DetectEdgesLaplace Method (input, scale, margin)

Converts the input images to a grayscale image that contains object edges from the input image using a Laplace filter kernel, optionally scaling grayscale values in the output image.

Declaration Syntax

Visual Basic

Visual C++

public static Bitmap DetectEdgesLaplace(
	Bitmap input,
	bool scale,
	out int margin
)

Public Shared Function DetectEdgesLaplace ( _
	input As Bitmap, _
	scale As Boolean, _
	<OutAttribute> ByRef margin As Integer _
) As Bitmap

public:
static Bitmap^ DetectEdgesLaplace(
	Bitmap^ input, 
	bool scale, 
	[OutAttribute] int% margin
)

Parameters

input (Bitmap): An image.

scale (Boolean): If true, the FilterScaled(Bitmap, array<Int32,2>[,](,)[,]) method is used to filter the input image; otherwise the Filter(Bitmap, array<Int32,2>[,](,)[,]) method is used.

margin ( Int32 %): When this method returns, contains an integer that specifies the pixel margin in the output image that has not been written to because of the filter size.

Return Value

A grayscale image containing object edges.

Remarks

By default the LaplaceKernel5x5 is used as the filter kernel, unless the image with or height is smaller than 5 pixels; in that case the LaplaceKernel3x3 is used instead.

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)