| 摘要 |
<p>A tread depth measurement module for measuring tread depth of a tyre; the module comprising a housing bearing at least one self-cleaning optical element adapted to cooperate with a tyre surface to clean an upper surface of the optical element, a structured light source for illuminating a tread-bearing surface of the tyre with structured light and, preferably, an analyser for analysing a captured image of the illuminated tread-bearing surface of the tyre to determine the tread depth of the tyre from reflected structured light within the captured image.</p> |
