/usr/include/ossim/projection/ossimBilinearProjection.h is in libossim-dev 1.7.21-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// License: See top level LICENSE.txt file.
//
// Author: Garrett Potts
//
//********************************************************************
// $Id: ossimBilinearProjection.h 12136 2007-12-07 14:26:43Z gpotts $
#ifndef ossimBilinearProjection_HEADER
#define ossimBilinearProjection_HEADER
#include <vector>
#include <ossim/base/ossimDpt.h>
#include <ossim/base/ossimGpt.h>
#include <ossim/projection/ossimOptimizableProjection.h>
#include <ossim/projection/ossimProjection.h>
#include <ossim/base/ossimLeastSquaresBilin.h>
class OSSIM_DLL ossimBilinearProjection : public ossimProjection,
public ossimOptimizableProjection
{
public:
ossimBilinearProjection();
ossimBilinearProjection(const ossimBilinearProjection& rhs);
ossimBilinearProjection(const ossimDpt& ul,
const ossimDpt& ur,
const ossimDpt& lr,
const ossimDpt& ll,
const ossimGpt& ulg,
const ossimGpt& urg,
const ossimGpt& lrg,
const ossimGpt& llg);
virtual ~ossimBilinearProjection();
virtual ossimObject *dup()const;
virtual ossimGpt origin()const;
virtual void worldToLineSample(const ossimGpt& worldPoint,
ossimDpt& lineSampPt) const;
/*!
* METHOD: lineSampleToWorld()
* Performs the inverse projection from line, sample to ground (world):
*/
virtual void lineSampleToWorld(const ossimDpt& lineSampPt,
ossimGpt& worldPt) const;
/*!
* METHOD: lineSampleHeightToWorld
* This is the pure virtual that projects the image point to the given
* elevation above ellipsoid, thereby bypassing reference to a DEM. Useful
* for projections that are sensitive to elevation (such as sensor models).
*/
virtual void lineSampleHeightToWorld(const ossimDpt& lineSampPt,
const double& heightAboveEllipsoid,
ossimGpt& worldPt) const;
virtual bool saveState(ossimKeywordlist& kwl,
const char* prefix=0)const;
virtual bool loadState(const ossimKeywordlist& kwl,
const char* prefix=0);
virtual bool operator==(const ossimProjection& projection) const;
virtual ossimDpt getMetersPerPixel() const;
virtual std::ostream& print(std::ostream& out) const;
/*!
* METHOD: setTiePoints
* add any number of tie points and calculate bilinear fit
* returns the ground error variance (=RMS^2), in meters^2
*/
virtual ossim_float64 setTiePoints(const std::vector<ossimDpt>& lsPt,
const std::vector<ossimGpt>& geoPt);
/*
* optimizable interface
*/
virtual bool setupOptimizer(const ossimString& setup);
inline virtual bool useForward()const {return false;}
//! better go from image to ground, also means that errors variance are in squared meters
virtual ossim_uint32 degreesOfFreedom()const;
virtual double optimizeFit(const ossimTieGptSet& tieSet, double* targetVariance=0);
/**
* @brief Implementation of pure virtual
* ossimProjection::isAffectedByElevation method.
* @return false.
*/
virtual bool isAffectedByElevation() const { return false; }
protected:
void initializeBilinear();
/**
* Checks theLineSamplePt for nans.
* @return true if any point has a nan.
* @note If theLineSamplePt size is 0 this returns false.
*/
bool dPtsHaveNan() const;
/**
* Checks theGeographicPt for nans.
* @return true if any point has a nan.
* @note If theLineSamplePt size is 0 this returns false.
*/
bool gPtsHaveNan() const;
/**
* @return The mid point of theLineSamplePts.
*/
ossimDpt midLineSamplePt() const;
std::vector<ossimDpt> theLineSamplePt;
std::vector<ossimGpt> theGeographicPt;
ossimLeastSquaresBilin theLatFit;
ossimLeastSquaresBilin theLonFit;
ossimLeastSquaresBilin theXFit;
ossimLeastSquaresBilin theYFit;
bool theInterpolationPointsHaveNanFlag;
TYPE_DATA
};
#endif /* #ifndef ossimBilinearProjection_HEADER */
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