3D building reconstruction from airborne lidar point clouds fused with aerial imagery - Urban Remote Sensing: Monitoring, Synthesis and Modeling in the Urban Environment - page 82

B ∗

R ∗

B ∗

B

B

C

∗

B 2

B ∗

R ∗

A

A

(a) (b) (c) (d)

FIGURE 6.16 The reconstructed building with a gable roof.

D

D

D

C

B

B

(a) (b) (c) (d)

FIGURE 6.17 The reconstructed building with a complex roof having four planar surfaces.

(b)

(c)

After refinement Before refinement

(a) (d)

FIGURE 6.18 (a) Refined building roof boundaries, (b) Detected planer surfaces of roofs, (c) accurately located rood
boundaries, (d) 3D reconstructed buildings overlaid on the aerial image.