Figure4
![Towards environment perception for walking-aid robots: an improved staircase shape feature extraction method](https://image.oaes.cc/339d95c2-70e7-49a4-819a-5a9e9c666891/ir4011-4.jpg)
Figure 4. The experiment setup for evaluating the proposed staircase feature extraction method. IMU: Inertial measurement unit.
Figure 4. The experiment setup for evaluating the proposed staircase feature extraction method. IMU: Inertial measurement unit.
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