00001 // This is mul/vimt/algo/vimt_pyramid_values_at_point.h 00002 #ifndef vimt_pyramid_values_at_point_h_ 00003 #define vimt_pyramid_values_at_point_h_ 00004 //: 00005 // \file 00006 // \brief Function to sample a point at each level of an image pyramid 00007 // \author Tim Cootes 00008 00009 #include <vimt/vimt_image_pyramid.h> 00010 #include <vimt/vimt_image_2d_of.h> 00011 #include <vgl/vgl_point_2d.h> 00012 00013 //: Use bilinear to sample from each level of the image pyramid 00014 // \param samples: Filled with image_pyr.n_levels() values 00015 // \param dummy: Used to define type of image pyramid 00016 template<class T> 00017 void vimt_pyramid_values_at_point(const vimt_image_pyramid& image_pyr, 00018 vgl_point_2d<double> p, 00019 vcl_vector<double>& samples, 00020 T dummy, int plane=0) 00021 { 00022 samples.resize(image_pyr.n_levels()); 00023 for (unsigned L=image_pyr.lo();L<=image_pyr.hi();++L) 00024 { 00025 const vimt_image_2d_of<T>& image 00026 = static_cast<const vimt_image_2d_of<T>&>(image_pyr(L)); 00027 samples[L] = vimt_bilin_interp_safe(image,p,plane); 00028 } 00029 } 00030 00031 #endif // vimt_pyramid_values_at_point_h_
1.7.5.1