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2.0.1
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atilaromero committed Dec 16, 2018
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Expand Up @@ -114,7 +114,9 @@ \section{Laser mapping}
f(x) = 0.9786 sin(1.1 x)
\end{equation}

The applied solution requires one reading to overwrite the worldmap. In pratice, this means that the current reading prevails over previous ones.
The applied solution requires one reading to overwrite the worldmap, and the choosen parameters are such that $|f(x)| < 1$ is always true, which can be verified by using the largest possible input for x, which is 2 (two consecutive +1 readings): $f(2) = 0.7912$.

In pratice, this means that the current reading prevails over previous ones, that the values are always between -1 and +1, and that the update procedure has only two steps: sum the current readings with the worldmap and apply the attenuation function.

\section{Harmonic potential fields}
In this technique, obstacles and objectives are marked in the map as extreme opposing values. For that reason, a potential field map has to use a different set of values than the ones described in the previous section. Keeping the walls values at +1, the value for unknown areas is set to -1 and the value for free areas is set to 0, which is the opposite of what was done before.
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