title: Range compensation for accurate 3D imaging system.
abstract: Range determination has crucial dependency of intensity over distance due to the fact that output of a range gated system is the reflectivity and range information expressed in term of intensity. From our experimental study, the analyzed trend line of reflected intensity versus range agrees with the theoretical model where it underlies an inverse range-squared dependency. Considering the energy attenuation factor for a better three-dimensional (3D) solution, a range compensation model is derived based on time slicing technique to compensate the effect imposed by distance beyond an optimum range. A range gated imaging system with pulse profile feedback is proposed in order to apply the range compensation model. Experimental results show noticeable improvement as compared to the conventional weighted average method for reflected laser pulse data across different ranges and 3D surface reconstruction using the proposed range compensation model.
authors.forename: Sing Yee
authors.initials: SY
authors.lastname: Chua
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Ningqun
authors.initials: N
authors.lastname: Guo
authors.forename: Ching Seong
authors.initials: CS
authors.lastname: Tan