Threshold Method (input, threshold)

Converts the input image to a black/white image (i.e. an image that contains only two different colors) using the specified threshold value.

Declaration Syntax

Visual Basic

Visual C++

public static Bitmap Threshold(
	Bitmap input,
	byte threshold
)

Public Shared Function Threshold ( _
	input As Bitmap, _
	threshold As Byte _
) As Bitmap

public:
static Bitmap^ Threshold(
	Bitmap^ input, 
	unsigned char threshold
)

Parameters

threshold (Byte): The threshold value that decides whether an output pixel is colored black or white. If the input value is smaller than the threshold, the output pixel is colored black, otherwise white.

Return Value

A grayscale image that contains only black and white pixels.

Remarks

If the image is not a grayscale image, it will be converted using the ConvertRgbToGrayscaleImage(Bitmap) method.

Exceptions

Exception	Condition
ArgumentNullException	If input is null.
ArgumentException	If the input image is not a grayscale image and 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)