TEST : add testing for compute gain lut filter

Modules/Filtering/Contrast/test/CMakeLists.txt

@@ -26,6 +26,7 @@ otbComputeHistoFilterNew.cxx
 otbComputeHistoFilter.cxx
 otbApplyGainFilterNew.cxx
 otbComputeGainLutFilterNew.cxx
+otbComputeGainLutFilter.cxx
 otbCLHistogramEqualizationFilterNew.cxx
 otbCLHistogramEqualizationFilter.cxx
 otbHelperCLAHE.cxx

Modules/Filtering/Contrast/test/otbComputeGainLutFilter.cxx

+/*
+ * 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.
+ */
+
+#include "otbVectorImage.h"
+#include "otbImage.h"
+#include "otbImageFileWriter.h"
+#include "otbImageFileReader.h"
+#include "otbComputeGainLutFilter.h"
+
+int otbComputeGainLutFilter(int itkNotUsed(argc), char * itkNotUsed(argv) [])
+{
+  typedef int InputPixelType;
+  typedef double OutputPixelType;
+  const unsigned int Dimension = 2;
+
+  typedef otb::VectorImage< InputPixelType , Dimension > HistoImageType;
+  typedef otb::Image< InputPixelType , Dimension > InputImageType;
+  typedef otb::VectorImage< OutputPixelType , Dimension > LutImageType;
+  typedef otb::ComputeGainLutFilter< HistoImageType , LutImageType > FilterType;
+
+  typedef otb::ImageFileReader< InputImageType > ReaderImageType; 
+  typedef otb::ImageFileReader< HistoImageType > ReaderType; 
+  typedef otb::ImageFileWriter< LutImageType > WriterType;
+  ReaderImageType::Pointer readerImage( ReaderImageType::New() );
+  ReaderType::Pointer reader( ReaderType::New() );
+  WriterType::Pointer writer ( WriterType::New() );
+  readerImage->SetFileName( "/home/antoine/dev/my_data/test/smallinput.tif" );
+  reader->SetFileName( "/home/antoine/dev/my_data/test/small_glob_histo_ref.tif" );
+  writer->SetFileName( "/home/antoine/dev/my_data/test/small_glob_lut.tif" );
+  reader->UpdateOutputInformation();
+  readerImage->UpdateOutputInformation();
+
+  FilterType::Pointer computeGainLut ( FilterType::New() );
+
+  computeGainLut->SetInput( reader->GetOutput() );
+  computeGainLut->SetMin(0);
+  computeGainLut->SetMax(255);
+  auto size = readerImage->GetOutput()->GetLargestPossibleRegion().GetSize();
+  auto nbPix = size[0]*size[1];
+  computeGainLut->SetNbPixel( nbPix );
+
+  writer->SetInput( computeGainLut->GetOutput() );
+  writer->Update();
+
+  auto index = computeGainLut->GetOutput()->GetLargestPossibleRegion().GetIndex();
+  std::cout<<computeGainLut->GetOutput()->GetPixel( index )<<std::endl;
+
+  return EXIT_SUCCESS;
+}

Modules/Filtering/Contrast/test/otbContrastTestDriver.cxx

@@ -25,6 +25,7 @@ void RegisterTests()
   REGISTER_TEST(otbComputeHistoFilterNew);
   REGISTER_TEST(otbComputeHistoFilter);
   REGISTER_TEST(otbComputeGainLutFilterNew);
+  REGISTER_TEST(otbComputeGainLutFilter);
   REGISTER_TEST(otbApplyGainFilterNew);
   REGISTER_TEST(otbCLHistogramEqualizationFilterNew);
   REGISTER_TEST(otbCLHistogramEqualizationFilter);