ImagingProcessingConvertRgbToGrayscaleImage Method (Bitmap, Double, Double, Double)

Converts a color to a grayscale image (bitmap format Format8bppIndexed) by calculating grayscale values according to the specified color component coefficients.

Namespace: Ranorex
Assembly: Ranorex.Core (in Ranorex.Core.dll) Version: 12.7.4-git.38314c06

Syntax

Copy

public static Bitmap ConvertRgbToGrayscaleImage(
	Bitmap input,
	double coeffR,
	double coeffG,
	double coeffB
)

Public Shared Function ConvertRgbToGrayscaleImage ( 
	input As Bitmap,
	coeffR As Double,
	coeffG As Double,
	coeffB As Double
) As Bitmap

Parameters

input: Type: System.DrawingBitmap
A color image.
coeffR: Type: SystemDouble
The coefficient for the red color component.
coeffG: Type: SystemDouble
The coefficient for the green color component.
coeffB: Type: SystemDouble
The coefficient for the blue color component.

Return Value

Type: Bitmap
A grayscale image.

Exceptions

Exception	Condition
ArgumentNullException	If input is null.
ArgumentException	If the input image cannot be converted to Format24bppRgb pixel format (i.e. if it is no color image in a 32 bit format).

Reference

ImagingProcessing Class

ConvertRgbToGrayscaleImage Overload

Ranorex Namespace

ImagingAddLanguageSpecificTextSet("LSTB35F52C9_0?cpp=::|nu=.");ProcessingAddLanguageSpecificTextSet("LSTB35F52C9_1?cpp=::|nu=.");ConvertRgbToGrayscaleImage Method (Bitmap, Double, Double, Double)

Parameters

Return Value

Reference

ImagingProcessingConvertRgbToGrayscaleImage Method (Bitmap, Double, Double, Double)