Description

VuoImageConvolve interface.

Copyright: Copyright © 2012–2017 Kosada Incorporated. This code may be modified and distributed under the terms of the MIT License. For more information, see http://vuo.org/license.

Typedefs
typedef void *	VuoImageConvolve
	State data for the image Convolverer.

typedef double(*	VuoImageConvolveFunction )(double x, double y, double param)
	A function that can be passed to VuoImageConvolve_generateMatrix.

Functions
VuoImageConvolve	VuoImageConvolve_make (void)
	Creates state data for the image Convolverer.

VuoImage	VuoImageConvolve_convolve (VuoImageConvolve convolve, VuoImage image, VuoImage convolutionMatrix, VuoThresholdType channels, double intensity, VuoDiode range)
	Returns a convolved copy of image.

double	VuoImageConvolve_laplacianOfGaussian (double x, double y, double radius)
	Returns the (0,0)-centered Laplacian-of-Gaussian function at the given position and sigma.

unsigned int	VuoImageConvolve_laplacianOfGaussianWidth (double sigma)
	Returns a recommended matrix width for VuoImageConvolve_laplacianOfGaussian.

VuoImage	VuoImageConvolve_generateMatrix (VuoImageConvolveFunction f, unsigned int width, bool removeDCOffset, double param)
	Returns an image containing a set of (unnormalized) weights for the specified function.

Typedef Documentation

State data for the image Convolverer.

typedef double(* VuoImageConvolveFunction)(double x, double y, double param)

A function that can be passed to VuoImageConvolve_generateMatrix.

VuoImage VuoImageConvolve_convolve	(	VuoImageConvolve	convolve,
		VuoImage	image,
		VuoImage	convolutionMatrix,
		VuoThresholdType	channels,
		double	intensity,
		VuoDiode	range
	)

Returns a convolved copy of image.

(Or, if radius is zero, returns image.)

convolutionMatrix must be square and have odd width/height.

VuoImage VuoImageConvolve_generateMatrix	(	VuoImageConvolveFunction	f,
		unsigned int	width,
		bool	removeDCOffset,
		double	param
	)

Returns an image containing a set of (unnormalized) weights for the specified function.

double VuoImageConvolve_laplacianOfGaussian	(	double	x,
		double	y,
		double	radius
	)

Returns the (0,0)-centered Laplacian-of-Gaussian function at the given position and sigma.

(This is the continuous version of the function, but we make up for it by normalizing and removing the DC offset in VuoImageConvolve_generateMatrix.)

unsigned int VuoImageConvolve_laplacianOfGaussianWidth ( double sigma )

Returns a recommended matrix width for VuoImageConvolve_laplacianOfGaussian.

VuoImageConvolve VuoImageConvolve_make ( void )

Creates state data for the image Convolverer.