@staticmethod<EOL><INDENT>def blank_canvas(width, height):<DEDENT>
canvas = np.zeros((height, width, <NUM_LIT:3>), dtype=np.uint8)<EOL>return canvas.view(Canvas)<EOL>
Return a blank canvas to annotate.

        :param width: xdim (int)
        :param height: ydim (int)
        :returns: :class:`jicbioimage.illustrate.Canvas`