adjustContrast(ImGearRasterPage,double,double,double,ImGearContrastModes,ImGearChannelRange) Method

Structure that defines the channel range to process.

Processes the specified range of channels.

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

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

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

com.accusoft.imagegear.processing.ImGearContrastOptionsT:com.accusoft.imagegear.core.ImGearChannelRangecom.accusoft.imagegear.core.ImGearRasterPage

This method adjusts contrast, brightness, and gamma.

Syntax

public static void adjustContrast( 
   ImGearRasterPage page,
   double contrast,
   double brightness,
   double gamma,
   ImGearContrastModes mode,
   ImGearChannelRange channels
)

Parameters

page

Image to adjust contrast.

contrast

Contrast value.

brightness

Brightness value.

gamma

Gamma value.

mode

One of the following values: ImGearContrastModes.PALETTE - image palette is adjusted. If the image does not have a palette then an exception will be generated ImGearContrastModes.PIXEL - image pixels are adjusted ImGearContrastModes.AUTO - adjust mode depends on the image color space.

channels