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Signed-off-by: SAL (Save A Life) <[email protected]>

Application.mk

@@ -0,0 +1,6 @@
+APP_STL := gnustl_static
+APP_CPPFLAGS := -frtti -fexceptions
+APP_ABI := all
+APP_PLATFORM := android-18
+APP_OPTIM := release
+

LaneCalculations.cpp

@@ -0,0 +1,51 @@
+
+#include "LaneCalculations.h"
+#include <opencv2/core/core.hpp>
+#include <opencv2/imgproc/imgproc.hpp>
+
+#include <android/log.h>
+
+// Global static pointer used to ensure a single instance of the class.
+LaneCalculations* LaneCalculations::m_pInstance = NULL;
+
+/** This function is called to create an instance of the class.
+    Calling the constructor publicly is not allowed. The constructor
+    is private and is only called by this Instance function.
+*/
+
+LaneCalculations* LaneCalculations::Instance()
+{
+   if (!m_pInstance)   // Only allow one instance of class to be generated.
+      m_pInstance = new LaneCalculations;
+
+   return m_pInstance;
+}
+
+
+double LaneCalculations::calculateMeanLateralPosition()
+{
+  return LaneCalculations::Instance()->sumLateralPosition/LaneCalculations::Instance()->countLateralPosition;
+
+}
+
+double LaneCalculations::calculateSDLP()
+{
+  double mean = calculateMeanLateralPosition();
+
+  double sumOfVariance = 0;
+  for(int i=0; i< LaneCalculations::Instance()->countLateralPosition; i++)
+  {
+	  double temp1 = (LaneCalculations::Instance()->arrayLateralPosition[i] - mean) * (LaneCalculations::Instance()->arrayLateralPosition[i] - mean);
+	  sumOfVariance += temp1;
+
+
+  }
+
+  double variance = sumOfVariance/LaneCalculations::Instance()->countLateralPosition;
+  double sdlp = sqrt(variance); //dividing to calculate sdlp with respect to single lane
+  sdlp = floor(sdlp*100 + 0.5)/100; //rounding off to 2 d.p
+
+
+  return sdlp;
+}
+

LaneCalculations.h

@@ -0,0 +1,66 @@
+/*------------------------------------------------------------------------------------------*\
+Logging lane metrics to help in understanding driver's behavior aka SDLP
+
+\*------------------------------------------------------------------------------------------*/
+
+//#if !defined LINEF
+//#define LINEF
+
+#include <opencv2/core/core.hpp>
+#include <opencv2/imgproc/imgproc.hpp>
+
+#include <android/log.h>
+
+#define PI 3.1415926
+
+using namespace cv;
+using namespace std;
+
+class LaneCalculations {
+
+  private:
+
+	LaneCalculations()//:sumLateralPosition(0), meanLateralPosition(0), countLateralPosition(0)
+  	  {
+		sumLateralPosition = 0;
+		meanLateralPosition = 0;
+		countLateralPosition = 0;
+		arrayLateralPosition = new double[50000];
+       	__android_log_print(ANDROID_LOG_ERROR, "LANE Calculations", "Constructur : %s", "Yes called");
+
+  	  };
+
+	LaneCalculations(LaneCalculations const&){};
+	LaneCalculations& operator = (LaneCalculations const&){};
+	static LaneCalculations* m_pInstance;
+
+
+
+	//	  LineFinder() : deltaRho(1), deltaTheta(PI/180), minVote(10), minLength(0.), maxGap(0.) {}
+
+
+  public :
+
+	//Mean Lateral Position value
+		double sumLateralPosition;
+		double meanLateralPosition;
+		int countLateralPosition;
+
+		//Standard Deviation of Lateral Position (SDLP)
+		double* arrayLateralPosition;
+
+		static LaneCalculations* Instance();
+
+		double calculateMeanLateralPosition();
+		double calculateSDLP();
+
+
+
+
+
+
+
+
+};
+
+//#endif