edited readme

README.md

@@ -3,6 +3,11 @@ The goal of this project is to provide a library that is useful for the stitchin
 
 ![Image stitching](samples/stitch.png "Image stitching")
 
+#### Debug capabilities
+showPointImg() - this function shows the approximate locations of barrel images. The result image is 360px wide - as the X coordinate of the images can be in the range from 0-360. The height of the image bears no such limitations-
+
+![Debug image](samples/debug.png "Debug image")
+
 ##### Prerequisites
 
 OpenCV version: 4.5.2