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@@ -1,18 +1,40 @@
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 from wrappers import *
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-camera = Camera(CV_CAP_ANY)
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-window = Window()
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-initial = False
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+class FingerTracking:
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+  
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+  def __init__(self):
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+    self.camera = Camera(CV_CAP_ANY)
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+    self.window = Window()
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+    self.initial = False
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+    self.threshold = 50
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+    self.running = True
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-while True:
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+  def run(self):
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+    while self.running:
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+      current = self.camera.frame().grayscale()
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+      if not self.initial:
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+        self.initial = current
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+      self.window.show(current.sub(self.initial).threshold(self.threshold, mode=CV_THRESH_BINARY_INV))
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+      self._handleKeyboardEvents()
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-  current = camera.frame().grayscale().invert()
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-  if not initial:
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-    initial = current
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+  def _handleKeyboardEvents(self):  
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+    key = getKeyPressed()
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+  
0
+    if key == '\x1b': # escape
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+      self.window.destroy()
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+      self.running = False
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+  
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+    elif key == ' ':
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+      self.initial = False
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+    
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+    elif key == '+':
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+      self.threshold += 10
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+      print 'Threshold:', self.threshold
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+  
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+    elif key == '-':
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+      self.threshold -= 10
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+      print 'Threshold:', self.threshold
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-  window.show(current.sub(initial).threshold(20, mode=CV_THRESH_BINARY_INV))
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-
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-  if escape_pressed():
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-    window.destroy()
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-    break
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+if __name__ == '__main__':
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+  FingerTracking().run()
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\ No newline at end of file

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@@ -2,76 +2,76 @@ from opencv import *
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 from opencv.highgui import *
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 class Window:
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-    def __init__(self, name="Main Window"):
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-        self.name = name
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-        cvNamedWindow(name)
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-    
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-    def show(self, image):
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-        cvShowImage(self.name, image.image)
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-    
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-    def destroy(self):
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-        cvDestroyWindow(self.name)
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+  def __init__(self, name="Main Window"):
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+    self.name = name
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+    cvNamedWindow(name)
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+  
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+  def show(self, image):
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+    cvShowImage(self.name, image.image)
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+  
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+  def destroy(self):
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+    cvDestroyWindow(self.name)
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0
 class Camera:
0
     
0
-    def __init__(self, id):
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-        self.capture = cvCreateCameraCapture(id)
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-        
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-    def frame(self):
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-        return Image(cvQueryFrame(self.capture))
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+  def __init__(self, id):
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+    self.capture = cvCreateCameraCapture(id)
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+      
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+  def frame(self):
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+    return Image(cvQueryFrame(self.capture))
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0
 class Image:
0
-    
0
-    def __init__(self, image):
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-        self.image = image
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-        self.size = cvSize(image.width, image.height)
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-        
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-    def __del__(self):
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-        if self and self.image:
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-            cvReleaseImage(self.image)
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-        
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-    def grayscale(self, channels=1):
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-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvCvtColor(self.image, result, CV_RGB2GRAY)
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-        return Image(result)
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+  
0
+  def __init__(self, image):
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+    self.image = image
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+    self.size = cvSize(image.width, image.height)
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+      
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+  def __del__(self):
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+    if self and self.image:
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+      cvReleaseImage(self.image)
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+      
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+  def grayscale(self, channels=1):
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+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvCvtColor(self.image, result, CV_RGB2GRAY)
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+    return Image(result)
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0
-    def threshold(self, threshold, max_value=255, mode=CV_THRESH_BINARY, channels=1):
0
-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvThreshold(self.image, result, threshold, 255, mode)
0
-        return Image(result)
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-        
0
-    def add(self, anotherImage, channels=1):
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-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvAdd(self.image, anotherImage, result)
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-        return Image(result)
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+  def threshold(self, threshold, max_value=255, mode=CV_THRESH_BINARY, channels=1):
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+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvThreshold(self.image, result, threshold, 255, mode)
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+    return Image(result)
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+      
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+  def add(self, anotherImage, channels=1):
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+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvAdd(self.image, anotherImage, result)
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+    return Image(result)
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0
-    def sub(self, anotherImage, channels=1):
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-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvSub(self.image, anotherImage.image, result)
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-        return Image(result)
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+  def sub(self, anotherImage, channels=1):
0
+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvSub(self.image, anotherImage.image, result)
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+    return Image(result)
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0
-    def xor(self, anotherImage, channels=1):
0
-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvXor(self.image, anotherImage, result)
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-        return Image(result)
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-        
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-    def _and(self, anotherImage, channels=1):    
0
-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvAnd(self.image, anotherImage, result)
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-        return Image(result)        
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-    
0
-    def _not(self, channels=1):
0
-        result = cvCreateImage(self.size, self.image.depth, channels)
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-        cvNot(self.image, result)
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-        return Image(result)        
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+  def xor(self, anotherImage, channels=1):
0
+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvXor(self.image, anotherImage, result)
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+    return Image(result)
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0
-    def invert(self, channels=1):
0
-        return self._not(channels)
0
-        
0
-    def nand(self, anotherImage, channels=1):
0
-        return self._not(self.image)._and(anotherImage)
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+  def _and(self, anotherImage, channels=1):    
0
+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvAnd(self.image, anotherImage, result)
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+    return Image(result)        
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0
-def escape_pressed():
0
-    return cvWaitKey(10) == '\x1b'
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+  def _not(self, channels=1):
0
+    result = cvCreateImage(self.size, self.image.depth, channels)
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+    cvNot(self.image, result)
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+    return Image(result)        
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0
+  def invert(self, channels=1):
0
+    return self._not(channels)
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+    
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+  def nand(self, anotherImage, channels=1):
0
+    return self._not(self.image)._and(anotherImage)
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+
0
+def getKeyPressed(wait=10):
0
+  return cvWaitKey(wait)
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+    
0
 cvStartWindowThread()