ImageGear for .NET
StretchContrast(ImGearRasterPage,ImGearContrastModes,ImGearChannelRange) Method
See Also Example Send Feedback

ImageGear21.Core Assembly > ImageGear.Processing Namespace > ImGearRasterProcessing Class > StretchContrast Method : StretchContrast(ImGearRasterPage,ImGearContrastModes,ImGearChannelRange) Method

page: Image to process.

mode: One of the contrast processing modes: ImGearContrastModes.PALETTE, ImGearContrastModes.PIXEL, ImGearContrastModes.AUTO.

channels: Channel range to process.

Stretches image contrast. Processes specified range of channels.

Syntax

Visual Basic

Managed Extensions for C++

C++/CLI

'Declaration
 
Public Overloads Shared Sub StretchContrast( _
   ByVal page As ImGearRasterPage, _
   ByVal mode As ImGearContrastModes, _
   ByVal channels As ImGearChannelRange _
)

'Usage
 
Dim page As ImGearRasterPage
Dim mode As ImGearContrastModes
Dim channels As ImGearChannelRange
 
ImGearRasterProcessing.StretchContrast(page, mode, channels)

public static void StretchContrast( 
   ImGearRasterPage page,
   ImGearContrastModes mode,
   ImGearChannelRange channels
)

public: static void StretchContrast( 
   ImGearRasterPage* page,
   ImGearContrastModes mode,
   ImGearChannelRange channels
)

public:
static void StretchContrast( 
   ImGearRasterPage^ page,
   ImGearContrastModes mode,
   ImGearChannelRange channels
)

Parameters

page: Image to process.
mode: One of the contrast processing modes: ImGearContrastModes.PALETTE, ImGearContrastModes.PIXEL, ImGearContrastModes.AUTO.
channels: Channel range to process.

Remarks

Can be applied only to raster pages with standard (non Run-Ends) DIB.

If ContrastMode is equal to ImGearContrastModes.PALETTE, DIB must have a palette.

Use ImGearRasterProcessingVerifier.CanApplyStretchContrast method to check whether the operation can be performed.

Example

C#	Copy Code
// Channel range to adjust contrast. ImGearChannelRange igChannelRange = new ImGearChannelRange(0, igRasterPage.DIB.ChannelCount); // Stretch the contrast. ImGearRasterProcessing.StretchContrast(igRasterPage, ImGearContrastModes.AUTO, igChannelRange);

Copy Code

// Channel range to adjust contrast.
ImGearChannelRange igChannelRange = new ImGearChannelRange(0, igRasterPage.DIB.ChannelCount);
// Stretch the contrast.
ImGearRasterProcessing.StretchContrast(igRasterPage,
    ImGearContrastModes.AUTO, igChannelRange);

Visual Basic	Copy Code
' Channel range to adjust contrast. Dim igChannelRange As New ImGearChannelRange(0, igRasterPage.DIB.ChannelCount) ' Stretch the contrast. ImGearRasterProcessing.StretchContrast(igRasterPage, ImGearContrastModes.AUTO, igChannelRange)