Grabbed existing progam off github and repaired it

src/C++/OpenCV/util.h

@@ -0,0 +1,61 @@
+#ifndef __UTIL__
+#define __UTIL__
+
+#include <vector>
+#include <string>
+#include <fstream>
+#include <opencv2/dnn.hpp>
+#include <opencv2/core.hpp>
+#include <opencv2/highgui.hpp>
+
+// Get Output Layers Name
+std::vector<std::string> getOutputsNames( const cv::dnn::Net& net )
+{
+    static std::vector<std::string> names;
+    if( names.empty() ){
+        std::vector<int32_t> out_layers = net.getUnconnectedOutLayers();
+        std::vector<std::string> layers_names = net.getLayerNames();
+        names.resize( out_layers.size() );
+        for( size_t i = 0; i < out_layers.size(); ++i ){
+            names[i] = layers_names[out_layers[i] - 1];
+        }
+    }
+    return names;
+}
+
+// Get Output Layer Type
+std::string getOutputLayerType( cv::dnn::Net& net )
+{
+    const std::vector<int32_t> out_layers = net.getUnconnectedOutLayers();
+    const std::string output_layer_type = net.getLayer( out_layers[0] )->type;
+    return output_layer_type;
+}
+
+// Read Class Name List
+std::vector<std::string> readClassNameList( const std::string list_path )
+{
+    std::vector<std::string> classes;
+    std::ifstream ifs( list_path );
+    if( !ifs.is_open() ){
+        return classes;
+    }
+    std::string class_name = "";
+    while( std::getline( ifs, class_name ) ){
+        classes.push_back( class_name );
+    }
+    return classes;
+}
+
+// Get Class Color Table for Visualize
+std::vector<cv::Scalar> getClassColors( const int32_t number_of_colors )
+{
+    cv::RNG random;
+    std::vector<cv::Scalar> colors;
+    for( int32_t i = 0; i < number_of_colors; i++ ){
+        cv::Scalar color( random.uniform( 0, 255 ), random.uniform( 0, 255 ), random.uniform( 0, 255 ) );
+        colors.push_back( color );
+    }
+    return colors;
+}
+
+#endif // __UTIL__