otbSentinel1ThermalNoiseLookupData.h

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/*
 * Copyright (C) 2005-2024 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef otbSentinel1ThermalNoiseLookupData_h
#define otbSentinel1ThermalNoiseLookupData_h
 
#include "otbSentinel1CalibrationLookupData.h"
 
namespace otb
{
 
struct Sentinel1AzimuthNoiseStruct
{
  int firstAzimuthLine = 0;
  int lastAzimuthLine = 0;
  int firstRangeSample = 0;
  int lastRangeSample = 0;
 
  std::vector<int> lines;
  std::vector<float>  vect;
};
 
class Sentinel1ThermalNoiseLookupData : public SarCalibrationLookupData
{
public:
 
  using Self = Sentinel1ThermalNoiseLookupData;
  using Superclass = itk::LightObject;
  using Pointer = itk::SmartPointer<Self>;
  using ConstPointer = itk::SmartPointer<const Self>;
 
  using IndexValueType = itk::IndexValueType ;
 
  itkNewMacro(Self);
 
  itkTypeMacro(Sentinel1ThermalNoiseLookupData, itk::LightObject);
 
  void InitParameters(double firstLineTime,
                      double lastLineTime,
                      int numOfLines,
                      std::vector<Sentinel1CalibrationStruct> const& rangeNoiseVectorList,
                      std::vector<Sentinel1AzimuthNoiseStruct> const& azimuthNoiseVectorList);
 
  double GetValue(const IndexValueType x, const IndexValueType y) const override;
 
protected:
  Sentinel1ThermalNoiseLookupData() : m_FirstLineTime(0.), m_LastLineTime(0.) {m_FirstLineTime = 1.;};
  ~Sentinel1ThermalNoiseLookupData() = default;
 
private:
  double GetRangeNoise(const IndexValueType x, const IndexValueType y) const;
 
  double GetAzimuthNoise(const IndexValueType x, const IndexValueType y) const;
 
  int GetRangeVectorIndex(int y) const;
 
  int GetAzimuthVectorIndex(int x, int y) const;
 
  int GetPixelIndex(int x, const std::vector<int> & vec) const;
 
  double m_FirstLineTime = 0.;
 
  double m_LastLineTime = 0.;
 
  double m_LineTimeInterval = 0.;
 
  int m_NumOfLines = 0;
  int m_RangeCount = 0;
  int m_AzimuthCount = 0;
 
  std::vector<Sentinel1CalibrationStruct> m_RangeNoiseVectorList;
 
  std::vector<Sentinel1AzimuthNoiseStruct> m_AzimuthNoiseVectorList;
};
 
}
 
#endif