medfilt

Median Filter. More...

Functions
AFAPI array	medfilt (const array &in, const dim_t wind_length=3, const dim_t wind_width=3, const borderType edge_pad=AF_PAD_ZERO)
	C++ Interface for median filter. More...
AFAPI af_err	af_medfilt (af_array *out, const af_array in, const dim_t wind_length, const dim_t wind_width, const af_border_type edge_pad)
	C Interface for median filter. More...

Detailed Description

Median Filter.

A median filter is similar to the arbitrary filter except that instead of a weighted sum, the median value of the pixels covered by the kernel is returned.

---

Function Documentation

AFAPI af_err af_medfilt	(	af_array *	out,
		const af_array	in,
		const dim_t	wind_length,
		const dim_t	wind_width,
		const af_border_type	edge_pad
	)

C Interface for median filter.

Parameters

[out]	out	array is the processed image
[in]	in	array is the input image
[in]	wind_length	is the kernel height
[in]	wind_width	is the kernel width
[in]	edge_pad	value will decide what happens to border when running filter in their neighborhood. It takes one of the values [AF_PAD_ZERO | AF_PAD_SYM]

Returns

AF_SUCCESS if the median filter is applied successfully, otherwise an appropriate error code is returned.

AFAPI array af::medfilt	(	const array &	in,
		const dim_t	wind_length = 3,
		const dim_t	wind_width = 3,
		const borderType	edge_pad = AF_PAD_ZERO
	)

C++ Interface for median filter.

    array a = array(4, 4, input);
    //af_print(a);
    //a = 1.0000        5.0000        9.0000       13.0000
    //    2.0000        6.0000       10.0000       14.0000
    //    3.0000        7.0000       11.0000       15.0000
    //    4.0000        8.0000       12.0000       16.0000
    array b = af::medfilt(a, 3, 3, AF_PAD_ZERO);
    //af_print(b);
    //b=  0.0000        2.0000        6.0000        0.0000
    //    2.0000        6.0000       10.0000       10.0000
    //    3.0000        7.0000       11.0000       11.0000
    //    0.0000        4.0000        8.0000        0.0000

Parameters

[in]	in	array is the input image
[in]	wind_length	is the kernel height
[in]	wind_width	is the kernel width
[in]	edge_pad	value will decide what happens to border when running filter in their neighborhood. It takes one of the values [AF_PAD_ZERO | AF_PAD_SYM]

Returns

the processed image

Examples:

image_processing/adaptive_thresholding.cpp, and image_processing/filters.cpp.