ImpulseResponseOp.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 ImpulseResponse2_H
#define ImpulseResponse2_H
 
#include <drain/image/CoordinatePolicy.h>
#include <sstream>
#include <ostream>
//#include "drain/utility>
 
#include "drain/image/FilePng.h"
//#include "drain/image/SegmentProber.h"
 
#include "ImageOp.h"
 
namespace drain
{
namespace image
{
 
 
template <class C>
class ImpulseBucket : public C {
 
public:
 
    ~ImpulseBucket(){}
 
    typedef C conf_t;
 
    virtual inline
    void init(const Channel & src, bool horizontal = true){};
 
    virtual
    void reset() = 0;
 
    virtual
    void addLeft(int i, double value, double weight) = 0;
 
    virtual
    void addRight(int i, double value, double weight) = 0;
 
    virtual
    void addDown(int i, double value, double weight) = 0;
 
    virtual
    void addUp(int i, double value, double weight) = 0;
 
 
    virtual
    double get(int i) = 0;
 
 
    virtual
    double getWeight(int i) = 0;
 
protected:
 
    //ImpulseBucket(conf_t){}
 
};
 
 
// Important. Guarantees that bucket (parameters) have been initialized.
 
template <class T>
class ImpulseResponseOpBase : public ImageOp {
public:
 
    inline
    ImpulseResponseOpBase(){};
 
    inline
    ImpulseResponseOpBase(const typename T::conf_t & conf) : conf(conf){
        //std::cerr << "decay now:" << conf.decay << '\n';
    };
 
    virtual inline
    ~ImpulseResponseOpBase(){};
 
    virtual
    const std::string & getName() const {
        return this->conf.getName();
    };
 
    virtual
    const std::string & getDescription() const {
        return this->conf.getDescription();
    };
 
    // instead, consider conf object of type T::conf_t
    typename T::conf_t conf;
 
};
 
 
 
template <class T>
class ImpulseResponseOp : public ImpulseResponseOpBase<T> {
 
public:
 
 
    inline
    ImpulseResponseOp() {
        init();
    };
 
    inline
    ImpulseResponseOp(const ImpulseResponseOp<T> & op) : ImpulseResponseOpBase<T>(op.conf) {
        init();
    };
 
    inline
    ImpulseResponseOp(const typename T::conf_t & conf) : ImpulseResponseOpBase<T>(conf) {
        init();
    };
 
    inline
    void init(){
        this->parameters.append(this->conf.getParameters());
        this->parameters.link("extendHorz", extendHorz = 0, "pix"); // for avoiding border effects, include pixels beyond main area
        this->parameters.link("extendVert", extendVert = 0, "pix"); // for avoiding border effects, include pixels beyond main area
        this->parameters.link("weightThreshold", weightThreshold = 0.05, "[0..1.0]"); //
 
    };
 
    inline
    ~ImpulseResponseOp(){};
 
 
    /*
    virtual inline
    void make Compatible(const ImageFrame &src, Image &dst) const  {
 
        drain::Logger mout(getImgLog(), __FILE__, __FUNCTION__);
        //mout.debug3("src: " , src );
 
        if (dst.getType() != src.getType()){
            mout.note(" changing dst image type: " , dst.getType().name() , '>' , src.getType().name() );
        }
 
        dst.copyShallow(src);
        mout.warn(dst );
        // mout .debug3() << "dst: " << dst << mout.endl;
 
    };
    */
 
    //virtual void makeCompatible(const ImageFrame & src,Image & dst) const;
    virtual
    void traverseChannels(const ImageTray<const Channel> & src, ImageTray<Channel> & dst) const {
        this->traverseChannelsSeparately(src, dst);
    }
 
    virtual
    void traverseChannel(const Channel & src, Channel & dst) const;
 
    // weighted
    virtual
    void traverseChannel(const Channel & src, const Channel & srcWeight, Channel & dst, Channel & dstWeight) const;
 
    virtual
    void traverseChannelHorz(const Channel & src, const Channel & srcWeight, Channel & dst, Channel & dstWeight) const;
 
    virtual
    void traverseChannelVert(const Channel & src, const Channel & srcWeight, Channel & dst, Channel & dstWeight) const;
 
    inline
    void setExtensions(int horz, int vert){
        extendHorz = horz;
        extendVert = vert;
    }
 
protected:
 
    int extendHorz;
    int extendVert;
    double weightThreshold;
    //double undetectQuality;
 
};
 
 
template <class T>
void ImpulseResponseOp<T>::traverseChannel(const Channel & src, Channel & dst) const {
    Logger mout(getImgLog(), __FILE__, __FUNCTION__);
 
    mout.debug("delegating to traverseChannel(src, empty, dst, empty)" );
 
    drain::image::Image empty;
    traverseChannel(src, empty, dst, empty);
 
}
 
template <class T>
void ImpulseResponseOp<T>::traverseChannel(const Channel & src, const Channel & srcWeight, Channel & dst, Channel & dstWeight) const {
 
    Logger mout(getImgLog(), __FILE__, __FUNCTION__);
 
    dst.setScaling(src.getScaling());
    // OLD dstWeight.setScaling(srcWeight.getScaling());
    // NEW
    dstWeight.setPhysicalRange({0.0, 1.0}, true);
 
    mout.warn(dst.getProperties() );
 
    traverseChannelHorz(src, srcWeight, dst, dstWeight);
    traverseChannelVert(dst, dstWeight, dst, dstWeight);
 
}
 
 
template <class T>
void ImpulseResponseOp<T>::traverseChannelHorz(const Channel & src, const Channel & srcWeight, Channel & dst, Channel & dstWeight) const {
 
    Logger mout(getImgLog(), __FILE__, __FUNCTION__);
 
    mout.debug(*this );
 
    const bool UNWEIGHTED = (srcWeight.isEmpty() || dstWeight.isEmpty());
 
    const int width    = src.getWidth();
    const int widthExt = src.getWidth()+extendHorz;
    const int height   = src.getHeight();
    const double defaultWeight = 1.0; //srcWeight.getMax<double>();
 
    //const double weightThreshold = 0.1;
    double w;
 
    const drain::image::CoordinateHandler2D coordHandler(src.getGeometry().area, src.getCoordinatePolicy());
 
    drain::Point2D<int> point;
 
    T bucket(this->conf);
    bucket.init(src, true);
 
    // NOTE: raw data values, but scaled weight values.
 
    for (int j=0; j<height; ++j){
 
        bucket.reset();
 
        if (UNWEIGHTED){
 
            // Collect
            for (int i=-extendHorz; i<widthExt; ++i){
 
                point.setLocation(i, j);
                coordHandler.handle(point);
                //if (coordHandler.validate(point)){
                bucket.addLeft(point.x, src.get<double>(point.x, point.y), defaultWeight);
                //}
 
                point.setLocation(width-1-i, j);
                coordHandler.handle(point);
                // if (coordHandler.validate(point)){
                bucket.addRight(point.x, src.get<double>(point.x, point.y), defaultWeight);
                //}
 
            }
 
            // Write
            for (int i=0; i<width; ++i){
                dst.putScaled(i,j, bucket.get(i));
            }
 
        }
        else {
 
            // Collect
            for (int i=-extendHorz; i<widthExt; ++i){
 
                point.setLocation(i, j);
                coordHandler.handle(point);
                //if (coordHandler.validate(point)){
                bucket.addLeft(point.x, src.get<double>(point.x, point.y), srcWeight.getScaled(point.x, point.y));
                //}
 
                point.setLocation(width-1-i, j);
                coordHandler.handle(point);
                // if (coordHandler.validate(point)){
                bucket.addRight(point.x, src.get<double>(point.x, point.y), srcWeight.getScaled(point.x, point.y));
                // }
 
            }
 
            // Write
            for (int i=0; i<width; ++i){
                w = bucket.getWeight(i);
                if (w > weightThreshold){
                    dst.putScaled(i,j, bucket.get(i));
                    dstWeight.putScaled(i,j, w);
                }
                else
                    dstWeight.putScaled(i,j, 0);
                //dst.putScaled(i,j, bucket.get(i));
                //dstWeight.putScaled(i,j, bucket.getWeight(i));
            }
 
        }
 
    }
}
 
template <class T>
void ImpulseResponseOp<T>::traverseChannelVert(const Channel & src, const Channel & srcWeight, Channel & dst, Channel & dstWeight) const {
 
    Logger mout(getImgLog(), __FILE__, __FUNCTION__);
 
    mout.debug(*this );
 
    const bool UNWEIGHTED = (srcWeight.isEmpty() || dstWeight.isEmpty());
 
    const int width     = src.getWidth();
    const int height    = src.getHeight();
    const int heightExt = src.getHeight() + extendVert;
    const double defaultWeight   = 1.0; //srcWeight.getMax<double>();
    //const double weightThreshold = 0.1;
    double w;
 
    const drain::image::CoordinateHandler2D coordHandler(src.getGeometry(), src.getCoordinatePolicy());
 
    drain::Point2D<int> point;
 
    T bucket(this->conf);
    bucket.init(src, false);
 
    // NOTE: raw data values, but scaled weight values.
 
    for (int i=0; i<width; i++){
 
        bucket.reset();
 
        if (UNWEIGHTED){
 
            // Collect
            for (int j=-extendVert; j<heightExt; ++j){
 
                point.setLocation(i, j);
                coordHandler.handle(point); //if (coordHandler.validate(point)){
                bucket.addLeft(point.y, src.get<double>(point.x, point.y), defaultWeight);
 
                point.setLocation(i, height-1-j);
                coordHandler.handle(point); //if (coordHandler.validate(point))
                bucket.addRight(point.y, src.get<double>(point.x, point.y), defaultWeight);
 
            }
 
            // Write
            for (int j=0; j<height; ++j){
                dst.putScaled(i,j, bucket.get(j));
            }
 
        }
        else {
 
            // Collect
            for (int j=-extendVert; j<heightExt; ++j){
 
                point.setLocation(i, j);
                coordHandler.handle(point); //if (coordHandler.validate(point)){
                bucket.addLeft(point.y, src.get<double>(point.x, point.y), srcWeight.getScaled(point.x, point.y));
 
                point.setLocation(i, height-1-j);
                coordHandler.handle(point); // if (coordHandler.validate(point)){
                bucket.addRight(point.y, src.get<double>(point.x, point.y), srcWeight.getScaled(point.x, point.y));
 
            }
 
            // Write
            for (int j=0; j<height; ++j){
                w = bucket.getWeight(j);
                if (w > weightThreshold){
                    dst.putScaled(i,j, bucket.get(j));
                    dstWeight.putScaled(i,j, w);
                }
                else
                    dstWeight.putScaled(i,j, 0);
            }
 
        }
 
 
    }
}
 
 
 
 
 
 
 
} // image::
 
} // drain::
 
 
#endif /* ImpulseResponse_H_ */