/usr/src/WrapITK/Modules/PixelMath/ is in libinsighttoolkit3-dev 3.20.1+git20120521-5.
This file is owned by root:root, with mode 0o755.
..
/usr/src/WrapITK/Modules/PixelMath/CMakeLists.txt
/usr/src/WrapITK/Modules/PixelMath/wrap_itkAbsoluteValueDifferenceImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkAddImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkAndImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkAtan2ImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkBinaryMagnitudeImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkConstrainedValueAdditionImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkConstrainedValueDifferenceImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkDivideImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkMultiplyImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkNaryAddImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkNaryMaximumImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkOrImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkSquaredDifferenceImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkSubtractImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkTernaryAddImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkTernaryMagnitudeImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkTernaryMagnitudeSquaredImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkWeightedAddImageFilter.cmake
/usr/src/WrapITK/Modules/PixelMath/wrap_itkXorImageFilter.cmake