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187 lines
5.4 KiB
C++
187 lines
5.4 KiB
C++
#include "opencv2/core.hpp"
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#include "opencv2/core/core_c.h"
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#include "opencv2/imgproc.hpp"
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#include "opencv2/imgcodecs.hpp"
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#include "imagestorage.h"
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#include <stdio.h>
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#include <iostream>
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#include <fstream>
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using namespace std;
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using namespace cv;
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bool CvCascadeImageReader::create( const string _posFilename, const string _negFilename, Size _winSize )
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{
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return posReader.create(_posFilename) && negReader.create(_negFilename, _winSize);
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}
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CvCascadeImageReader::NegReader::NegReader()
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{
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src.create( 0, 0 , CV_8UC1 );
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img.create( 0, 0, CV_8UC1 );
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point = offset = Point( 0, 0 );
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scale = 1.0F;
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scaleFactor = 1.4142135623730950488016887242097F;
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stepFactor = 0.5F;
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}
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bool CvCascadeImageReader::NegReader::create( const string _filename, Size _winSize )
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{
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string str;
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std::ifstream file(_filename.c_str());
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if ( !file.is_open() )
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return false;
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while( !file.eof() )
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{
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std::getline(file, str);
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str.erase(str.find_last_not_of(" \n\r\t")+1);
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if (str.empty()) break;
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if (str.at(0) == '#' ) continue; /* comment */
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imgFilenames.push_back(str);
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}
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file.close();
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winSize = _winSize;
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last = round = 0;
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return true;
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}
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bool CvCascadeImageReader::NegReader::nextImg()
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{
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Point _offset = Point(0,0);
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size_t count = imgFilenames.size();
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for( size_t i = 0; i < count; i++ )
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{
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src = imread( imgFilenames[last++], 0 );
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if( src.empty() ){
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last %= count;
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continue;
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}
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round += last / count;
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round = round % (winSize.width * winSize.height);
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last %= count;
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_offset.x = std::min( (int)round % winSize.width, src.cols - winSize.width );
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_offset.y = std::min( (int)round / winSize.width, src.rows - winSize.height );
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if( !src.empty() && src.type() == CV_8UC1
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&& _offset.x >= 0 && _offset.y >= 0 )
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break;
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}
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if( src.empty() )
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return false; // no appropriate image
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point = offset = _offset;
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scale = max( ((float)winSize.width + point.x) / ((float)src.cols),
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((float)winSize.height + point.y) / ((float)src.rows) );
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Size sz( (int)(scale*src.cols + 0.5F), (int)(scale*src.rows + 0.5F) );
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resize( src, img, sz, 0, 0, INTER_LINEAR_EXACT );
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return true;
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}
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bool CvCascadeImageReader::NegReader::get( Mat& _img )
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{
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CV_Assert( !_img.empty() );
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CV_Assert( _img.type() == CV_8UC1 );
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CV_Assert( _img.cols == winSize.width );
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CV_Assert( _img.rows == winSize.height );
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if( img.empty() )
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if ( !nextImg() )
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return false;
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Mat mat( winSize.height, winSize.width, CV_8UC1,
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(void*)(img.ptr(point.y) + point.x * img.elemSize()), img.step );
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mat.copyTo(_img);
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if( (int)( point.x + (1.0F + stepFactor ) * winSize.width ) < img.cols )
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point.x += (int)(stepFactor * winSize.width);
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else
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{
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point.x = offset.x;
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if( (int)( point.y + (1.0F + stepFactor ) * winSize.height ) < img.rows )
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point.y += (int)(stepFactor * winSize.height);
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else
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{
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point.y = offset.y;
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scale *= scaleFactor;
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if( scale <= 1.0F )
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resize( src, img, Size( (int)(scale*src.cols), (int)(scale*src.rows) ), 0, 0, INTER_LINEAR_EXACT );
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else
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{
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if ( !nextImg() )
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return false;
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}
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}
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}
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return true;
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}
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CvCascadeImageReader::PosReader::PosReader()
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{
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file = 0;
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vec = 0;
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}
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bool CvCascadeImageReader::PosReader::create( const string _filename )
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{
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if ( file )
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fclose( file );
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file = fopen( _filename.c_str(), "rb" );
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if( !file )
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return false;
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short tmp = 0;
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if( fread( &count, sizeof( count ), 1, file ) != 1 ||
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fread( &vecSize, sizeof( vecSize ), 1, file ) != 1 ||
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fread( &tmp, sizeof( tmp ), 1, file ) != 1 ||
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fread( &tmp, sizeof( tmp ), 1, file ) != 1 )
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CV_Error_( CV_StsParseError, ("wrong file format for %s\n", _filename.c_str()) );
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base = sizeof( count ) + sizeof( vecSize ) + 2*sizeof( tmp );
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if( feof( file ) )
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return false;
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last = 0;
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vec = (short*) cvAlloc( sizeof( *vec ) * vecSize );
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CV_Assert( vec );
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return true;
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}
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bool CvCascadeImageReader::PosReader::get( Mat &_img )
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{
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CV_Assert( _img.rows * _img.cols == vecSize );
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uchar tmp = 0;
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size_t elements_read = fread( &tmp, sizeof( tmp ), 1, file );
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if( elements_read != 1 )
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CV_Error( CV_StsBadArg, "Can not get new positive sample. The most possible reason is "
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"insufficient count of samples in given vec-file.\n");
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elements_read = fread( vec, sizeof( vec[0] ), vecSize, file );
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if( elements_read != (size_t)(vecSize) )
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CV_Error( CV_StsBadArg, "Can not get new positive sample. Seems that vec-file has incorrect structure.\n");
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if( feof( file ) || last++ >= count )
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CV_Error( CV_StsBadArg, "Can not get new positive sample. vec-file is over.\n");
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for( int r = 0; r < _img.rows; r++ )
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{
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for( int c = 0; c < _img.cols; c++ )
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_img.ptr(r)[c] = (uchar)vec[r * _img.cols + c];
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}
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return true;
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}
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void CvCascadeImageReader::PosReader::restart()
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{
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CV_Assert( file );
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last = 0;
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fseek( file, base, SEEK_SET );
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}
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CvCascadeImageReader::PosReader::~PosReader()
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{
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if (file)
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fclose( file );
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cvFree( &vec );
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}
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