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Open Source Computer Vision Library
https://opencv.org/
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103 lines
3.6 KiB
103 lines
3.6 KiB
15 years ago
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#ifndef _OPENCV_FEATURES_H_
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#define _OPENCV_FEATURES_H_
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#include "imagestorage.h"
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#include "cxcore.h"
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#include "cv.h"
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#include "ml.h"
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#include <stdio.h>
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#define FEATURES "features"
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#define CV_SUM_OFFSETS( p0, p1, p2, p3, rect, step ) \
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/* (x, y) */ \
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(p0) = (rect).x + (step) * (rect).y; \
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/* (x + w, y) */ \
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(p1) = (rect).x + (rect).width + (step) * (rect).y; \
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/* (x + w, y) */ \
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(p2) = (rect).x + (step) * ((rect).y + (rect).height); \
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/* (x + w, y + h) */ \
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(p3) = (rect).x + (rect).width + (step) * ((rect).y + (rect).height);
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#define CV_TILTED_OFFSETS( p0, p1, p2, p3, rect, step ) \
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/* (x, y) */ \
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(p0) = (rect).x + (step) * (rect).y; \
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/* (x - h, y + h) */ \
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(p1) = (rect).x - (rect).height + (step) * ((rect).y + (rect).height);\
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/* (x + w, y + w) */ \
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(p2) = (rect).x + (rect).width + (step) * ((rect).y + (rect).width); \
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/* (x + w - h, y + w + h) */ \
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(p3) = (rect).x + (rect).width - (rect).height \
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+ (step) * ((rect).y + (rect).width + (rect).height);
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float calcNormFactor( const Mat& sum, const Mat& sqSum );
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template<class Feature>
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void _writeFeatures( const vector<Feature> features, FileStorage &fs, const Mat& featureMap )
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{
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fs << FEATURES << "[";
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const Mat_<int>& featureMap_ = (const Mat_<int>&)featureMap;
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for ( int fi = 0; fi < featureMap.cols; fi++ )
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if ( featureMap_(0, fi) >= 0 )
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{
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fs << "{";
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features[fi].write( fs );
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fs << "}";
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}
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fs << "]";
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}
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class CvParams
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{
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public:
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CvParams();
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virtual ~CvParams() {}
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// from|to file
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virtual void write( FileStorage &fs ) const = 0;
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virtual bool read( const FileNode &node ) = 0;
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// from|to screen
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virtual void printDefaults() const;
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virtual void printAttrs() const;
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virtual bool scanAttr( const String prmName, const String val );
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String name;
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};
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class CvFeatureParams : public CvParams
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{
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public:
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enum { HAAR = 0, LBP = 1 };
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CvFeatureParams();
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virtual void init( const CvFeatureParams& fp );
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virtual void write( FileStorage &fs ) const;
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virtual bool read( const FileNode &node );
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static Ptr<CvFeatureParams> create( int featureType );
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int maxCatCount; // 0 in case of numerical features
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};
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class CvFeatureEvaluator
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{
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public:
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virtual ~CvFeatureEvaluator() {}
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virtual void init(const CvFeatureParams *_featureParams,
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int _maxSampleCount, Size _winSize );
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virtual void setImage(const Mat& img, uchar clsLabel, int idx);
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virtual void writeFeatures( FileStorage &fs, const Mat& featureMap ) const = 0;
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virtual float operator()(int featureIdx, int sampleIdx) const = 0;
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static Ptr<CvFeatureEvaluator> create(int type);
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int getNumFeatures() const { return numFeatures; }
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int getMaxCatCount() const { return featureParams->maxCatCount; }
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const Mat& getCls() const { return cls; }
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float getCls(int si) const { return cls.at<float>(si, 0); }
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protected:
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virtual void generateFeatures() = 0;
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int npos, nneg;
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int numFeatures;
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Size winSize;
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CvFeatureParams *featureParams;
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Mat cls;
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};
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#endif
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