add text demo

demos/text_demo.py

@@ -0,0 +1,46 @@
+# author:    Adam Spannbauer
+
+# USAGE
+# python text_demo.py -i ../demo_images/bridge.jpg
+# python text_demo.py -i ../demo_images/bridge.jpg -c 0
+
+# import the necessary packages
+import argparse
+import cv2
+import imutils.text
+
+# construct the argument parser and parse the arguments
+ap = argparse.ArgumentParser()
+ap.add_argument("-i", "--image", required=True, help="path to input image")
+ap.add_argument("-c", "--center", default=1, type=int,
+                help="Contrast, positive value for more contrast")
+ap.add_argument("-x", default=5,
+                help="X coordinate for text. Used if center == 0")
+ap.add_argument("-y", default=25,
+                help="Y coordinate for text. Used if center == 0")
+args = vars(ap.parse_args())
+
+# read in image to draw text on
+image = cv2.imread(args['image'])
+
+if args['center']:
+    # draw centered text with a default font
+    imutils.text.put_centered_text(image,
+                                   'imutils.text\ndemo\noutput',
+                                   font_face=cv2.FONT_HERSHEY_SIMPLEX,
+                                   font_scale=1,
+                                   color=(0, 255, 0),
+                                   thickness=2)
+else:
+    # draw location specific text with a default font
+    imutils.text.put_text(image,
+                          'imutils.text\ndemo\noutput',
+                          (args['x'], args['y']),
+                          font_face=cv2.FONT_HERSHEY_SIMPLEX,
+                          font_scale=1,
+                          color=(0, 255, 0),
+                          thickness=2)
+
+# display resulting image with text
+cv2.imshow('Image with Text', image)
+cv2.waitKey(0)