guided_filter.c File Reference

#include "common/box_filters.h"
#include "common/guided_filter.h"
#include "common/math.h"
#include "common/opencl.h"
#include <assert.h>
#include <float.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for guided_filter.c:

Data Structures
struct	tile
struct	color_image

Macros
#define	GF_TILE_SIZE   512
#define	SIMD_FOR   for
#define	_mm_prefetch(where, hint)
#define	INP_MEAN   0
#define	GUIDE_MEAN_R   1
#define	GUIDE_MEAN_G   2
#define	GUIDE_MEAN_B   3
#define	COV_R   0
#define	COV_G   1
#define	COV_B   2
#define	VAR_RR   3
#define	VAR_RG   4
#define	VAR_RB   5
#define	VAR_GG   6
#define	VAR_BB   8
#define	VAR_GB   7
#define	A_RED   0
#define	A_GREEN   1
#define	A_BLUE   2
#define	B   3

Typedefs
typedef struct tile	tile
typedef struct color_image	color_image

Functions
static color_image	new_color_image (int width, int height, int ch)
static void	free_color_image (color_image *img_p)
static float *	get_color_pixel (color_image img, size_t i)
static void	guided_filter_tiling (color_image imgg, gray_image img, gray_image img_out, tile target, const int w, const float eps, const float guide_weight, const float min, const float max)
static int	compute_tile_height (const int height, const int w)
static int	compute_tile_width (const int width, const int w)
void	guided_filter (const float *const guide, const float *const in, float *const out, const int width, const int height, const int ch, const int w, const float sqrt_eps, const float guide_weight, const float min, const float max)

Macro Definition Documentation

_mm_prefetch

#define _mm_prefetch	(		where,
			hint
	)

A_BLUE

#define A_BLUE   2

A_GREEN

#define A_GREEN   1

A_RED

#define A_RED   0

B

#define B   3

COV_B

#define COV_B   2

COV_G

#define COV_G   1

COV_R

#define COV_R   0

GF_TILE_SIZE

#define GF_TILE_SIZE   512

GUIDE_MEAN_B

#define GUIDE_MEAN_B   3

GUIDE_MEAN_G

#define GUIDE_MEAN_G   2

GUIDE_MEAN_R

#define GUIDE_MEAN_R   1

INP_MEAN

#define INP_MEAN   0

SIMD_FOR

#define SIMD_FOR   for

VAR_BB

#define VAR_BB   8

VAR_GB

#define VAR_GB   7

VAR_GG

#define VAR_GG   6

VAR_RB

#define VAR_RB   5

VAR_RG

#define VAR_RG   4

VAR_RR

#define VAR_RR   3

Typedef Documentation

color_image

typedef struct color_image color_image

tile

typedef struct tile tile

Function Documentation

compute_tile_height()

static int compute_tile_height ( const int  height, const int  w  )

static

References GF_TILE_SIZE, height, and max_i().

Referenced by guided_filter().

compute_tile_width()

static int compute_tile_width ( const int  width, const int  w  )

static

References GF_TILE_SIZE, max_i(), and width.

Referenced by guided_filter().

free_color_image()

static void free_color_image ( color_image *  img_p )

inlinestatic

References color_image::data, and dt_free_align.

Referenced by guided_filter_tiling().

get_color_pixel()

static float * get_color_pixel ( color_image  img, size_t  i  )

inlinestatic

References color_image::data, and color_image::stride.

Referenced by guided_filter_tiling().

guided_filter()

void guided_filter	(	const float *const	guide,
		const float *const	in,
		float *const	out,
		const int	width,
		const int	height,
		const int	ch,
		const int	w,
		const float	sqrt_eps,
		const float	guide_weight,
		const float	min,
		const float	max
	)

References compute_tile_height(), compute_tile_width(), eps, guided_filter_tiling(), height, min_i(), and width.

Referenced by _develop_blend_process_feather(), and process().

guided_filter_tiling()

static void guided_filter_tiling ( color_image  imgg, gray_image  img, gray_image  img_out, tile  target, const int  w, const float  eps, const float  guide_weight, const float  min, const float  max  )

static

References A_BLUE, A_GREEN, A_RED, B, BOXFILTER_KAHAN_SUM, COV_B, COV_G, COV_R, color_image::data, gray_image::data, dt_alloc_perthread_float(), dt_box_mean(), dt_box_mean_horizontal(), dt_box_mean_vertical(), dt_free_align, dt_get_perthread, eps, free_color_image(), get_color_pixel(), GUIDE_MEAN_B, GUIDE_MEAN_G, GUIDE_MEAN_R, height, color_image::height, INP_MEAN, tile::left, tile::lower, max_i(), min_i(), new_color_image(), tile::right, size, color_image::stride, tile::upper, VAR_BB, VAR_GB, VAR_GG, VAR_RB, VAR_RG, VAR_RR, width, color_image::width, and gray_image::width.

Referenced by guided_filter().

new_color_image()

static color_image new_color_image ( int  width, int  height, int  ch  )

inlinestatic

Todo:

: the code consuming color_image doesn't check if we actually allocated the buffer

References dt_alloc_align_float(), height, and width.

Referenced by guided_filter_tiling().