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AVL.SharpenImage Method

Enhances contrast of an image so that it appears sharper.

Namespace:	AvlNet
Assembly:	AVL.NET.dll

Syntax

public static void SharpenImage(
	AvlNet.Image inImage,
	float inContrastFactor,
	AvlNet.SmoothImageMeanKernel inKernel,
	int inRadiusX,
	int? inRadiusY,
	out AvlNet.Image outImage
)

Parameters

Name	Type	Range	Default	Description
inImage	AvlNet.Image			Input image.
inContrastFactor	float	<0.0f, INF>	1.0f	Value representing the strength of the contrast enhancement. Default value: 1.0f.
inKernel	AvlNet.SmoothImageMeanKernel			Kernel shape.
inRadiusX	int	<0, INF>	1	Nearly half of the kernel's width (2*R+1). Default value: 1.
inRadiusY	int ?	<0, INF>		Nearly half of the kernel's height (2*R+1), or same as inRadiusX. Default value: atl::NIL, or null.
outImage	AvlNet.Image			Output image.

Description

This filter increases the contrast of the image by multiplying by inContrastFactor the difference between a pixel value and its corresponding pixel value in the smoothed input image:

\[ \begin{aligned} outImage[i,j] &= inImage[i,j] + inContrastFactor \times (inImage[i,j] - smoothedImage[i,j]) \\ \end{aligned} \]

Examples

SharpenImage run on example image with inContrastFactor = 2.

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.

Hardware acceleration settings may be manipulated with Settings class.

Errors

Error type	Description
DomainError	Not supported kernel on input in SharpenImage.