540 lines
13 KiB
C
540 lines
13 KiB
C
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// Copyright (c) 2005-2008 INRIA Sophia-Antipolis (France).
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// 2008 GeometryFactory
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// All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 3 of the License,
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// or (at your option) any later version.
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//
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// Licensees holding a valid commercial license may use this file in
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// accordance with the commercial license agreement provided with the software.
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//
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// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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//
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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0+
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//
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//
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// Author(s) : Laurent Rineau, Pierre Alliez
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#ifndef CGAL_IMAGE_3_H
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#define CGAL_IMAGE_3_H
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#include <CGAL/disable_warnings.h>
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#include <CGAL/basic.h>
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#include <CGAL/array.h>
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#include <boost/shared_ptr.hpp>
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#include <boost/format.hpp>
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#include <boost/unordered_set.hpp>
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#include <CGAL/ImageIO.h>
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#include <CGAL/function_objects.h>
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#include <limits>
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#include <set>
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#include <cstdlib>
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#if defined(BOOST_MSVC)
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# pragma warning(push)
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# pragma warning(disable:4244 4251) // double float conversion loss of data and dll linkage
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#endif
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class vtkImageData;
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namespace CGAL {
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namespace ImageIO {
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template <typename T>
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struct Indicator_factory
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{
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class Indicator : public CGAL::cpp98::unary_function<T, double>
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{
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const T label;
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public:
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Indicator(T i) : label(i) {}
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double operator()(T x) const
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{
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return (x == label) ? 1. : 0.;
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}
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}; // end nested class Indicator
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Indicator indicator(T i) const {
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return Indicator(i);
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}
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};
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} // end namespace CGAL::ImageIO
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class CGAL_IMAGEIO_EXPORT Image_3
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{
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struct Image_deleter {
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void operator()(_image* image)
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{
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::_freeImage(image);
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}
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};
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public:
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typedef boost::shared_ptr<_image> Image_shared_ptr;
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typedef Image_shared_ptr Pointer;
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protected:
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Image_shared_ptr image_ptr;
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// implementation in src/CGAL_ImageIO/Image_3.cpp
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bool private_read(_image* im);
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public:
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Image_3()
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: image_ptr()
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{
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}
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Image_3(const Image_3& bi)
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: image_ptr(bi.image_ptr)
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{
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// std::cerr << "Image_3::copy_constructor\n";
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}
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Image_3(_image* im)
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{
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private_read(im);
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}
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~Image_3()
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{
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}
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const _image* image() const
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{
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return image_ptr.get();
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}
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_image* image()
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{
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return image_ptr.get();
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}
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const void* data() const
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{
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return image()->data;
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}
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void* data()
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{
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return image()->data;
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}
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void set_data(void* d)
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{
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image()->data = d;
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}
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std::size_t xdim() const { return image_ptr->xdim; }
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std::size_t ydim() const { return image_ptr->ydim; }
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std::size_t zdim() const { return image_ptr->zdim; }
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std::size_t size() const { return xdim() * ydim() * zdim(); }
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double vx() const { return image_ptr->vx; }
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double vy() const { return image_ptr->vy; }
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double vz() const { return image_ptr->vz; }
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float value(const std::size_t i,
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const std::size_t j,
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const std::size_t k) const
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{
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return ::evaluate(image(),i,j,k);
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}
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public:
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bool read(const char* file)
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{
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return private_read(::_readImage(file));
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}
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bool read_raw(const char* file,
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const unsigned int rx,
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const unsigned int ry,
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const unsigned int rz,
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const double vx = 1,
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const double vy = 1,
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const double vz = 1,
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const unsigned int offset = 0,
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std::size_t wdim=1,
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WORD_KIND wk = WK_FIXED,
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SIGN sign = SGN_UNSIGNED
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)
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{
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return private_read(::_readImage_raw(file,
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rx,ry,rz,
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vx,vy,vz,offset,
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wdim, wk, sign));
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}
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public:
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template <typename Image_word_type,
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typename Target_type,
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typename Coord_type,
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class Image_transform>
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Target_type
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trilinear_interpolation(const Coord_type&x,
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const Coord_type&y,
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const Coord_type&z,
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const Target_type& value_outside =
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Target_type(),
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Image_transform transform =
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Image_transform() ) const;
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// default Image_transform = CGAL::Identity
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template <typename Image_word_type,
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typename Target_type,
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typename Coord_type>
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Target_type
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trilinear_interpolation(const Coord_type&x,
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const Coord_type&y,
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const Coord_type&z,
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const Target_type& value_outside =
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Target_type()) const
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{
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return trilinear_interpolation<
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Image_word_type,
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Target_type>(x, y, z, value_outside,
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CGAL::Identity<Image_word_type>());
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}
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template <typename Image_word_type,
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typename Coord_type,
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typename Target_type>
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Target_type
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labellized_trilinear_interpolation(const Coord_type&x,
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const Coord_type&y,
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const Coord_type&z,
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const Target_type& value_outside =
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Target_type()) const
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{
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CGAL::ImageIO::Indicator_factory<Image_word_type> indicator_factory;
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return labellized_trilinear_interpolation<Image_word_type>
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(x, y, z, value_outside, indicator_factory);
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}
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template <typename Image_word_type,
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typename Coord_type,
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typename Target_type,
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typename Indicator_factory>
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Target_type
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labellized_trilinear_interpolation
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(const Coord_type&x,
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const Coord_type&y,
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const Coord_type&z,
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const Target_type& value_outside,
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const Indicator_factory indicator_factory) const;
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}; // end Image_3
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template <typename Image_word_type,
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typename Target_type,
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typename Coord_type,
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class Image_transform>
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Target_type
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Image_3::trilinear_interpolation(const Coord_type& x,
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const Coord_type& y,
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const Coord_type& z,
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const Target_type& value_outside,
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Image_transform transform) const
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{
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// Check on double/float coordinates, because (int)-0.1 gives 0
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if ( x < 0 || y < 0 || z < 0 )
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return value_outside;
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const Coord_type lx = x / image()->vx;
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const Coord_type ly = y / image()->vy;
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const Coord_type lz = z / image()->vz;
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const std::size_t dimx = xdim();
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const std::size_t dimy = ydim();
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const std::size_t dimz = zdim();
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const std::size_t dimxy = dimx*dimy;
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if(lx < 0 ||
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ly < 0 ||
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lz < 0 ||
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lz >= Coord_type(dimz-1) ||
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ly >= Coord_type(dimy-1) ||
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lx >= Coord_type(dimx-1))
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{
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return value_outside;
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}
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// images are indexed by (z,y,x)
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const int i1 = (int)(lz);
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const int j1 = (int)(ly);
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const int k1 = (int)(lx);
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const int i2 = i1 + 1;
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const int j2 = j1 + 1;
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const int k2 = k1 + 1;
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/* We assume (x,y,z) lies in the following cube.
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* a, b, c, d, e, f, g, h are the value of the image at the corresponding
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* voxels:
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*
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*
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* x z
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* | /
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* f___ __ g
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* /| /|
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* e/_|____h/ |
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* | | | |
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* | |b___|_c|
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* | / | /
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* a|/_____d|/ _y
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*
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*
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* a = val(i1, j1, k1)
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* b = val(i2, j1, k1)
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* c = val(i2, j2, k1)
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* d = val(i1, j2, k1)
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* e = val(i1, j1, k2)
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* f = val(i2, j1, k2)
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* g = val(i2, j2, k2)
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* h = val(i1, j2, k2)
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*/
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Image_word_type* ptr = (Image_word_type*)image()->data;
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ptr += i1 * dimxy + j1 * dimx + k1;
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const Target_type a = Target_type(transform(*ptr));
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const Target_type e = Target_type(transform(*(ptr+1)));
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ptr += dimxy; // i2 * dimxy + j1 * dimx + k1;
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const Target_type b = Target_type(transform(*ptr));
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const Target_type f = Target_type(transform(*(ptr+1)));
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ptr += dimx; // i2 * dimxy + j2 * dimx + k1
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const Target_type c = Target_type(transform(*ptr));
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const Target_type g = Target_type(transform(*(ptr+1)));
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ptr -= dimxy; // i1 * dimxy + j2 * dimx + k1
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const Target_type d = Target_type(transform(*ptr));
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const Target_type h = Target_type(transform(*(ptr+1)));
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// const Target_type a = ((Image_word_type*)image()->data)[i1 * dimxy + j1 * dimx + k1];
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// const Target_type b = ((Image_word_type*)image()->data)[i2 * dimxy + j1 * dimx + k1];
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// const Target_type c = ((Image_word_type*)image()->data)[i2 * dimxy + j2 * dimx + k1];
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// const Target_type d = ((Image_word_type*)image()->data)[i1 * dimxy + j2 * dimx + k1];
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// const Target_type e = ((Image_word_type*)image()->data)[i1 * dimxy + j1 * dimx + k2];
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// const Target_type f = ((Image_word_type*)image()->data)[i2 * dimxy + j1 * dimx + k2];
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// const Target_type g = ((Image_word_type*)image()->data)[i2 * dimxy + j2 * dimx + k2];
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// const Target_type h = ((Image_word_type*)image()->data)[i1 * dimxy + j2 * dimx + k2];
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// const Target_type outside = Target_type(transform(value_outside);
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// if(x < 0.f ||
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// y < 0.f ||
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// z < 0.f ||
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// i1 >= dimz ||
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// j1 >= dimy ||
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// k1 >= dimx)
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// {
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// return outside;
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// }
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// Target_type a, b, c, d, e, f, g, h;
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// if(k1 < 0) {
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// a = b = c = d = outside;
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// }
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// else {
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// if(j1 < 0) {
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// a = b = outside;
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// }
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// else {
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// if(i1 < 0)
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// a = outside;
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// else
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// a = ((Image_word_type*)image()->data)[i1 * dimxy + j1 * dimx + k1];
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// if(i2 >= dimz)
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// b = outside;
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// else
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// b = ((Image_word_type*)image()->data)[i2 * dimxy + j1 * dimx + k1];
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// }
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// if(j2 >= dimy) {
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// c = d = outside;
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// }
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// else {
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// if(i1 < 0)
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// d = outside;
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// else
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// d = ((Image_word_type*)image()->data)[i1 * dimxy + j2 * dimx + k1];
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// if(i2 >= dimz)
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// c = outside;
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// else
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// c = ((Image_word_type*)image()->data)[i2 * dimxy + j2 * dimx + k1];
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// }
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// }
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// if(k2 >= dimx) {
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// e = f = g = h = outside;
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// }
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// else {
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// if(j1 < 0) {
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// e = f = outside;
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|
// }
|
||
|
|
// else {
|
||
|
|
// if(i1 < 0)
|
||
|
|
// e = outside;
|
||
|
|
// else
|
||
|
|
// e = ((Image_word_type*)image()->data)[i1 * dimxy + j1 * dimx + k2];
|
||
|
|
|
||
|
|
// if(i2 >= dimz)
|
||
|
|
// f = outside;
|
||
|
|
// else
|
||
|
|
// f = ((Image_word_type*)image()->data)[i2 * dimxy + j1 * dimx + k2];
|
||
|
|
// }
|
||
|
|
|
||
|
|
// if(j2 >= dimy) {
|
||
|
|
// g = h = outside;
|
||
|
|
// }
|
||
|
|
// else {
|
||
|
|
// if(i1 < 0)
|
||
|
|
// h = outside;
|
||
|
|
// else
|
||
|
|
// h = ((Image_word_type*)image()->data)[i1 * dimxy + j2 * dimx + k2];
|
||
|
|
|
||
|
|
// if(i2 >= dimz)
|
||
|
|
// g = outside;
|
||
|
|
// else
|
||
|
|
// g = ((Image_word_type*)image()->data)[i2 * dimxy + j2 * dimx + k2];
|
||
|
|
// }
|
||
|
|
// }
|
||
|
|
|
||
|
|
const Target_type di2 = i2 - lz;
|
||
|
|
const Target_type di1 = lz - i1;
|
||
|
|
const Target_type dj2 = j2 - ly;
|
||
|
|
const Target_type dj1 = ly - j1;
|
||
|
|
const Target_type dk2 = k2 - lx;
|
||
|
|
const Target_type dk1 = lx - k1;
|
||
|
|
// std::cerr << di2 << " " << di1 << "\n";
|
||
|
|
// std::cerr << dj2 << " " << dj1 << "\n";
|
||
|
|
// std::cerr << dk2 << " " << dk1 << "\n";
|
||
|
|
|
||
|
|
return ( ( ( a * di2 + b * di1 ) * dj2 +
|
||
|
|
( d * di2 + c * di1 ) * dj1 ) * dk2 +
|
||
|
|
( ( e * di2 + f * di1 ) * dj2 +
|
||
|
|
( h * di2 + g * di1 ) * dj1 ) * dk1 );
|
||
|
|
} // end trilinear_interpolation
|
||
|
|
|
||
|
|
|
||
|
|
template <typename Image_word_type,
|
||
|
|
typename Coord_type,
|
||
|
|
typename Target_type,
|
||
|
|
typename Indicator_factory>
|
||
|
|
Target_type
|
||
|
|
Image_3::labellized_trilinear_interpolation
|
||
|
|
(const Coord_type& x,
|
||
|
|
const Coord_type& y,
|
||
|
|
const Coord_type& z,
|
||
|
|
const Target_type& value_outside,
|
||
|
|
const Indicator_factory indicator_factory) const
|
||
|
|
{
|
||
|
|
// Check on double/float coordinates, because (int)-0.1 gives 0
|
||
|
|
if ( x < 0 || y < 0 || z < 0 ) return value_outside;
|
||
|
|
|
||
|
|
Coord_type lx = x / image()->vx;
|
||
|
|
Coord_type ly = y / image()->vy;
|
||
|
|
Coord_type lz = z / image()->vz;
|
||
|
|
const std::size_t dimx = xdim();
|
||
|
|
const std::size_t dimy = ydim();
|
||
|
|
const std::size_t dimz = zdim();
|
||
|
|
|
||
|
|
if( lx < 0 ||
|
||
|
|
ly < 0 ||
|
||
|
|
lz < 0 ||
|
||
|
|
lz >= Coord_type(dimz-1) ||
|
||
|
|
ly >= Coord_type(dimy-1) ||
|
||
|
|
lx >= Coord_type(dimx-1))
|
||
|
|
{
|
||
|
|
return value_outside;
|
||
|
|
}
|
||
|
|
|
||
|
|
// images are indexed by (z,y,x)
|
||
|
|
const int i1 = (int)(lz);
|
||
|
|
const int j1 = (int)(ly);
|
||
|
|
const int k1 = (int)(lx);
|
||
|
|
const int i2 = i1 + 1;
|
||
|
|
const int j2 = j1 + 1;
|
||
|
|
|
||
|
|
CGAL::cpp11::array<std::size_t,8> index;
|
||
|
|
index[0] = (i1 * dimy + j1) * dimx + k1;
|
||
|
|
index[1] = index[0] + 1;
|
||
|
|
index[2] = (i1 * dimy + j2) * dimx + k1;
|
||
|
|
index[3] = index[2] + 1;
|
||
|
|
index[4] = (i2 * dimy + j1) * dimx + k1;
|
||
|
|
index[5] = index[4] + 1;
|
||
|
|
index[6] = (i2 * dimy + j2) * dimx + k1;
|
||
|
|
index[7] = index[6] + 1;
|
||
|
|
|
||
|
|
CGAL::cpp11::array<Image_word_type,8> labels;
|
||
|
|
|
||
|
|
labels[0] = ((Image_word_type*)image()->data)[index[0]];
|
||
|
|
int lc = 1;
|
||
|
|
for(int lci=1; lci<8; ++lci){
|
||
|
|
bool found = false;
|
||
|
|
Image_word_type iwt = ((Image_word_type*)image()->data)[index[lci]];
|
||
|
|
for(int lcj=0; lcj < lc; ++lcj){
|
||
|
|
if(iwt == labels[lcj]){
|
||
|
|
found = true;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if(found) continue;
|
||
|
|
labels[lc] = iwt;
|
||
|
|
++lc;
|
||
|
|
}
|
||
|
|
|
||
|
|
CGAL_HISTOGRAM_PROFILER(
|
||
|
|
"Number of labels around a vertex, Image_3::labellized_trilinear_interpolation()",
|
||
|
|
static_cast<unsigned int>(lc));
|
||
|
|
|
||
|
|
if(lc == 1) {
|
||
|
|
return static_cast<Target_type>(labels[0]);
|
||
|
|
}
|
||
|
|
|
||
|
|
double best_value = 0.;
|
||
|
|
Image_word_type best = 0;
|
||
|
|
for(int i = 0; i < lc; ++i)
|
||
|
|
{
|
||
|
|
Image_word_type iwt = labels[i];
|
||
|
|
const double r =
|
||
|
|
trilinear_interpolation<Image_word_type,double,Coord_type>(
|
||
|
|
x, y, z, value_outside, indicator_factory.indicator(iwt));
|
||
|
|
|
||
|
|
if(r > best_value) {
|
||
|
|
best = iwt;
|
||
|
|
best_value = r;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// CGAL_assertion(best_value > 0.5);
|
||
|
|
return static_cast<Target_type>(best);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // end namespace CGAL
|
||
|
|
|
||
|
|
#ifdef CGAL_HEADER_ONLY
|
||
|
|
#include <CGAL/Image_3_impl.h>
|
||
|
|
#endif // CGAL_HEADER_ONLY
|
||
|
|
|
||
|
|
#if defined(BOOST_MSVC)
|
||
|
|
# pragma warning(pop)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <CGAL/enable_warnings.h>
|
||
|
|
|
||
|
|
#endif // CGAL_IMAGE_3_H
|