2 #include "imagestorage.h"
7 bool CvCascadeImageReader::create( const String _posFilename, const String _negFilename, Size _winSize )
9 return posReader.create(_posFilename) && negReader.create(_negFilename, _winSize);
12 CvCascadeImageReader::NegReader::NegReader()
14 src.create( 0, 0 , CV_8UC1 );
15 img.create( 0, 0, CV_8UC1 );
16 point = offset = Point( 0, 0 );
18 scaleFactor = 1.4142135623730950488016887242097F;
22 bool CvCascadeImageReader::NegReader::create( const String _filename, Size _winSize )
25 std::ifstream file(_filename.c_str());
26 if ( !file.is_open() )
29 size_t pos = _filename.rfind('\\');
31 if (pos == String::npos)
33 pos = _filename.rfind('/');
36 dirname = _filename.substr(0, pos) + dlmrt;
39 std::getline(file, str);
40 if (str.empty()) break;
41 if (str.at(0) == '#' ) continue; /* comment */
42 imgFilenames.push_back(dirname + str);
51 bool CvCascadeImageReader::NegReader::nextImg()
53 Point _offset = Point(0,0);
54 size_t count = imgFilenames.size();
55 for( size_t i = 0; i < count; i++ )
57 src = imread( imgFilenames[last++], 0 );
60 round += last / count;
61 round = round % (winSize.width * winSize.height);
64 _offset.x = min( (int)round % winSize.width, src.cols - winSize.width );
65 _offset.y = min( (int)round / winSize.width, src.rows - winSize.height );
66 if( !src.empty() && src.type() == CV_8UC1
67 && offset.x >= 0 && offset.y >= 0 )
72 return false; // no appropriate image
73 point = offset = _offset;
74 scale = max( ((float)winSize.width + point.x) / ((float)src.cols),
75 ((float)winSize.height + point.y) / ((float)src.rows) );
77 Size sz( (int)(scale*src.cols + 0.5F), (int)(scale*src.rows + 0.5F) );
78 resize( src, img, sz );
82 bool CvCascadeImageReader::NegReader::get( Mat& _img )
84 CV_Assert( !_img.empty() );
85 CV_Assert( _img.type() == CV_8UC1 );
86 CV_Assert( _img.cols == winSize.width );
87 CV_Assert( _img.rows == winSize.height );
93 Mat mat( winSize.height, winSize.width, CV_8UC1,
94 (void*)(img.data + point.y * img.step + point.x * img.elemSize()), img.step );
97 if( (int)( point.x + (1.0F + stepFactor ) * winSize.width ) < img.cols )
98 point.x += (int)(stepFactor * winSize.width);
102 if( (int)( point.y + (1.0F + stepFactor ) * winSize.height ) < img.rows )
103 point.y += (int)(stepFactor * winSize.height);
107 scale *= scaleFactor;
109 resize( src, img, Size( (int)(scale*src.cols), (int)(scale*src.rows) ) );
120 CvCascadeImageReader::PosReader::PosReader()
126 bool CvCascadeImageReader::PosReader::create( const String _filename )
130 file = fopen( _filename.c_str(), "rb" );
135 fread( &count, sizeof( count ), 1, file );
136 fread( &vecSize, sizeof( vecSize ), 1, file );
137 fread( &tmp, sizeof( tmp ), 1, file );
138 fread( &tmp, sizeof( tmp ), 1, file );
139 base = sizeof( count ) + sizeof( vecSize ) + 2*sizeof( tmp );
143 vec = (short*) cvAlloc( sizeof( *vec ) * vecSize );
148 bool CvCascadeImageReader::PosReader::get( Mat &_img )
150 CV_Assert( _img.rows * _img.cols == vecSize );
152 fread( &tmp, sizeof( tmp ), 1, file );
153 fread( vec, sizeof( vec[0] ), vecSize, file );
155 if( feof( file ) || last++ >= count )
158 for( int r = 0; r < _img.rows; r++ )
160 for( int c = 0; c < _img.cols; c++ )
161 _img.ptr(r)[c] = (uchar)vec[r * _img.cols + c];
166 void CvCascadeImageReader::PosReader::restart()
170 fseek( file, base, SEEK_SET );
173 CvCascadeImageReader::PosReader::~PosReader()