1 /*M///////////////////////////////////////////////////////////////////////////////////////
2 //
3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
4 //
5 // By downloading, copying, installing or using the software you agree to this license.
6 // If you do not agree to this license, do not download, install,
7 // copy or use the software.
8 //
9 //
10 // Intel License Agreement
11 // For Open Source Computer Vision Library
12 //
13 // Copyright (C) 2000, Intel Corporation, all rights reserved.
14 // Third party copyrights are property of their respective owners.
15 //
16 // Redistribution and use in source and binary forms, with or without modification,
17 // are permitted provided that the following conditions are met:
18 //
19 // * Redistribution's of source code must retain the above copyright notice,
20 // this list of conditions and the following disclaimer.
21 //
22 // * Redistribution's in binary form must reproduce the above copyright notice,
23 // this list of conditions and the following disclaimer in the documentation
24 // and/or other materials provided with the distribution.
25 //
26 // * The name of Intel Corporation may not be used to endorse or promote products
27 // derived from this software without specific prior written permission.
28 //
29 // This software is provided by the copyright holders and contributors "as is" and
30 // any express or implied warranties, including, but not limited to, the implied
31 // warranties of merchantability and fitness for a particular purpose are disclaimed.
32 // In no event shall the Intel Corporation or contributors be liable for any direct,
33 // indirect, incidental, special, exemplary, or consequential damages
34 // (including, but not limited to, procurement of substitute goods or services;
35 // loss of use, data, or profits; or business interruption) however caused
36 // and on any theory of liability, whether in contract, strict liability,
37 // or tort (including negligence or otherwise) arising in any way out of
38 // the use of this software, even if advised of the possibility of such damage.
39 //
40 //M*/
41 #include "_cvaux.h"
42
43 #define CV_MAX2( a, b ) ((a)>(b) ? (a) : (b))
44 #define CV_MIN2( a, b ) ((a)<(b) ? (a) : (b))
45
46 /****************************************************************************************\
47
48 create hand mask
49
50 \****************************************************************************************/
51
icvCreateHandMask8uC1R(CvSeq * numbers,uchar * image_mask,int step,CvSize size,CvRect * roi)52 static CvStatus icvCreateHandMask8uC1R(CvSeq * numbers,
53 uchar * image_mask, int step,
54 CvSize size, CvRect * roi )
55 {
56
57 CvSeqReader reader;
58 CvPoint pt;
59 int k_point;
60 int i_min, i_max, j_min, j_max;
61
62 if( numbers == NULL )
63 return CV_NULLPTR_ERR;
64
65 if( !CV_IS_SEQ_POINT_SET( numbers ))
66 return CV_BADFLAG_ERR;
67
68 i_max = j_max = 0;
69 i_min = size.height;
70 j_min = size.width;
71
72 cvStartReadSeq( numbers, &reader, 0 );
73
74 k_point = numbers->total;
75 assert( k_point > 0 );
76 if( k_point <= 0 )
77 return CV_BADSIZE_ERR;
78
79 memset( image_mask, 0, step * size.height );
80
81 while( k_point-- > 0 )
82 {
83 CV_READ_SEQ_ELEM( pt, reader );
84
85 i_min = CV_MIN2( i_min, pt.y );
86 i_max = CV_MAX2( i_max, pt.y );
87 j_min = CV_MIN2( j_min, pt.x );
88 j_max = CV_MAX2( j_max, pt.x );
89
90 *(image_mask + pt.y * step + pt.x) = 255;
91 }
92
93 roi->x = j_min;
94 roi->y = i_min;
95 roi->width = j_max - j_min + 1;
96 roi->height = i_max - i_min + 1;
97
98 return CV_OK;
99
100 }
101
102
103 /*F///////////////////////////////////////////////////////////////////////////////////////
104 // Name: cvCreateHandMask
105 // Purpose: creates hand mask image
106 // Context:
107 // Parameters:
108 // numbers - pointer to the input sequence of the point's indexes inside
109 // hand region
110 // img_mask - pointer to the result mask image
111 // roi - result hand mask ROI
112 //
113 // Notes:
114 //F*/
115 CV_IMPL void
cvCreateHandMask(CvSeq * numbers,IplImage * img_mask,CvRect * roi)116 cvCreateHandMask( CvSeq * numbers, IplImage * img_mask, CvRect * roi )
117 {
118 uchar *img_mask_data = 0;
119 int img_mask_step = 0;
120 CvSize img_mask_size;
121
122 CV_FUNCNAME( "cvCreateHandMask" );
123
124 __BEGIN__;
125
126 if( img_mask->depth != IPL_DEPTH_8U )
127 CV_ERROR( CV_BadDepth, cvUnsupportedFormat );
128
129 if( img_mask->nChannels != 1 )
130 CV_ERROR( CV_BadNumChannels, "output image have wrong number of channels" );
131
132 cvGetImageRawData( img_mask, &img_mask_data, &img_mask_step, &img_mask_size );
133
134 IPPI_CALL( icvCreateHandMask8uC1R( numbers, img_mask_data,
135 img_mask_step, img_mask_size, roi ));
136
137 __END__;
138 }
139