def track(frame, M):
    global Mat, Kx, Ky, show_x
    M = Helper.rgb2gray(M)
    direc = "y"
    if show_x:
        direc = "x"
    Signals.notify_gui(
        "frame:" + str(frame) + " M:" + str(M.shape) + " dir:" + direc)
    if show_x:
        Mat = signal.convolve2d(M, Kx, boundary='symm', mode='same')
    else:
        Mat = signal.convolve2d(M, Ky, boundary='symm', mode='same')
def track(frame, M):
    global Mat, Kx
    M = Helper.rgb2gray(M)
    Mat = signal.convolve2d(M, Kx, boundary='symm', mode='same')