Building Earthquake Damage Analysis Using Terrestrial Laser Scanning Data

Table 1

Common shape characteristic parameters.

Name	Expression	Description
Area	A	Polygon area
Circumference	P	Polygon circumference
Length	l	Length of the minimum enclosing rectangle (MER)
Width		Width of the MER
Aspect ratio		Length and width ratio of the MER
Tilt direction	θ	Included angle for long and polar axes of the MER
Rectangularity	R = A/AMER	Area ratio of the polygon and its MER
Compactness	C = P^2/A	Circumference square and area ratio of the polygon