Remove all using directives for STL namespace and members

Made all STL usages explicit to be able automatically find all usages of
particular class or function.

(cherry picked from commit 2a6fb286)
(only cherry picked "apps/trancascade")

apps/traincascade/HOGfeatures.cpp

@@ -4,6 +4,7 @@
 #include "HOGfeatures.h"
 #include "cascadeclassifier.h"
 
+using namespace std;
 
 CvHOGFeatureParams::CvHOGFeatureParams()
 {

apps/traincascade/HOGfeatures.h

@@ -26,13 +26,13 @@ public:
     virtual void writeFeatures( FileStorage &fs, const Mat& featureMap ) const;
 protected:
     virtual void generateFeatures();
-    virtual void integralHistogram(const Mat &img, vector<Mat> &histogram, Mat &norm, int nbins) const;
+    virtual void integralHistogram(const Mat &img, std::vector<Mat> &histogram, Mat &norm, int nbins) const;
     class Feature
     {
     public:
         Feature();
         Feature( int offset, int x, int y, int cellW, int cellH );
-        float calc( const vector<Mat> &_hists, const Mat &_normSum, size_t y, int featComponent ) const;
+        float calc( const std::vector<Mat> &_hists, const Mat &_normSum, size_t y, int featComponent ) const;
         void write( FileStorage &fs ) const;
         void write( FileStorage &fs, int varIdx ) const;
 
@@ -43,10 +43,10 @@ protected:
             int p0, p1, p2, p3;
         } fastRect[N_CELLS];
     };
-    vector<Feature> features;
+    std::vector<Feature> features;
 
     Mat normSum; //for nomalization calculation (L1 or L2)
-    vector<Mat> hist;
+    std::vector<Mat> hist;
 };
 
 inline float CvHOGEvaluator::operator()(int varIdx, int sampleIdx) const
@@ -57,7 +57,7 @@ inline float CvHOGEvaluator::operator()(int varIdx, int sampleIdx) const
     return features[featureIdx].calc( hist, normSum, sampleIdx, componentIdx);
 }
 
-inline float CvHOGEvaluator::Feature::calc( const vector<Mat>& _hists, const Mat& _normSum, size_t y, int featComponent ) const
+inline float CvHOGEvaluator::Feature::calc( const std::vector<Mat>& _hists, const Mat& _normSum, size_t y, int featComponent ) const
 {
     float normFactor;
     float res;

apps/traincascade/boost.cpp

@@ -160,10 +160,10 @@ CvCascadeBoostParams::CvCascadeBoostParams( int _boostType,
 
 void CvCascadeBoostParams::write( FileStorage &fs ) const
 {
-    String boostTypeStr = boost_type == CvBoost::DISCRETE ? CC_DISCRETE_BOOST :
+    string boostTypeStr = boost_type == CvBoost::DISCRETE ? CC_DISCRETE_BOOST :
                           boost_type == CvBoost::REAL ? CC_REAL_BOOST :
                           boost_type == CvBoost::LOGIT ? CC_LOGIT_BOOST :
-                          boost_type == CvBoost::GENTLE ? CC_GENTLE_BOOST : String();
+                          boost_type == CvBoost::GENTLE ? CC_GENTLE_BOOST : string();
     CV_Assert( !boostTypeStr.empty() );
     fs << CC_BOOST_TYPE << boostTypeStr;
     fs << CC_MINHITRATE << minHitRate;
@@ -175,7 +175,7 @@ void CvCascadeBoostParams::write( FileStorage &fs ) const
 
 bool CvCascadeBoostParams::read( const FileNode &node )
 {
-    String boostTypeStr;
+    string boostTypeStr;
     FileNode rnode = node[CC_BOOST_TYPE];
     rnode >> boostTypeStr;
     boost_type = !boostTypeStr.compare( CC_DISCRETE_BOOST ) ? CvBoost::DISCRETE :
@@ -213,10 +213,10 @@ void CvCascadeBoostParams::printDefaults() const
 
 void CvCascadeBoostParams::printAttrs() const
 {
-    String boostTypeStr = boost_type == CvBoost::DISCRETE ? CC_DISCRETE_BOOST :
+    string boostTypeStr = boost_type == CvBoost::DISCRETE ? CC_DISCRETE_BOOST :
                           boost_type == CvBoost::REAL ? CC_REAL_BOOST :
                           boost_type == CvBoost::LOGIT  ? CC_LOGIT_BOOST :
-                          boost_type == CvBoost::GENTLE ? CC_GENTLE_BOOST : String();
+                          boost_type == CvBoost::GENTLE ? CC_GENTLE_BOOST : string();
     CV_Assert( !boostTypeStr.empty() );
     cout << "boostType: " << boostTypeStr << endl;
     cout << "minHitRate: " << minHitRate << endl;
@@ -226,7 +226,7 @@ void CvCascadeBoostParams::printAttrs() const
     cout << "maxWeakCount: " << weak_count << endl;
 }
 
-bool CvCascadeBoostParams::scanAttr( const String prmName, const String val)
+bool CvCascadeBoostParams::scanAttr( const string prmName, const string val)
 {
     bool res = true;
 

apps/traincascade/boost.h

@@ -17,7 +17,7 @@ struct CvCascadeBoostParams : CvBoostParams
     bool read( const FileNode &node );
     virtual void printDefaults() const;
     virtual void printAttrs() const;
-    virtual bool scanAttr( const String prmName, const String val);
+    virtual bool scanAttr( const std::string prmName, const std::string val);
 };
 
 struct CvCascadeBoostTrainData : CvDTreeTrainData

apps/traincascade/cascadeclassifier.cpp

@@ -24,10 +24,10 @@ CvCascadeParams::CvCascadeParams( int _stageType, int _featureType ) : stageType
 
 void CvCascadeParams::write( FileStorage &fs ) const
 {
-    String stageTypeStr = stageType == BOOST ? CC_BOOST : String();
+    string stageTypeStr = stageType == BOOST ? CC_BOOST : string();
     CV_Assert( !stageTypeStr.empty() );
     fs << CC_STAGE_TYPE << stageTypeStr;
-    String featureTypeStr = featureType == CvFeatureParams::HAAR ? CC_HAAR :
+    string featureTypeStr = featureType == CvFeatureParams::HAAR ? CC_HAAR :
                             featureType == CvFeatureParams::LBP ? CC_LBP :
                             featureType == CvFeatureParams::HOG ? CC_HOG :
                             0;
@@ -41,7 +41,7 @@ bool CvCascadeParams::read( const FileNode &node )
 {
     if ( node.empty() )
         return false;
-    String stageTypeStr, featureTypeStr;
+    string stageTypeStr, featureTypeStr;
     FileNode rnode = node[CC_STAGE_TYPE];
     if ( !rnode.isString() )
         return false;
@@ -96,7 +96,7 @@ void CvCascadeParams::printAttrs() const
     cout << "sampleHeight: " << winSize.height << endl;
 }
 
-bool CvCascadeParams::scanAttr( const String prmName, const String val )
+bool CvCascadeParams::scanAttr( const string prmName, const string val )
 {
     bool res = true;
     if( !prmName.compare( "-stageType" ) )
@@ -126,9 +126,9 @@ bool CvCascadeParams::scanAttr( const String prmName, const String val )
 
 //---------------------------- CascadeClassifier --------------------------------------
 
-bool CvCascadeClassifier::train( const String _cascadeDirName,
-                                const String _posFilename,
-                                const String _negFilename,
+bool CvCascadeClassifier::train( const string _cascadeDirName,
+                                const string _posFilename,
+                                const string _negFilename,
                                 int _numPos, int _numNeg,
                                 int _precalcValBufSize, int _precalcIdxBufSize,
                                 int _numStages,
@@ -399,7 +399,7 @@ bool CvCascadeClassifier::readStages( const FileNode &node)
 #define ICV_HAAR_PARENT_NAME            "parent"
 #define ICV_HAAR_NEXT_NAME              "next"
 
-void CvCascadeClassifier::save( const String filename, bool baseFormat )
+void CvCascadeClassifier::save( const string filename, bool baseFormat )
 {
     FileStorage fs( filename, FileStorage::WRITE );
 
@@ -491,7 +491,7 @@ void CvCascadeClassifier::save( const String filename, bool baseFormat )
     fs << "}";
 }
 
-bool CvCascadeClassifier::load( const String cascadeDirName )
+bool CvCascadeClassifier::load( const string cascadeDirName )
 {
     FileStorage fs( cascadeDirName + CC_PARAMS_FILENAME, FileStorage::READ );
     if ( !fs.isOpened() )

apps/traincascade/cascadeclassifier.h

@@ -77,7 +77,7 @@ public:
 
     void printDefaults() const;
     void printAttrs() const;
-    bool scanAttr( const String prmName, const String val );
+    bool scanAttr( const std::string prmName, const std::string val );
 
     int stageType;
     int featureType;
@@ -87,9 +87,9 @@ public:
 class CvCascadeClassifier
 {
 public:
-    bool train( const String _cascadeDirName,
-                const String _posFilename,
-                const String _negFilename,
+    bool train( const std::string _cascadeDirName,
+                const std::string _posFilename,
+                const std::string _negFilename,
                 int _numPos, int _numNeg,
                 int _precalcValBufSize, int _precalcIdxBufSize,
                 int _numStages,
@@ -99,8 +99,8 @@ public:
                 bool baseFormatSave = false );
 private:
     int predict( int sampleIdx );
-    void save( const String cascadeDirName, bool baseFormat = false );
-    bool load( const String cascadeDirName );
+    void save( const std::string cascadeDirName, bool baseFormat = false );
+    bool load( const std::string cascadeDirName );
     bool updateTrainingSet( double& acceptanceRatio );
     int fillPassedSamples( int first, int count, bool isPositive, int64& consumed );
 
@@ -117,7 +117,7 @@ private:
     Ptr<CvCascadeBoostParams> stageParams;
 
     Ptr<CvFeatureEvaluator> featureEvaluator;
-    vector< Ptr<CvCascadeBoost> > stageClassifiers;
+    std::vector< Ptr<CvCascadeBoost> > stageClassifiers;
     CvCascadeImageReader imgReader;
     int numStages, curNumSamples;
     int numPos, numNeg;

apps/traincascade/features.cpp

@@ -24,7 +24,7 @@ CvParams::CvParams() : name( "params" ) {}
 void CvParams::printDefaults() const
 { cout << "--" << name << "--" << endl; }
 void CvParams::printAttrs() const {}
-bool CvParams::scanAttr( const String, const String ) { return false; }
+bool CvParams::scanAttr( const string, const string ) { return false; }
 
 
 //---------------------------- FeatureParams --------------------------------------

apps/traincascade/haarfeatures.cpp

@@ -25,9 +25,9 @@ void CvHaarFeatureParams::init( const CvFeatureParams& fp )
 void CvHaarFeatureParams::write( FileStorage &fs ) const
 {
     CvFeatureParams::write( fs );
-    String modeStr = mode == BASIC ? CC_MODE_BASIC :
+    string modeStr = mode == BASIC ? CC_MODE_BASIC :
                      mode == CORE ? CC_MODE_CORE :
-                     mode == ALL ? CC_MODE_ALL : String();
+                     mode == ALL ? CC_MODE_ALL : string();
     CV_Assert( !modeStr.empty() );
     fs << CC_MODE << modeStr;
 }
@@ -40,7 +40,7 @@ bool CvHaarFeatureParams::read( const FileNode &node )
     FileNode rnode = node[CC_MODE];
     if( !rnode.isString() )
         return false;
-    String modeStr;
+    string modeStr;
     rnode >> modeStr;
     mode = !modeStr.compare( CC_MODE_BASIC ) ? BASIC :
            !modeStr.compare( CC_MODE_CORE ) ? CORE :
@@ -58,13 +58,13 @@ void CvHaarFeatureParams::printDefaults() const
 void CvHaarFeatureParams::printAttrs() const
 {
     CvFeatureParams::printAttrs();
-    String mode_str = mode == BASIC ? CC_MODE_BASIC :
+    string mode_str = mode == BASIC ? CC_MODE_BASIC :
                        mode == CORE ? CC_MODE_CORE :
                        mode == ALL ? CC_MODE_ALL : 0;
     cout << "mode: " <<  mode_str << endl;
 }
 
-bool CvHaarFeatureParams::scanAttr( const String prmName, const String val)
+bool CvHaarFeatureParams::scanAttr( const string prmName, const string val)
 {
     if ( !CvFeatureParams::scanAttr( prmName, val ) )
     {

apps/traincascade/haarfeatures.h

@@ -23,7 +23,7 @@ public:
 
     virtual void printDefaults() const;
     virtual void printAttrs() const;
-    virtual bool scanAttr( const String prm, const String val);
+    virtual bool scanAttr( const std::string prm, const std::string val);
 
     int mode;
 };
@@ -64,7 +64,7 @@ protected:
         } fastRect[CV_HAAR_FEATURE_MAX];
     };
 
-    vector<Feature> features;
+    std::vector<Feature> features;
     Mat  sum;         /* sum images (each row represents image) */
     Mat  tilted;      /* tilted sum images (each row represents image) */
     Mat  normfactor;  /* normalization factor */

apps/traincascade/imagestorage.cpp

@@ -7,7 +7,9 @@
 #include <iostream>
 #include <fstream>
 
-bool CvCascadeImageReader::create( const String _posFilename, const String _negFilename, Size _winSize )
+using namespace std;
+
+bool CvCascadeImageReader::create( const string _posFilename, const string _negFilename, Size _winSize )
 {
     return posReader.create(_posFilename) && negReader.create(_negFilename, _winSize);
 }
@@ -22,21 +24,21 @@ CvCascadeImageReader::NegReader::NegReader()
     stepFactor  = 0.5F;
 }
 
-bool CvCascadeImageReader::NegReader::create( const String _filename, Size _winSize )
+bool CvCascadeImageReader::NegReader::create( const string _filename, Size _winSize )
 {
-    String dirname, str;
+    string dirname, str;
     std::ifstream file(_filename.c_str());
     if ( !file.is_open() )
         return false;
 
     size_t pos = _filename.rfind('\\');
     char dlmrt = '\\';
-    if (pos == String::npos)
+    if (pos == string::npos)
     {
         pos = _filename.rfind('/');
         dlmrt = '/';
     }
-    dirname = pos == String::npos ? "" : _filename.substr(0, pos) + dlmrt;
+    dirname = pos == string::npos ? "" : _filename.substr(0, pos) + dlmrt;
     while( !file.eof() )
     {
         std::getline(file, str);
@@ -64,8 +66,8 @@ bool CvCascadeImageReader::NegReader::nextImg()
         round = round % (winSize.width * winSize.height);
         last %= count;
 
-        _offset.x = min( (int)round % winSize.width, src.cols - winSize.width );
-        _offset.y = min( (int)round / winSize.width, src.rows - winSize.height );
+        _offset.x = std::min( (int)round % winSize.width, src.cols - winSize.width );
+        _offset.y = std::min( (int)round / winSize.width, src.rows - winSize.height );
         if( !src.empty() && src.type() == CV_8UC1
                 && offset.x >= 0 && offset.y >= 0 )
             break;
@@ -126,7 +128,7 @@ CvCascadeImageReader::PosReader::PosReader()
     vec = 0;
 }
 
-bool CvCascadeImageReader::PosReader::create( const String _filename )
+bool CvCascadeImageReader::PosReader::create( const string _filename )
 {
     if ( file )
         fclose( file );

apps/traincascade/imagestorage.h

@@ -8,7 +8,7 @@ using namespace cv;
 class CvCascadeImageReader
 {
 public:
-    bool create( const String _posFilename, const String _negFilename, Size _winSize );
+    bool create( const std::string _posFilename, const std::string _negFilename, Size _winSize );
     void restart() { posReader.restart(); }
     bool getNeg(Mat &_img) { return negReader.get( _img ); }
     bool getPos(Mat &_img) { return posReader.get( _img ); }
@@ -19,7 +19,7 @@ private:
     public:
         PosReader();
         virtual ~PosReader();
-        bool create( const String _filename );
+        bool create( const std::string _filename );
         bool get( Mat &_img );
         void restart();
 
@@ -35,12 +35,12 @@ private:
     {
     public:
         NegReader();
-        bool create( const String _filename, Size _winSize );
+        bool create( const std::string _filename, Size _winSize );
         bool get( Mat& _img );
         bool nextImg();
 
         Mat     src, img;
-        vector<String> imgFilenames;
+        std::vector<std::string> imgFilenames;
         Point   offset, point;
         float   scale;
         float   scaleFactor;

apps/traincascade/lbpfeatures.h

@@ -34,7 +34,7 @@ protected:
         Rect rect;
         int p[16];
     };
-    vector<Feature> features;
+    std::vector<Feature> features;
 
     Mat sum;
 };

apps/traincascade/traincascade.cpp

@@ -9,7 +9,7 @@ using namespace std;
 int main( int argc, char* argv[] )
 {
     CvCascadeClassifier classifier;
-    String cascadeDirName, vecName, bgName;
+    string cascadeDirName, vecName, bgName;
     int numPos    = 2000;
     int numNeg    = 1000;
     int numStages = 20;

apps/traincascade/traincascade_features.h

@@ -33,7 +33,7 @@
 float calcNormFactor( const Mat& sum, const Mat& sqSum );
 
 template<class Feature>
-void _writeFeatures( const vector<Feature> features, FileStorage &fs, const Mat& featureMap )
+void _writeFeatures( const std::vector<Feature> features, FileStorage &fs, const Mat& featureMap )
 {
     fs << FEATURES << "[";
     const Mat_<int>& featureMap_ = (const Mat_<int>&)featureMap;
@@ -58,8 +58,8 @@ public:
     // from|to screen
     virtual void printDefaults() const;
     virtual void printAttrs() const;
-    virtual bool scanAttr( const String prmName, const String val );
-    String name;
+    virtual bool scanAttr( const std::string prmName, const std::string val );
+    std::string name;
 };
 
 class CvFeatureParams : public CvParams