SegmentProber.h

/*
 
MIT License
 
Copyright (c) 2017 FMI Open Development / Markus Peura, first.last@fmi.fi
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
 
*/
/*
Part of Rack development has been done in the BALTRAD projects part-financed
by the European Union (European Regional Development Fund and European
Neighbourhood Partnership Instrument, Baltic Sea Region Programme 2007-2013)
*/
#ifndef SEGMENT_PROBER_H
#define SEGMENT_PROBER_H
 
#include <drain/image/ProbingControl.h>  // Control
#include <sstream>
#include <ostream>
 
#include "drain/util/ReferenceMap.h"
#include "CoordinateHandler.h"
#include "FilePng.h"
 
 
namespace drain
{
namespace image
{
 
 
 
template <class S, class D>
class SegmentProberConf : public drain::ReferenceMap {
 
public:
 
    SegmentProberConf(S anchorMin=1, S anchorMax=255.0, D markerValue = 1) : anchor(anchorMin, anchorMax), markerValue(markerValue){
        link("anchor", this->anchor.tuple(), "intensity");
        //link("anchorMin", this->anchorMin = anchorMin, "intensity");
        //link("anchorMax", this->anchorMax = anchorMax, "intensity");
        link("marker", this->markerValue, "marker not universal?");
    }
 
    SegmentProberConf(const SegmentProberConf & conf) : anchor(conf.anchor), markerValue(conf.markerValue){
        // link("anchor", this->anchor.tuple(), "intensity");
        copyStruct(conf, conf, *this);
    }
 
    Range<S> anchor;
 
    D markerValue;
 
    inline
    bool isValidIntensity(S x) const {
        return anchor.contains(x);
        //return (x >= anchorMin) && (x <= anchorMax);
    }
 
 
};
 
 
template <class S, class D, class C>
class SegmentProber {
 
protected:
 
    SimpleProberControl basicControl;
 
public:
 
    ProberControl & control;
 
    typedef S src_t;
    typedef D dst_t;
    typedef C conf_t;
 
    conf_t conf;
 
    SegmentProber(const Channel &s) : control(basicControl), src(s), dst(NULL){
        init();
    };
 
    SegmentProber(const Channel &s, Channel &d) : control(basicControl), src(s), dst(&d) {
        control.markerImage.setGeometry(s.getGeometry().area);
        init();
    };
 
    virtual
    ~SegmentProber(){};
 
    void setDst(Channel & d){
        dst = &d;
    }
 
    /*
    void setParams(const C & conf){
        this->conf = conf;
        // init()
    }
    */
 
    /*
    void setParams(src_t min, src_t max, dst_t fillValue){
        anchorMin = min;
        anchorMax = max;
        value = fillValue;
    }
    */
 
    virtual
    void init(){
 
        drain::Logger mout(getImgLog(), __FILE__, __FUNCTION__);
        control.handler.set(src.getGeometry(), src.getCoordinatePolicy());
        // src.adjustCoordinateHandler(handler);
        mout.debug(control.handler );
        mout.debug2(src );
        if (dst){
            mout.debug2(*dst );
        }
 
    }
 
 
 
    void scan(){
 
        drain::Logger mout(getImgLog(), __FILE__, __FUNCTION__);
 
        const CoordinatePolicy & cp = control.handler.getPolicy();
        bool HORZ_MODE = ((cp.xUnderFlowPolicy != EdgePolicy::POLAR) && (cp.xOverFlowPolicy != EdgePolicy::POLAR));
 
        if (HORZ_MODE){
            mout.debug("Horz Probe");
            for (size_t i=0; i<src.getWidth(); ++i){
                for (size_t j=0; j<src.getHeight(); ++j){
                    probe(i,j, true);
                    //probeH(i,j);
                    /*
                    clear();
                    if (handler.validate(i, j)){
                        scanHorzProbeVert(i,j);
                    }*/
                }
            }
        }
        else {
            mout.debug("Vert Probe");
            for (size_t j=0; j<src.getHeight(); ++j){
                for (size_t i=0; i<src.getWidth(); ++i){
                    probe(i,j, false);
                    /*clear();
                    if (handler.validate(i, j)){
                        scanVertProbeHorz(i,j);
                    }
                    */
                }
            }
        }
    }
 
 
    void probe(int i, int j, bool HORIZONTAL){
 
 
        clear();
        if (control.handler.validate(i, j)){
            /*
            if (isValidPixel(i,j)){
                Logger mout(getImgLog(), "SegmentProber", __FUNCTION__);
                mout.warn("accept: " , i , ',' , j , "\t=" , src.get<double>(i,j) , '\t' , dst->get<double>(i,j) );
            }
            */
            if (HORIZONTAL)
                scanHorzProbeVert(i,j);
            else
                scanVertProbeHorz(i,j);
        }
 
    };
 
 
// consider protected:
 
    const Channel & src;
    Channel *dst;
 
    // CoordinateHandler2D handler;
 
 
 
    inline
    bool isValidPixel(int i, int j) const {
        return (isValidSegment(i,j) && !isVisited(i,j));
    }
 
 
    virtual
    bool isValidSegment(int i, int j) const = 0;
    //return (src.get<src_t>(i,j) > 0);
    //return (src.get<src_t>(i,j) >= anchorMin) && (src.get<src_t>(i,j) <= anchorMax);
 
    /*
    virtual inline
    bool isValidSegment(int i, int j) const {
        return conf.isValidIntensity(src.get<src_t>(i,j));
    }
    */
 
protected:
 
    virtual inline
    bool isValidMove(int i0, int j0, int i, int j) const {
        return true;
    }
 
 
    virtual inline
    void update(int i, int j){
    };
 
 
 
    virtual inline
    void visit(int i, int j) {
 
        update(i, j);
 
        dst->put(i,j, 1);
 
    }
 
protected:
 
 
    virtual
    void clear(){};
 
 
 
    virtual inline
    bool isVisited(int i, int j) const {
        return (dst->get<D>(i,j) != 0);
    }
 
 
 
    template <int DI, int DJ>
    inline
    bool move(int & i, int & j){ //, int DI, int DJ) {
 
        // Save
        const int i0 = i;
        const int j0 = j;
 
        i += DI;
        j += DJ;
 
        // Drop isValidSegment
        if (control.handler.validate(i,j)){ // must be first, changes coords
            if (isValidPixel(i,j))
                if (isValidMove(i0,j0, i,j))
                    return true;
        }
 
        // restore orig
        i = i0;
        j = j0;
        return false;
 
    }
 
 
 
 
 
    void scanHorzProbeVert(int i, int j) {
 
        if (!isValidPixel(i,j))
            return;
 
        visit(i,j); // mark & update
 
        const int i0 = i;
        const int j0 = j;
 
        int iEnd;
        while (move<1,0>(i,j)){
            visit(i,j);
        }
        iEnd = i;
        // Now i2 is the maximum valid i coordinate.
 
        // Rewrite code: iMax should support wrapping, so 200...256...10.
 
        i=i0;
        j=j0;
        while (move<-1,0>(i,j)){
            visit(i, j);
        }
        // Now i is the minimum valid i coordinate.
 
 
        int i2, j2;
        bool done = false;
        //while (i != iEnd){
        while (!done){
 
            done = (i == iEnd);
 
            i2 = i;
            j2 = j-1;
            if (control.handler.validate(i2, j2)){
                if (isValidMove(i,j, i2,j2))
                    scanHorzProbeVert(i2,j2);
            }
 
            i2 = i;
            j2 = j+1;
            if (control.handler.validate(i2, j2)){
                if (isValidMove(i,j, i2,j2))
                    scanHorzProbeVert(i2,j2);
            }
 
            ++i;
            control.handler.validate(i, j); // check?
 
        }; // while (i != iEnd);
 
    }
 
 
    void scanVertProbeHorz(int i, int j) {
 
        if (!isValidPixel(i,j))
            return;
 
        visit(i,j); // mark & update
 
        const int i0 = i;
        const int j0 = j;
 
        int jEnd;
        while (move<0,1>(i,j)){
            visit(i,j);
        }
        jEnd = j;
        // Now jEnd is the last (~maximum) valid i coordinate.
 
        // Rewrite code?: iMax should support wrapping, so 200...256...10.
 
        i=i0;
        j=j0;
        while (move<0,-1>(i,j)){
            visit(i, j);
        }
        // Now j is the first (~minimum) valid j coordinate.
 
 
        int i2, j2;
        bool done = false;
        while (!done){
            done = (j == jEnd);
            j2 = j;
            // Test left side
            i2 = i-1;
            if (control.handler.validate(i2, j2)){
                if (isValidMove(i,j, i2,j2))
                    scanVertProbeHorz(i2,j2);
            }
            j2 = j;
            // Test right side
            i2 = i+1;
            if (control.handler.validate(i2, j2)){
                if (isValidMove(i,j, i2,j2))
                    scanVertProbeHorz(i2,j2);
            }
            ++j;
            control.handler.validate(i, j); // check?
        };
 
    }
 
};
 
 
 
template <class S, class D, class C>
std::ostream & operator<<(std::ostream & ostr, const SegmentProber<S,D,C> & prober){
    /*
    ostr << "value="     << (float)prober.value << ',';
    ostr << "anchorMin=" << (float)prober.anchorMin << ',';
    ostr << "anchorMax=" << (float)prober.anchorMax << ',';
    ostr << "size="      << (float)prober.size << ',';
    */
    ostr << "conf: " << prober.conf << ", ";
    //ostr << "width="     << (float)prober.width << ',';
    //ostr << "height="    << (float)prober.height << ',';
    ostr << "handler: "   << prober.control.handler << ',';
    //ostr << "p="         << prober.p;
    return ostr;
}
 
 
 
 
class FillProber : public SegmentProber<int,int,SegmentProberConf<int, int> > {
 
public:
 
    FillProber(const Channel &s, Channel &d) : SegmentProber<int,int,SegmentProberConf<int, int> >(s, d), count(0) {};
 
    FillProber(const Channel &s) : SegmentProber<int,int,SegmentProberConf<int, int> >(s), count(0) {};
 
    virtual inline
    void visit(int i, int j) {
        count++;
        update(i, j);
        dst->put(i,j, conf.markerValue);
    }
 
 
    virtual inline
    bool isVisited(int i, int j) const {
        return (dst->get<dst_t>(i,j) == conf.markerValue);
    }
 
    virtual inline
    bool isValidSegment(int i, int j) const {
        return conf.isValidIntensity(src.get<src_t>(i,j));
    }
 
    size_t count;
 
};
 
 
class SizeProber : public SegmentProber<int,int,SegmentProberConf<int, int> > {
 
public:
 
    SizeProber(const Channel &s, Channel &d) : SegmentProber<int,int,SegmentProberConf<int, int> >(s, d), size(0) {};
 
    virtual inline
    void clear(){
        size = 0;
    };
 
 
    virtual inline
    void visit(int i, int j) {
        update(i, j);
        dst->put(i,j, conf.markerValue);
    }
 
 
    virtual inline
    bool isVisited(int i, int j) const {
        return (dst->get<dst_t>(i,j) > 0);
    }
 
 
    virtual inline
    void update(int i, int j){
        ++size;
    }
 
    virtual inline
    bool isValidSegment(int i, int j) const {
        return conf.isValidIntensity(src.get<src_t>(i,j));
    }
 
    mutable size_t size; // Consider deriving SegmentProber => SegmentAreaProber
 
 
};
 
 
 
 
} // image::
} // drain::
 
#endif /* SEGMENT_PROBER_H_ */