/usr/include/OTB-6.4/otbTerraSarBrightnessFunctor.txx is in libotb-dev 6.4.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | /*
* Copyright (C) 2005-2017 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 otbTerraSarBrightnessFunctor_txx
#define otbTerraSarBrightnessFunctor_txx
#include "otbTerraSarBrightnessFunctor.h"
#include "itkNumericTraits.h"
namespace otb
{
namespace Functor
{
template <class TInput, class TOutput>
TerraSarBrightnessFunctor<TInput, TOutput>
::TerraSarBrightnessFunctor()
{
m_CalibrationFactor = itk::NumericTraits<double>::Zero;
m_ResultsInDecibels = false;
m_DefaultValue = 0.00001; // Default value is 10^-5
}
template <class TInput, class TOutput>
TOutput
TerraSarBrightnessFunctor<TInput, TOutput>
::operator() (const TInput &inPix)
{
// Formula: Beta^0 = Ks * |DN|^2
// First, square the input pixel
double squareInPix = vcl_pow(static_cast<double>(inPix), 2.);
// Then apply the calibration factor
double beta = m_CalibrationFactor * squareInPix;
if (beta <= 0) beta = m_DefaultValue;
// Results in decibels case
if (m_ResultsInDecibels)
{
beta = 10 * vcl_log10(beta);
}
return static_cast<TOutput>(beta);
}
template <class TInput, class TOutput>
std::complex<TOutput>
TerraSarBrightnessFunctor<TInput, TOutput>
::operator() (const std::complex<TInput> &inPix)
{
// First, extract modulus and phase
double modulus = vcl_sqrt(inPix.real() * inPix.real() + inPix.imag() * inPix.imag());
double phase = vcl_atan2(inPix.imag(), inPix.real());
// Then, calibrate the modulus
double beta = this->operator() (modulus);
// Last, put back the phase
std::complex<TOutput> out(std::polar(beta, phase));
return out;
}
} // namespace Functor
} // namespace otb
#endif
|