contrib/oxl/osl/osl_canny_gradient.cxx File Reference

#include "osl_canny_gradient.h"
#include <vcl_cmath.h>

Go to the source code of this file.

Functions
void	osl_canny_gradient (int xsize_, int ysize_, float const *const *smooth_, float *const *dx_, float *const *dy_, float *const *grad_)
	compute x,y-derivatives and absolute value of gradient.
void	osl_canny_gradient_central (int xsize_, int ysize_, float const *const *smooth_, float *const *dx_, float *const *dy_, float *const *grad_)
	computes doubled central derivatives : df[i] = f[i+1]-f[i-1].

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Detailed Description

Author:

fsm

Definition in file osl_canny_gradient.cxx.

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Function Documentation

void osl_canny_gradient	(	int	xsize_,
		int	ysize_,
		float const *const *	smooth_,
		float *const *	dx_,
		float *const *	dy_,
		float *const *	grad_
	)

compute x,y-derivatives and absolute value of gradient.

xsize_ is the number of rows [sic] and ysize_ the number of columns [sic].

Definition at line 19 of file osl_canny_gradient.cxx.

void osl_canny_gradient_central	(	int	xsize_,
		int	ysize_,
		float const *const *	smooth_,
		float *const *	dx_,
		float *const *	dy_,
		float *const *	grad_
	)

computes doubled central derivatives : df[i] = f[i+1]-f[i-1].

the boundary pixels are left untouched.

Definition at line 67 of file osl_canny_gradient.cxx.