classifier.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
// Local
#include "ccPointDescriptor.h"
 
// cloudViewer
#include <CVGeom.h>
 
// Qt
#include <QString>
 
// system
#include <vector>
 
class Classifier {
public:  // methods
    typedef Vector2Tpl<float> Point2D;
 
    Classifier();
 
 
    bool checkRefPoints();
 
    float classify2D_checkcondnum(const Point2D& P,
                                  const Point2D& R,
                                  float& condnumber) const;
 
    float classify2D(const Point2D& P) const;
 
    Point2D project(const CorePointDesc& mscdata) const;
 
    float classify(const CorePointDesc& mscdata) const;
 
    struct FileHeader {
        unsigned classifierCount;
        unsigned dimPerScale;
        unsigned descID;
    };
 
    static bool Load(QString filename,
                     std::vector<Classifier>& classifiers,
                     std::vector<float>& scales,
                     QString& error,
                     FileHeader* header = 0,
                     bool headerOnly = false);
 
    bool save(QString filename, QString& error);
 
public:  // members
    int class1, class2;
    std::vector<float> weightsAxis1, weightsAxis2;
    std::vector<Point2D> path;
    float absMaxXY, axisScaleRatio;
    Point2D refPointPos, refPointNeg;
 
    unsigned descriptorID;
 
    unsigned dimPerScale;
 
    std::vector<float> scales;
};