Table 3 List of intensity features.
Features | Definition/Formula |
|---|---|
Imax | Maximum intensity |
Imean | Mean intensity |
Imin | Minimum intensity |
Imed | Median intensity |
Imed_z | Median of median absolute deviation |
Icv | Coefficient of variation.\(\frac{{I_{{{\text{s}}td}} }}{{I_{mean} }} \times 100\%\) |
Ikur | Kurtosis of intensity. The flatness of the intensity values of all points in a statistical unit |
Iske | Skewness of intensity. The distortion or symmetry state of a height frequency distribution curve |
Iaad | Average absolute deviation,\(\frac{{\sum\nolimits_{i = 1}^{n} {\left( {\left| {I_{i} - \overline{I} } \right|} \right)} }}{n}\) |
IAIH (15) | Point clouds are sorted according to the intensity. AIHX is the height of a laser point that ranks in the Ith% position in the accumulative curve |
IH (15) | Point clouds are sorted according the intensity, HX is the height of the Ith% point |
IHIQ | Intensity percentile interquartile distance,\(Int75\% - Int25\%\) |
IStdDev | Standard deviation of intensity |
IVariance | Intensity variance |
