edge_density.h
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00034 
00035 #ifndef edge_density_h_DEFINED
00036 #define edge_density_h_DEFINED
00037 
00038 #include <opencv2/core/core.hpp>
00039 #include <opencv2/imgproc/imgproc.hpp>
00040 #include <opencv2/highgui/highgui.hpp>
00041 #include "abstract_feature.h"
00042 #include <vector>
00043 #include <iostream>
00044 
00045 namespace cpl_visual_features
00046 {
00047 class EdgeDensity : public AbstractFeature<float>
00048 {
00049  public:
00050   CannyEdges() : thresh1_(2100.0), thresh2_(2300.0)
00051   {
00052   }
00053 
00054   virtual void operator()(cv::Mat& patch, cv::Rect& window)
00055   {
00056     // TODO: Should actually shrink, based on the window, don't use the whole
00057     // thing...
00058     cv::Mat edges(patch.size(), CV_8UC1);
00059     cv::Mat patch_bw(patch.size(), CV_8UC1);
00060 
00061     cv::cvtColor(patch, patch_bw, CV_BGR2GRAY);
00062     cv::Canny(patch_bw, edges, thresh1_, thresh2_, 5);
00063 
00064     float sum = 0;
00065     for (int r = 0; r < patch.rows; ++r)
00066     {
00067       for (int c = 0; c < patch.cols; ++c)
00068       {
00069         if (edge.at<uchar>(r,c) > 0)
00070           sum += 1;
00071       }
00072     }
00073     float perimeter = window.width*2 + window.height*2;
00074     descriptor_ = sum / perimeter;
00075   }
00076 
00077   virtual float getDescriptor() const
00078   {
00079     return descriptor_;
00080   }
00081 
00082  protected:
00083   float descriptor_;
00084   double thresh1_;
00085   double thresh2_;
00086 };
00087 }
00088 #endif // edge_density_h_DEFINED


cpl_visual_features
Author(s): Tucker Hermans
autogenerated on Wed Nov 27 2013 11:52:35