filters.cl File Reference

Macros
#define	at2(arr, x, y, width)   arr[x * width + y]

Functions
__kernel void	gaussian_filter (__global uchar *inputL, __global uchar *inputR, __global uchar *gaussianL, __global uchar *gaussianR)
__kernel void	sobel_filter (__global uchar *inputL, __global uchar *inputR, __global uchar *sobelL, __global uchar *sobelR)

Variables
float constant	gaussian_kernel [25]
float constant	sobel_kernelY [25]
float constant	sobel_kernelX [25]

Macro Definition Documentation

at2

#define at2	(		arr,
			x,
			y,
			width
	)		arr[x * width + y]

Function Documentation

gaussian_filter()

__kernel void gaussian_filter	(	__global uchar *	inputL,
		__global uchar *	inputR,
		__global uchar *	gaussianL,
		__global uchar *	gaussianR
	)

Perform 5x5 Gaussian filtering on an image

Parameters

inputL	Left input image
inputR	Right input image
gaussianL	The Gaussian filtered left image
gaussianR	The Gaussian filtered right image.

sobel_filter()

__kernel void sobel_filter	(	__global uchar *	inputL,
		__global uchar *	inputR,
		__global uchar *	sobelL,
		__global uchar *	sobelR
	)

Perform 5x5 Sobel filtering on an image

Parameters

inputL	Left input image
inputR	Right input image
sobelL	The Sobel filtered left image
sobelR	The Sobel filtered right image.

Variable Documentation

gaussian_kernel

float constant gaussian_kernel[25]

Initial value:

= { 0.000002f, 0.000212f, 0.000922f, 0.000212f, 0.000002f,
0.000212f, 0.024745f, 0.107391f, 0.024745f, 0.000212f,
0.000922f, 0.107391f, 0.466066f, 0.107391f, 0.000922f,
0.000212f, 0.024745f, 0.107391f, 0.024745f, 0.000212f,
0.000002f, 0.000212f, 0.000922f, 0.000212f, 0.000002f }

sobel_kernelX

float constant sobel_kernelX[25]

Initial value:

= { -0.41666f, -0.06666f,  -0.08333f, -0.06666f,  -0.41666f,
-0.03333f, -0.08333f,  -0.16666f, -0.08333f,  -0.03333f,
0.0f,   0.0f,   0.0f,   0.0f,   0.0f,
0.03333f, 0.08333f,  0.16666f, 0.08333f,  0.03333f,
0.41666f, 0.06666f,  0.08333f, 0.06666f,  0.41666f }

sobel_kernelY

float constant sobel_kernelY[25]

Initial value:

= { -0.41666f,  -0.03333f,  0.0f,  0.03333f,  0.41666f,
-0.06666f,  -0.08333f,  0.0f,  0.08333f,  0.06666f,
-0.08333f,  -0.16666f,  0.0f,  0.16666f,  0.08333f,
-0.06666f,  -0.08333f,  0.0f,  0.08333f,  0.06666f,
-0.41666f,  -0.03333f,  0.0f,  0.03333f,  0.41666f }