added hello world app

Author: dwaxemberg

HelloOpenCV.py

@@ -0,0 +1,17 @@
+import cv2
+import sys
+
+if len(sys.argv) != 2:
+    sys.exit("Expecting a single image file argument")
+filename = sys.argv[1]
+
+image = cv2.imread(filename)
+print image.shape
+image_small = cv2.resize(image, (800, 600))
+textColor = (0, 0, 255)  # red
+cv2.putText(image_small, "Hello World!!!", (200, 200),
+            cv2.FONT_HERSHEY_PLAIN, 3.0, textColor,
+            thickness=4, lineType=cv2.CV_AA)
+cv2.imshow('Hello World GUI', image_small)
+cv2.waitKey()
+cv2.destroyAllWindows()