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 * findpattern3.c
29 *
30 * We use pixGenerateSelBoundary() to generate the sels.
31 *
32 * This is set up with input parameters to work on feyn.tif.
33 *
34 * (1) We extract an "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
main(int argc,char ** argv)47 int main(int argc,
48 char **argv)
49 {
50 BOX *box;
51 PIX *pixs, *pixc, *pixp, *pixsel, *pixhmt;
52 PIX *pixd1, *pixd2, *pixd3;
53 SEL *selhm;
54 static char mainName[] = "findpattern3";
55
56 if (argc != 1)
57 return ERROR_INT(" Syntax: findpattern3", mainName, 1);
58
59 setLeptDebugOK(1);
60 lept_mkdir("lept/hmt");
61
62 /* -------------------------------------------- *
63 * Extract the pattern for a single character *
64 * ---------------------------------------------*/
65 pixs = pixRead("feyn.tif");
66 box = boxCreate(599, 1055, 18, 23);
67 pixc = pixClipRectangle(pixs, box, NULL);
68
69 /* Make a hit-miss sel */
70 selhm = pixGenerateSelBoundary(pixc, 1, 2, 2, 2, 1, 1, 0, 0, &pixp);
71
72 /* Display the sel */
73 pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
74 pixDisplay(pixsel, 200, 200);
75 pixWrite("/tmp/lept/hmt/pixsel1.png", pixsel, IFF_PNG);
76
77 /* Use the Sel to find all instances in the page */
78 startTimer();
79 pixhmt = pixHMT(NULL, pixs, selhm);
80 fprintf(stderr, "Time to find patterns = %7.3f\n", stopTimer());
81
82 /* Color each instance at full res */
83 pixd1 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
84 selhm->cy, 0x0000ff00, 1.0, 5);
85 pixWrite("/tmp/lept/hmt/pixd11.png", pixd1, IFF_PNG);
86
87 /* Color each instance at 0.3 scale */
88 pixd2 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
89 selhm->cy, 0x0000ff00, 0.5, 5);
90 pixWrite("/tmp/lept/hmt/pixd12.png", pixd2, IFF_PNG);
91
92 /* Remove each instance from the input image */
93 pixd3 = pixCopy(NULL, pixs);
94 pixRemoveMatchedPattern(pixd3, pixp, pixhmt, selhm->cx,
95 selhm->cy, 1);
96 pixWrite("/tmp/lept/hmt/pixr1.png", pixd3, IFF_PNG);
97
98 boxDestroy(&box);
99 selDestroy(&selhm);
100 pixDestroy(&pixc);
101 pixDestroy(&pixp);
102 pixDestroy(&pixsel);
103 pixDestroy(&pixhmt);
104 pixDestroy(&pixd1);
105 pixDestroy(&pixd2);
106 pixDestroy(&pixd3);
107
108
109 /* -------------------------------------------- *
110 * Extract the pattern for a word *
111 * ---------------------------------------------*/
112 box = boxCreate(208, 872, 130, 35);
113 pixc = pixClipRectangle(pixs, box, NULL);
114
115 /* Make a hit-miss sel */
116 selhm = pixGenerateSelBoundary(pixc, 2, 2, 1, 4, 1, 1, 0, 0, &pixp);
117
118 /* Display the sel */
119 pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
120 pixDisplay(pixsel, 200, 200);
121 pixWrite("/tmp/lept/hmt/pixsel2.png", pixsel, IFF_PNG);
122
123 /* Use the Sel to find all instances in the page */
124 startTimer();
125 pixhmt = pixHMT(NULL, pixs, selhm);
126 fprintf(stderr, "Time to find word patterns = %7.3f\n", stopTimer());
127
128 /* Color each instance at full res */
129 pixd1 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
130 selhm->cy, 0x0000ff00, 1.0, 5);
131 pixWrite("/tmp/lept/hmt/pixd21.png", pixd1, IFF_PNG);
132
133 /* Color each instance at 0.3 scale */
134 pixd2 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
135 selhm->cy, 0x0000ff00, 0.5, 5);
136 pixWrite("/tmp/lept/hmt/pixd22.png", pixd2, IFF_PNG);
137
138 /* Remove each instance from the input image */
139 pixd3 = pixCopy(NULL, pixs);
140 pixRemoveMatchedPattern(pixd3, pixp, pixhmt, selhm->cx,
141 selhm->cy, 1);
142 pixWrite("/tmp/lept/hmt/pixr2.png", pixd3, IFF_PNG);
143
144 selDestroy(&selhm);
145 boxDestroy(&box);
146 pixDestroy(&pixc);
147 pixDestroy(&pixp);
148 pixDestroy(&pixsel);
149 pixDestroy(&pixhmt);
150 pixDestroy(&pixd1);
151 pixDestroy(&pixd2);
152 pixDestroy(&pixd3);
153 pixDestroy(&pixs);
154 return 0;
155 }
156
157
