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. Author manuscript; available in PMC: 2016 Mar 4.
Published in final edited form as: Comput Help People Spec Needs. 2010 Jul;6180:229–234. doi: 10.1007/978-3-642-14100-3_34

Fig. 3.

Fig. 3

Left to right: (a) In image strip near horizon, candidate regions are selected for processing by detection algorithm. (b) Final Walk light detection, with confirmation by presence of green traffic light above.