More refinement on alignment code

Author: spmallick

ImageAlignment-FeatureBased/align.cpp

@@ -6,7 +6,7 @@ using namespace std;
 using namespace cv;
 using namespace cv::xfeatures2d;
 
-const int MAX_MATCHES = 500;
+const int MAX_FEATURES = 500;
 const float GOOD_MATCH_PERCENT = 0.15f;
 
 
@@ -24,7 +24,7 @@ void alignImages(Mat &im1, Mat &im2, Mat &im1Reg, Mat &h)
   Mat descriptors1, descriptors2;
 
   // Detect ORB features and compute descriptors.
-  Ptr<Feature2D> orb = ORB::create(MAX_MATCHES);
+  Ptr<Feature2D> orb = ORB::create(MAX_FEATURES);
   orb->detectAndCompute(im1Gray, Mat(), keypoints1, descriptors1);
   orb->detectAndCompute(im2Gray, Mat(), keypoints2, descriptors2);