'Return a |Tiff| instance containing the properties of the TIFF image
in *stream*.'

@classmethod
def from_stream(cls, stream):

    parser = _TiffParser.parse(stream)
    px_width = parser.px_width
    px_height = parser.px_height
    horz_dpi = parser.horz_dpi
    vert_dpi = parser.vert_dpi
    return cls(px_width, px_height, horz_dpi, vert_dpi)
