00001 #ifndef bdgl_region_algs_h_ 00002 #define bdgl_region_algs_h_ 00003 //----------------------------------------------------------------------------- 00004 //: 00005 // \file 00006 // \author J.L. Mundy 00007 // \date July 17, 2004 00008 // \brief vdgl_digital_region algorithms 00009 // 00010 // \verbatim 00011 // Modifications 00012 // 22-SEP-2004 - Peter Vanroose - bug fix: do not modify intensities of given 00013 // regions with qsort in earth_mover_distance() 00014 // \endverbatim 00015 // 00016 //----------------------------------------------------------------------------- 00017 #include <vdgl/vdgl_digital_region_sptr.h> 00018 00019 class bdgl_region_algs 00020 { 00021 bdgl_region_algs() {} //!< private default constructor: all methods are static 00022 00023 public: 00024 ~bdgl_region_algs() {} 00025 00026 //:Computes the Mahalanobis distance between two regions 00027 // Returns -1 if the distance cannot be reliably calculated. 00028 static float mahalanobis_distance(vdgl_digital_region_sptr const& r1, 00029 vdgl_digital_region_sptr const& r2); 00030 //:Computes the intensity distance between two regions 00031 // Returns -1 if the distance cannot be reliably calculated. 00032 static float intensity_distance(vdgl_digital_region_sptr const& r1, 00033 vdgl_digital_region_sptr const& r2); 00034 00035 //:Computes a variant of the earth mover's distance with respect to intensity 00036 // Returns -1 if the distance cannot be reliably calculated. 00037 static float earth_mover_distance(vdgl_digital_region_sptr const& r1, 00038 vdgl_digital_region_sptr const& r2); 00039 00040 //:Merges two digital regions and returns false if there is failure 00041 static bool merge(vdgl_digital_region_sptr const& r1, 00042 vdgl_digital_region_sptr const& r2, 00043 vdgl_digital_region_sptr& rm); 00044 }; 00045 00046 #endif
1.7.5.1