--- a/python/compute-homography.py	Thu Jul 05 23:32:14 2012 -0400
+++ b/python/compute-homography.py	Fri Jul 06 01:03:52 2012 -0400
@@ -57,7 +57,9 @@
     print('''The positional argument should be the name
  of a file containing at least 4 non-colinear point coordinates (point correspondences:
  - the first two lines are the x and y coordinates in the projected space (usually world space)
- - the last two lines are the x and y coordinates in the origin space (usually image space)''')
+ - the last two lines are the x and y coordinates in the origin space (usually image space)
+
+if providing a video frame, the image points and back projected world points will be plotted''')
     sys.exit()
 
 dstPts, srcPts = cvutils.loadPointCorrespondences(args[0])