AtpTileSource.h

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//**************************************************************************************************
//
//     OSSIM Open Source Geospatial Data Processing Library
//     See top level LICENSE.txt file for license information
//
//**************************************************************************************************
#ifndef AtpTileSource_HEADER
#define AtpTileSource_HEADER

#include "AtpConfig.h"
#include "AutoTiePoint.h"
#include <ossim/base/ossimIrect.h>
#include <ossim/imaging/ossimImageCombiner.h>
#include <ossim/imaging/ossimImageHandler.h>
#include <ossim/projection/ossimImageViewProjectionTransform.h>
#include <memory>
#include <vector>

namespace ATP
{
class AtpGenerator;
class OSSIMDLLEXPORT AtpTileSource : public ossimImageCombiner
{
public:
   AtpTileSource(AtpGenerator* generator);

   virtual ~AtpTileSource() {}

   virtual void initialize();

   virtual ossimRefPtr<ossimImageData> getTile(const ossimIrect& origin, ossim_uint32 rLevel=0) = 0;

   AtpList& getTiePoints() { return m_tiePoints; }

   virtual ossimScalarType getOutputScalarType() const { return OSSIM_DOUBLE; }
   virtual ossim_uint32 getNumberOfOutputBands() const { return 2; }

   void filterPoints();

   void setTiePoints(ossim::TiePointList& atpList);

protected:
   struct ParallaxInfo
   {
      ParallaxInfo():dx_dH(0),dy_dH(0),parallaxSlope(0),parallaxOffset(0),denom(1),maxDistance(0) {}
      double dx_dH;
      double dy_dH;
      double parallaxSlope;
      double parallaxOffset;
      double denom;
      double maxDistance;
      std::map<std::string, double> distanceMap;
   };

   AtpTileSource();
   AtpTileSource(ossimConnectableObject::ConnectableObjectList& inputSources);

   virtual void allocate();

   void filterWithParallax();
   void computeParallax();
   void computeParallaxStatistics();

   void filterWithoutParallax();

   void pruneList();

   void initializeStaticMembers();

   std::shared_ptr<AtpGenerator> m_generator;
   AtpList m_tiePoints;
   ossimRefPtr<ossimImageData> m_tile; // Used only for raster mode (rare)
   ParallaxInfo m_paxInfo;
   bool m_considerParallax;

   // Statics assigned once for speed
   static double s_minVectorResDiff;
   static double s_maxDiffRatio;
   static double s_cosMaxAngleDiff;
   static double s_maxPaxDev;
   static double s_maxPaxPix;
   static unsigned int s_minNumConsistent;
   static unsigned int s_percentConsistent;
   static unsigned int s_numTpsPerTile;
   static bool s_useRasterMode;
   static bool s_initialized;
   static unsigned int s_numFilterIterations;

};
}
#endif /* #ifndef AtpTileSource_HEADER */