Among the five indices of Table 3.1, those
of surface and perimeter are already known. Thus let us describe
the three remainders.
|
Index of shape (SHAPE): |
|
pJ: perimeter (m) of the object j
aJ : surface (m2) of the object j
|
|
|
Fractal index (FRACT): |
|
ln: natural log
pJ: perimeter (m) of the object j
aJ : surface (m2) of the object j
|
Interpretation: Index value varies between 1 and 2.
The more the shape of the object is complex,
the more its value approaches 2.
|
|
|
Index of
distance to nearest neighbor of the same category / class (NEAR): |
|
hij: shortest distance (m)
between the limit of the object i and
that of the nearest object j of the same category
|
|
|
Value
of the five indices of structure for the 12 objects
of the study area illustrated in Figure 3.1 |
|
|