src/all.hh

   1 #ifndef ALL_HH_
   2 # define ALL_HH_
   3
   4 # include <mln/core/image2d.hh>
   5 # include <mln/value/rgb8.hh>
   6
   7 using mln::image2d;
   8 using mln::point2d;
   9 using mln::value::rgb8;
  10
  11 /// Load a color image from \a path.
  12 image2d<rgb8> load (const char* path);
  13 /// Save a gray-level stretched image \a img to \a path.
  14 void save (const image2d<float>& img, const char* path);
  15
  16 /// Compute the energy in \a img using the norm of the gradient.
  17 image2d<float> get_nrg (const image2d<rgb8>& img);
  18 /** Adjust an existing energy computation.  Optimized way of adjusting the
  19  *  energy in an image from which a seam has been carved.
  20  *  \param img The input image.
  21  *  \param nrg The existing energy computation of \a img.
  22  *  \param path The vertical seam which has been removed from \a img and
  23  *  from which the energy must be re-computed.
  24  */
  25 void adjust_vertical_nrg (const image2d<rgb8> img, image2d<float> nrg,
  26                           std::vector<unsigned> path);
  27 /// Compute the entropy in \a img using a 9x9 window.
  28 image2d<float> get_entropy (const image2d<rgb8>& img);
  29
  30 /** Find a vertical seam in the image.  The process only relies on the
  31  *  energy in the image.
  32  *  \param nrg The energy in the image.
  33  *  \return A vector with the points in the seam.  Let \c c be the \c r th
  34  *  value in the vector.  This means that the seam passes by the point
  35  *  (r, c) in the image.
  36  */
  37 std::vector<unsigned>
  38 find_vertical_seam (const image2d<float> nrg);
  39
  40 /** Carve a seam out of an image.
  41  *  \param img Image to modify.
  42  *  \param path Path of the seam to carve.
  43  *  \return \a img with the seam \a path carved out.
  44  */
  45 template <typename T>
  46 image2d<T>
  47 carve_vertical_seam (const image2d<T> img, const std::vector<unsigned>& path);
  48
  49 image2d<rgb8>
  50 uncarve_vertical_seam (const image2d<rgb8> img, const std::vector<unsigned>& path);
  51
  52 #endif /* !ALL_HH_ */