VideoThread.py 文件源码

def annotate(self, frame):
         text = "Frame rate: %.1f" % self.frameRate
         textColor = (0,255,0)
         font = cv2.FONT_HERSHEY_SIMPLEX
         size = 0.5
         thickness = 2
         textSize = cv2.getTextSize(text, font, size, thickness)
         height = textSize[1]         
         location = (0,frame.shape[0] - 4*height)
         cv2.putText(frame, text, location, font, size, textColor,
            thickness=thickness)

         text = "Detection rate: %.1f" % self.detectionRate
         location = (0,frame.shape[0] - height)
         cv2.putText(frame, text, location, font, size, textColor,
            thickness=thickness)