to a new instance of the GrayscaleBitmap class. If you need to copy some color channel to an existing instance of GrayscaleBitmap, use the ExportColorChannel method instead.

Syntax

Visual Basic
C#

'Declaration
 
Public Function ToGrayscaleBitmap( _
   Optional ByVal colorChannel As ColorChannel, _
   Optional ByVal whiteIsZero As System.Boolean _
) As GrayscaleBitmap

public GrayscaleBitmap ToGrayscaleBitmap( 
   ColorChannel colorChannel,
   System.bool whiteIsZero
)

Parameters

colorChannel: The color channel used as the source of grayscale data.
whiteIsZero: If true, indicates that 0 represents white and 255 represents black in the resulting GrayscaleBitmap.

Return Value

A new instance of GrayscaleBitmap.

Reference

GcBitmap Class
GcBitmap Members