[Retracted] Design and Research of Building Indoor Environment Monitoring System Relying on 3D Modeling and Image Processing

Figure 1

SPIN protocol working process. (a) Broadcasting ADV. (b) Data request. (c) Sending data. (d) Broadcasting ADV. (e) Data request. (f) Sending data.

(a)

(b)

(c)

(d)

(e)

(f)