1 /*====================================================================*
2 - Copyright (C) 2001 Leptonica. All rights reserved.
3 -
4 - Redistribution and use in source and binary forms, with or without
5 - modification, are permitted provided that the following conditions
6 - are met:
7 - 1. Redistributions of source code must retain the above copyright
8 - notice, this list of conditions and the following disclaimer.
9 - 2. Redistributions in binary form must reproduce the above
10 - copyright notice, this list of conditions and the following
11 - disclaimer in the documentation and/or other materials
12 - provided with the distribution.
13 -
14 - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
15 - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
16 - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
17 - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
18 - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 - OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
23 - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24 - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *====================================================================*/
26
27 /*
28 * findpattern2.c
29 *
30 * We use pixGenerateSelRandom() to generate the sels.
31 *
32 * This is set up with input parameters to work on feyn.tif.
33 *
34 * (1) We extract a "e" bitmap, generate a hit-miss sel, and
35 * then produce several 4 bpp colormapped renditions,
36 * with the pattern either removed or highlighted.
37 *
38 * (2) We do the same with the word "Caltech".
39 */
40
41 #include "allheaders.h"
42
43 /* for pixDisplayHitMissSel() */
44 static const l_uint32 HitColor = 0x33aa4400;
45 static const l_uint32 MissColor = 0xaa44bb00;
46
47
main(int argc,char ** argv)48 int main(int argc,
49 char **argv)
50 {
51 BOX *box;
52 PIX *pixs, *pixc, *pixp, *pixsel, *pixhmt;
53 PIX *pixd1, *pixd2, *pixd3;
54 SEL *selhm;
55 static char mainName[] = "findpattern2";
56
57 if (argc != 1)
58 return ERROR_INT(" Syntax: findpattern2", mainName, 1);
59
60 setLeptDebugOK(1);
61 lept_mkdir("lept/hmt");
62
63 /* -------------------------------------------- *
64 * Extract the pattern for a single character *
65 * ---------------------------------------------*/
66 pixs = pixRead("feyn.tif");
67 box = boxCreate(599, 1055, 18, 23);
68 pixc = pixClipRectangle(pixs, box, NULL);
69
70 /* Make a hit-miss sel */
71 selhm = pixGenerateSelRandom(pixc, 0.3, 0.2, 1, 6, 6, 0, 0, &pixp);
72
73 /* Display the sel */
74 pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
75 pixDisplay(pixsel, 200, 200);
76 pixWrite("/tmp/lept/hmt/pixsel1.png", pixsel, IFF_PNG);
77
78 /* Use the Sel to find all instances in the page */
79 startTimer();
80 pixhmt = pixHMT(NULL, pixs, selhm);
81 fprintf(stderr, "Time to find patterns = %7.3f\n", stopTimer());
82
83 /* Color each instance at full res */
84 pixd1 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
85 selhm->cy, 0x0000ff00, 1.0, 5);
86 pixWrite("/tmp/lept/hmt/pixd11.png", pixd1, IFF_PNG);
87
88 /* Color each instance at 0.3 scale */
89 pixd2 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
90 selhm->cy, 0x0000ff00, 0.5, 5);
91 pixWrite("/tmp/lept/hmt/junkpixd12.png", pixd2, IFF_PNG);
92
93 /* Remove each instance from the input image */
94 pixd3 = pixCopy(NULL, pixs);
95 pixRemoveMatchedPattern(pixd3, pixp, pixhmt, selhm->cx,
96 selhm->cy, 1);
97 pixWrite("/tmp/lept/hmt/pixr1.png", pixd3, IFF_PNG);
98
99 boxDestroy(&box);
100 selDestroy(&selhm);
101 pixDestroy(&pixc);
102 pixDestroy(&pixp);
103 pixDestroy(&pixsel);
104 pixDestroy(&pixhmt);
105 pixDestroy(&pixd1);
106 pixDestroy(&pixd2);
107 pixDestroy(&pixd3);
108
109
110 /* -------------------------------------------- *
111 * Extract the pattern for a word *
112 * ---------------------------------------------*/
113 box = boxCreate(208, 872, 130, 35);
114 pixc = pixClipRectangle(pixs, box, NULL);
115
116 /* Make a hit-miss sel */
117 selhm = pixGenerateSelRandom(pixc, 1.0, 0.05, 2, 6, 6, 0, 0, &pixp);
118
119 /* Display the sel */
120 pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
121 pixDisplay(pixsel, 200, 200);
122 pixWrite("/tmp/lept/hmt/pixsel2.png", pixsel, IFF_PNG);
123
124 /* Use the Sel to find all instances in the page */
125 startTimer();
126 pixhmt = pixHMT(NULL, pixs, selhm);
127 fprintf(stderr, "Time to find word patterns = %7.3f\n", stopTimer());
128
129 /* Color each instance at full res */
130 pixd1 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
131 selhm->cy, 0x0000ff00, 1.0, 5);
132 pixWrite("/tmp/lept/hmt/pixd21.png", pixd1, IFF_PNG);
133
134 /* Color each instance at 0.3 scale */
135 pixd2 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
136 selhm->cy, 0x0000ff00, 0.5, 5);
137 pixWrite("/tmp/lept/hmt/pixd22.png", pixd2, IFF_PNG);
138
139 /* Remove each instance from the input image */
140 pixd3 = pixCopy(NULL, pixs);
141 pixRemoveMatchedPattern(pixd3, pixp, pixhmt, selhm->cx,
142 selhm->cy, 1);
143 pixWrite("/tmp/lept/hmt/pixr2.png", pixd3, IFF_PNG);
144
145 selDestroy(&selhm);
146 boxDestroy(&box);
147 pixDestroy(&pixc);
148 pixDestroy(&pixp);
149 pixDestroy(&pixsel);
150 pixDestroy(&pixhmt);
151 pixDestroy(&pixd1);
152 pixDestroy(&pixd2);
153 pixDestroy(&pixd3);
154 pixDestroy(&pixs);
155 return 0;
156 }
157
158
