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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* Top-level fast binary morphology with auto-generated sels
*
--- * PIX *pixMorphDwa_*()
--- * PIX *pixFMorphopGen_*()
*/
#include <stdio.h>
#include <string.h>
#include "allheaders.h"
--- This file is: morphtemplate1.txt
---
--- We need to include these prototypes:
--- PIX *pixMorphDwa_*(PIX *pixd, PIX *pixs, l_int32 operation,
--- char *selname);
--- PIX *pixFMorphopGen_*(PIX *pixd, PIX *pixs, l_int32 operation,
--- char *selname);
--- l_int32 fmorphopgen_low_*(l_uint32 *datad, l_int32 w, l_int32 h,
--- l_int32 wpld, l_uint32 *datas,
--- l_int32 wpls, l_int32 index);
---
--- We need to input two static globals here:
--- static l_int32 NUM_SELS_GENERATED = <some number>;
--- static char *SEL_NAMES[] = {"<string1>", "<string2>", ...};
/*
--- * pixMorphDwa_*()
*
* Input: pixd (usual 3 choices: null, == pixs, != pixs)
* pixs (1 bpp)
* operation (L_MORPH_DILATE, L_MORPH_ERODE,
* L_MORPH_OPEN, L_MORPH_CLOSE)
* sel name
* Return: pixd
*
* Notes:
* (1) This simply adds a border, calls the appropriate
* pixFMorphopGen_*(), and removes the border.
* See the notes for that function.
* (2) The size of the border depends on the operation
* and the boundary conditions.
*/
PIX *
--- pixMorphDwa_*(PIX *pixd,
PIX *pixs,
l_int32 operation,
char *selname)
{
l_int32 bordercolor, bordersize;
PIX *pixt1, *pixt2, *pixt3;
--- PROCNAME("pixMorpDwa_*");
if (!pixs)
return (PIX *)ERROR_PTR("pixs not defined", procName, pixd);
if (pixGetDepth(pixs) != 1)
return (PIX *)ERROR_PTR("pixs must be 1 bpp", procName, pixd);
/* Set the border size */
bordercolor = getMorphBorderPixelColor(L_MORPH_ERODE, 1);
bordersize = 32;
if (bordercolor == 0 && operation == L_MORPH_CLOSE)
bordersize += 32;
pixt1 = pixAddBorder(pixs, bordersize, 0);
--- pixt2 = pixFMorphopGen_*(NULL, pixt1, operation, selname);
pixt3 = pixRemoveBorder(pixt2, bordersize);
pixDestroy(&pixt1);
pixDestroy(&pixt2);
if (!pixd)
return pixt3;
pixCopy(pixd, pixt3);
pixDestroy(&pixt3);
return pixd;
}
/*
--- * pixFMorphopGen_*()
*
* Input: pixd (usual 3 choices: null, == pixs, != pixs)
* pixs (1 bpp)
* operation (L_MORPH_DILATE, L_MORPH_ERODE,
* L_MORPH_OPEN, L_MORPH_CLOSE)
* sel name
* Return: pixd
*
* Notes:
* (1) This is a dwa operation, and the Sels must be limited in
* size to not more than 31 pixels about the origin.
* (2) A border of appropriate size (32 pixels, or 64 pixels
* for safe closing with asymmetric b.c.) must be added before
* this function is called.
* (3) This handles all required setting of the border pixels
* before erosion and dilation.
* (4) The closing operation is safe; no pixels can be removed
* near the boundary.
*/
PIX *
--- pixFMorphopGen_*(PIX *pixd,
PIX *pixs,
l_int32 operation,
char *selname)
{
l_int32 i, index, found, w, h, wpls, wpld, bordercolor, erodeop, borderop;
l_uint32 *datad, *datas, *datat;
PIX *pixt;
--- PROCNAME("pixFMorphopGen_*");
if (!pixs)
return (PIX *)ERROR_PTR("pixs not defined", procName, pixd);
if (pixGetDepth(pixs) != 1)
return (PIX *)ERROR_PTR("pixs must be 1 bpp", procName, pixd);
/* Get boundary colors to use */
bordercolor = getMorphBorderPixelColor(L_MORPH_ERODE, 1);
if (bordercolor == 1)
erodeop = PIX_SET;
else
erodeop = PIX_CLR;
found = FALSE;
for (i = 0; i < NUM_SELS_GENERATED; i++) {
if (strcmp(selname, SEL_NAMES[i]) == 0) {
found = TRUE;
index = 2 * i;
break;
}
}
if (found == FALSE)
return (PIX *)ERROR_PTR("sel index not found", procName, pixd);
if (!pixd) {
if ((pixd = pixCreateTemplate(pixs)) == NULL)
return (PIX *)ERROR_PTR("pixd not made", procName, NULL);
}
else /* for in-place or pre-allocated */
pixResizeImageData(pixd, pixs);
wpls = pixGetWpl(pixs);
wpld = pixGetWpl(pixd);
/* The images must be surrounded, in advance, with a border of
* size 32 pixels (or 64, for closing), that we'll read from.
* Fabricate a "proper" image as the subimage within the 32
* pixel border, having the following parameters: */
w = pixGetWidth(pixs) - 64;
h = pixGetHeight(pixs) - 64;
datas = pixGetData(pixs) + 32 * wpls + 1;
datad = pixGetData(pixd) + 32 * wpld + 1;
if (operation == L_MORPH_DILATE || operation == L_MORPH_ERODE) {
borderop = PIX_CLR;
if (operation == L_MORPH_ERODE) {
borderop = erodeop;
index++;
}
if (pixd == pixs) { /* in-place; generate a temp image */
if ((pixt = pixCopy(NULL, pixs)) == NULL)
return (PIX *)ERROR_PTR("pixt not made", procName, pixd);
datat = pixGetData(pixt) + 32 * wpls + 1;
pixSetOrClearBorder(pixt, 32, 32, 32, 32, borderop);
--- fmorphopgen_low_*(datad, w, h, wpld, datat, wpls, index);
pixDestroy(&pixt);
}
else { /* not in-place */
pixSetOrClearBorder(pixs, 32, 32, 32, 32, borderop);
--- fmorphopgen_low_*(datad, w, h, wpld, datas, wpls, index);
}
}
else { /* opening or closing; generate a temp image */
if ((pixt = pixCreateTemplate(pixs)) == NULL)
return (PIX *)ERROR_PTR("pixt not made", procName, pixd);
datat = pixGetData(pixt) + 32 * wpls + 1;
if (operation == L_MORPH_OPEN) {
pixSetOrClearBorder(pixs, 32, 32, 32, 32, erodeop);
--- fmorphopgen_low_*(datat, w, h, wpls, datas, wpls, index + 1);
pixSetOrClearBorder(pixt, 32, 32, 32, 32, PIX_CLR);
--- fmorphopgen_low_*(datad, w, h, wpld, datat, wpls, index);
}
else { /* closing */
pixSetOrClearBorder(pixs, 32, 32, 32, 32, PIX_CLR);
--- fmorphopgen_low_*(datat, w, h, wpls, datas, wpls, index);
pixSetOrClearBorder(pixt, 32, 32, 32, 32, erodeop);
--- fmorphopgen_low_*(datad, w, h, wpld, datat, wpls, index + 1);
}
pixDestroy(&pixt);
}
return pixd;
}
|
