Tablet.py 文件源码

def setCorners(self):
        name_window = 'Set Corners'
        cv2.namedWindow(name_window)
        cv2.setMouseCallback(name_window, saveTabletCorners)
        cap = cv2.VideoCapture(0)
        ret, frame_from = cap.read()
        TTablet.m_CornersX = []
        TTablet.m_CornersY = []
        TTablet.m_AddFrame = np.zeros(frame_from.shape, np.uint8) 
        #print ("start setCorners")

        while(cap.isOpened()):
            ret, frame_from = cap.read()
            frame_from  = cv2.flip(frame_from, -1)
            frame = cv2.add(TTablet.m_AddFrame, frame_from)
            if ret==True:
                cv2.imshow(name_window,frame)
                #print ("fasdfasdf")
                if cv2.waitKey(1) & (len(TTablet.m_CornersX) > 3):
                    break
            else:
                break
        # Release everything if job is finished
        cap.release()
        #out.release()
        cv2.destroyAllWindows()