Determination of Building Model Key Points Using Multidirectional Shaded Relief Images Generated from Airborne LiDAR Data

Table 1

Parameters and corresponding thresholds for building extraction.

Procedure		Parameter	Threshold value
Marker-controlled watershed	FBM	Morphological filter	5 × 5
	BGM	Binarization	Mode + 5
	Modified mask	Slope ()	200
		Std. dev ()	±20
Extracting Building data		Height	Mode + 3
		Area	75 < Area < 3,750
		Std. dev	±1