SeparateChannels Method

In This Topic

Creates an array of pages, where each page contains one channel with color space set to grayscale.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Shared Function SeparateChannels( _
   ByVal page As ImGearRasterPage _
) As ImGearChannelRef()

'Usage
 
Dim page As ImGearRasterPage
Dim value() As ImGearChannelRef
 
value = ImGearRasterProcessing.SeparateChannels(page)

public static ImGearChannelRef[] SeparateChannels( 
   ImGearRasterPage page
)

public: static ImGearChannelRef[]* SeparateChannels( 
   ImGearRasterPage* page
)

public:
static array<ImGearChannelRef>^ SeparateChannels( 
   ImGearRasterPage^ page
)

Parameters

page: Multichannel page to separate.

Return Value

An array of channels reference - ImGearChannelRef structure.

Remarks

This method does not do any of the color space or pixel conversions.

Example

C#
Visual Basic

// Separate original image into separate images for each channel.
ImGearChannelRef[] igChannelRefOriginal = ImGearRasterProcessing.SeparateChannels(igRasterPage);
// Save what the colorspace was of the image.
ImGearColorSpaceIDs igColorSpaceID = igRasterPage.DIB.ColorSpace.Value;
// Create a blank image with the same attributes as the original image.
ImGearRasterPage igRasterPageNew = new ImGearRasterPage(
    igRasterPage.DIB.Width, igRasterPage.DIB.Height,
    new ImGearColorSpace(igColorSpaceID),
    (int[])igRasterPage.DIB.ChannelDepths.Clone(), true);
// Separate new image into separate images for each channel.
ImGearChannelRef[] igChannelRefNew = ImGearRasterProcessing.SeparateChannels(igRasterPageNew);
// Update the first channel of the new image from the original image.
ImGearRasterProcessing.UpdateChannelFrom(igChannelRefNew[0], igChannelRefOriginal[0]);
// Combine channels back into new image.
igRasterPageNew = ImGearRasterProcessing.CombineChannels(
    new ImGearColorSpace(igColorSpaceID), igChannelRefNew);

' Separate original image into separate images for each channel.
Dim igChannelRefOriginal As ImGearChannelRef() = ImGearRasterProcessing.SeparateChannels(igRasterPage)
' Save what the colorspace was of the image.
Dim igColorSpaceID As ImGearColorSpaceIDs = igRasterPage.DIB.ColorSpace.Value
' Create a blank image with the same attributes as the original image.
Dim igRasterPageNew As New ImGearRasterPage( _
 igRasterPage.DIB.Width, igRasterPage.DIB.Height, New ImGearColorSpace(igColorSpaceID), _
 DirectCast(igRasterPage.DIB.ChannelDepths.Clone(), Integer()), True)
' Separate new image into separate images for each channel.
Dim igChannelRefNew As ImGearChannelRef() = ImGearRasterProcessing.SeparateChannels(igRasterPageNew)
' Update the first channel of the new image from the original image.
ImGearRasterProcessing.UpdateChannelFrom(igChannelRefNew(0), igChannelRefOriginal(0))
' Combine channels back into new image.
igRasterPageNew = ImGearRasterProcessing.CombineChannels(New ImGearColorSpace(igColorSpaceID), igChannelRefNew)

Reference

ImGearRasterProcessing Class
ImGearRasterProcessing Members
ImGearChannelRef Structure
ImGearRasterPage Class

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