1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/*
* metapixel.h
*
* metapixel
*
* Copyright (C) 1997-2004 Mark Probst
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __METAPIXEL_H__
#define __METAPIXEL_H__
#include "readimage.h"
#define DEFAULT_WIDTH 64
#define DEFAULT_HEIGHT 64
#define DEFAULT_PREPARE_WIDTH 128
#define DEFAULT_PREPARE_HEIGHT 128
#define DEFAULT_CLASSIC_MIN_DISTANCE 5
#define DEFAULT_COLLAGE_MIN_DISTANCE 256
#define NUM_CHANNELS 3
#define IMAGE_SIZE 64
#define ROW_LENGTH (IMAGE_SIZE * NUM_CHANNELS)
#define SIGNIFICANT_COEFFS 40
#define NUM_COEFFS (NUM_CHANNELS * SIGNIFICANT_COEFFS)
#define NUM_INDEXES (IMAGE_SIZE * IMAGE_SIZE * NUM_CHANNELS * 2)
#define NUM_SUBPIXEL_ROWS_COLS 5
#define NUM_SUBPIXELS (NUM_SUBPIXEL_ROWS_COLS * NUM_SUBPIXEL_ROWS_COLS)
#define METRIC_WAVELET 1
#define METRIC_SUBPIXEL 2
#define SEARCH_LOCAL 1
#define SEARCH_GLOBAL 2
#define TABLES_FILENAME "tables.mxt"
typedef struct
{
int index;
float coeff;
} coefficient_with_index_t;
typedef unsigned short index_t;
typedef struct
{
index_t coeffs[NUM_COEFFS];
} search_coefficients_t;
typedef struct _position_t
{
int x, y;
struct _position_t *next;
} position_t;
typedef struct _metapixel_t
{
char *filename;
search_coefficients_t coeffs;
float means[NUM_CHANNELS];
unsigned char subpixels[NUM_SUBPIXELS * NUM_CHANNELS];
int flag;
unsigned char *data; /* only used if from an antimosaic or if benchmarking rendering */
int width, height; /* only valid if data != 0 */
int anti_x, anti_y; /* only used if from an antimosaic */
position_t *collage_positions; /* only used in collages */
struct _metapixel_t *next;
} metapixel_t;
typedef struct
{
metapixel_t *pixel;
float score;
} match_t;
typedef struct
{
int metawidth;
int metaheight;
match_t *matches;
} mosaic_t;
typedef struct
{
image_reader_t *image_reader;
int in_image_width;
int in_image_height;
int out_image_width;
int out_image_height;
int metawidth;
int metaheight;
int y;
int num_lines;
unsigned char *in_image_data;
} classic_reader_t;
typedef union
{
struct
{
search_coefficients_t coeffs;
float means[NUM_CHANNELS];
float sums[NUM_COEFFS];
} wavelet;
struct
{
unsigned char subpixels[NUM_SUBPIXELS * NUM_CHANNELS];
} subpixel;
} coeffs_t;
typedef struct
{
metapixel_t *pixel;
float score;
int x;
int y;
} global_match_t;
typedef struct _string_list_t
{
char *str;
struct _string_list_t *next;
} string_list_t;
typedef float(*compare_func_t)(coeffs_t*, metapixel_t*, float);
#endif
|
