memory fixes

cvutils.cpp

@@ -15,7 +15,7 @@
 
 // takes the two points that are more distant from the next, ie:
 // i st distance(hull[i], hull[i+1]) is maximum and 2nd maximum
-int* max2_distance(std::vector<cv::Point> hull)
+unsigned* max2_distance(std::vector<cv::Point> hull)
 {
 #ifdef _DEBUG
 	std::cout << "Hull = ";
@@ -24,7 +24,7 @@ int* max2_distance(std::vector<cv::Point> hull)
 	}
 #endif
 	std::cout << std::endl;
-	int *idx = (int*) calloc(2, sizeof(int));
+	unsigned *idx = (unsigned*) calloc(2, sizeof(int));
 	double distance[2] = {0};
 	for( unsigned i=0; hull.size()>i; i++ )
 	{

cvutils.h

@@ -4,7 +4,7 @@
 #include <opencv2/core/core.hpp> //Any Opencv2 code
 #endif
 
-int* max2_distance(std::vector<cv::Point> hull);
+unsigned* max2_distance(std::vector<cv::Point> hull);
 
 bool
 similar_fit(cv::Point a, cv::Point b, cv::Point newpoint);

lines.cpp

@@ -21,8 +21,6 @@ auto MAGENTA = cv::Scalar(110,10,200);
 auto BROWN = cv::Scalar(90,100,60);
 
 
-
-
 int main(int argc, char *argv[])
 {
 	char const *fname = "files/masckera.png";
@@ -66,7 +64,7 @@ int main(int argc, char *argv[])
 	cv::convexHull(cv::Mat(contour),hull,false);
 
 	//these are the "horizontal" lines
-	int *maxdistances = max2_distance(hull);
+	unsigned *maxdistances = max2_distance(hull);
 	cv::Point corn_1, corn_2, corn_3, corn_4;
 	corn_1 = hull[maxdistances[0]];
 	corn_2 = hull[(maxdistances[0]+1)%hull.size()];
@@ -88,7 +86,11 @@ int main(int argc, char *argv[])
 
 	std::vector<std::vector<cv::Point>> verticals;
 	verticals.push_back(find_longest_line(hull, (maxdistances[0]+1)%hull.size(), maxdistances[1]));
+	std::cout << maxdistances[1] << std::endl;
+	std::cout << maxdistances[1]+1 << std::endl;
+	std::cout << (maxdistances[1]+1)%hull.size() << std::endl;
 	verticals.push_back(find_longest_line(hull, (maxdistances[1]+1)%hull.size(), maxdistances[0]));
+	free(maxdistances);
 
 #ifdef _DEBUG
 	//img = cv::imread(fname,CV_LOAD_IMAGE_COLOR); // uncomment to this to display image with colors
@@ -111,6 +113,7 @@ int main(int argc, char *argv[])
 		if( cv::waitKey(0) == 113 )
 			break;
 	}
+	img.release();
 #endif
 
 	// theta is the angle of the line connecting point 1 and 2; it will be the