Source Code for Module pyvision.gui.SimpleLiveDemo

 1  ''' 
 2  This file provides a basic framework for a live demo.  In this case the  
 3  demo is for face and eye detection. 
 4   
 5  Copyright David S. Bolme 
 6   
 7  Created on Jul 9, 2011 
 8   
 9  @author: bolme 
10  ''' 
11  import pyvision as pv 
12  import cv 
13  from pyvision.face.CascadeDetector import CascadeDetector 
14  from pyvision.face.FilterEyeLocator import FilterEyeLocator 
15   
16 -def mouseCallback(event, x, y, flags, param): 
17      if event in [cv.CV_EVENT_LBUTTONDOWN,cv.CV_EVENT_LBUTTONUP]: 
18          print "Mouse Event:",event,x,y 
19   
20  if __name__ == '__main__': 
21       
22      # Setup the webcam 
23      webcam  = pv.Webcam() 
24       
25      # Setup the face and eye detectors 
26      cd = CascadeDetector(min_size=(100,100)) 
27      el = FilterEyeLocator() 
28       
29      # Setup the mouse callback to handle mause events (optional) 
30      cv.NamedWindow("PyVision Live Demo") 
31      cv.SetMouseCallback("PyVision Live Demo", mouseCallback) 
32       
33      while True: 
34          # Grab a frame from the webcam 
35          frame = webcam.query() 
36           
37          # Run Face and Eye Detection 
38          rects = cd(frame) 
39          eyes = el(frame,rects) 
40   
41          # Annotate the result 
42          for rect,leye,reye in eyes: 
43              frame.annotateThickRect(rect, 'green', width=3) 
44              frame.annotatePoint(leye, color='green') 
45              frame.annotatePoint(reye, color='green') 
46           
47          # Annotate instructions 
48          frame.annotateLabel(pv.Point(10,10), "Press 'q' to quit.") 
49           
50          # Show the frame (uses opencv highgui) 
51          key_press = frame.show("PyVision Live Demo") 
52           
53          # Handle key press events. 
54          if key_press == ord('q'): 
55              break 
56