Figure3
![Towards environment perception for walking-aid robots: an improved staircase shape feature extraction method](https://image.oaes.cc/339d95c2-70e7-49a4-819a-5a9e9c666891/ir4011-3.jpg)
Figure 3. Classification of typical 2D point cloud of staircases. 2D: Two-dimensional.
Figure 3. Classification of typical 2D point cloud of staircases. 2D: Two-dimensional.
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