ConvertRgbToGrayscaleImage Method (input, coeffR, coeffG, coeffB)

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

Declaration Syntax

Visual Basic

Visual C++

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

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

Parameters

input (Bitmap): A color image.

coeffR (Double): The coefficient for the red color component.

coeffG (Double): The coefficient for the green color component.

coeffB (Double): The coefficient for the blue color component.

Return Value

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).

Assembly: Ranorex.Core (Module: Ranorex.Core) Version: 3.2.3.16825 (3.2.3.16825)