content: #!/usr/bin/env python
  '''
  This example shows how to display a SimpleCV image in a QT window
  the code was taken from the forum post here:
  http://help.simplecv.org/question/1866/any-simple-pyqt-sample-regarding-ui-or-display/
  
  Author: Rodrigo gomes 
  '''
  
  import os
  import sys
  import signal
  from PyQt4 import uic, QtGui, QtCore
  from SimpleCV import *
  
  
  try:
      _fromUtf8 = QtCore.QString.fromUtf8
  except AttributeError:
      def _fromUtf8(s):
          return s
  
  try:
      _encoding = QtGui.QApplication.UnicodeUTF8
      def _translate(context, text, disambig):
          return QtGui.QApplication.translate(context, text, disambig, _encoding)
  except AttributeError:
      def _translate(context, text, disambig):
          return QtGui.QApplication.translate(context, text, disambig)
  
  class Ui_Dialog(object):
      def setupUi(self, Dialog):
          Dialog.setObjectName(_fromUtf8("Dialog"))
          Dialog.resize(632, 483)
          self.label = QtGui.QLabel(Dialog)
          self.label.setGeometry(QtCore.QRect(80, 30, 491, 391))
          self.label.setObjectName(_fromUtf8("label"))
  
          self.retranslateUi(Dialog)
          QtCore.QMetaObject.connectSlotsByName(Dialog)
  
      def retranslateUi(self, Dialog):
          Dialog.setWindowTitle(_translate("Dialog", "Dialog", None))
  
  
  class Webcam(QtGui.QMainWindow):
      def __init__(self, parent=None):
  
          QtGui.QWidget.__init__(self,parent)        
          self.MainWindow = Ui_Dialog()
          self.MainWindow.setupUi(self)
          self.webcam = Camera(0,{ "width": 640, "height": 480 })
  
          self.timer = QtCore.QTimer()
  
          self.connect(self.timer, QtCore.SIGNAL('timeout()'), self.show_frame)
  
          self.timer.start(1);
  
      def show_frame(self):
          ipl_image = self.webcam.getImage()
          ipl_image.dl().circle((150, 75), 50, Color.RED, filled = True)
          data = ipl_image.getBitmap().tostring()
          image = QtGui.QImage(data, ipl_image.width, ipl_image.height, 3 * ipl_image.width, QtGui.QImage.Format_RGB888)
          pixmap = QtGui.QPixmap()
          pixmap.convertFromImage(image.rgbSwapped())
          self.MainWindow.label.setPixmap(pixmap)
  
  if __name__ == "__main__":
      app = QtGui.QApplication(sys.argv)
      webcam = Webcam()
      webcam.show()
      app.exec_()
  
      
  