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. 2001 Sep 25;98(20):11069–11074. doi: 10.1073/pnas.201222998

Figure 5.

Figure 5

The value function for the min-time optimal trajectory problem. The vehicle's speed profile at every point (x, y) is the unit circle displaced by the vector b(x, y) = (−0.9sin(4πx)sin(4πy)/Inline graphic)(x, y).