title: A study of photon propagation in free-space based on hybrid radiosity-radiance theorem.
abstract: Noncontact optical imaging has attracted increasing attention in recent years due to its significant advantages on detection sensitivity, spatial resolution, image quality and system simplicity compared with contact measurement. However, photon transport simulation in free-space is still an extremely challenging topic for the complexity of the optical system. For this purpose, this paper proposes an analytical model for photon propagation in free-space based on hybrid radiosity-radiance theorem (HRRT). It combines Lambert's cosine law and the radiance theorem to handle the influence of the complicated lens and to simplify the photon transport process in the optical system. The performance of the proposed model is evaluated and validated with numerical simulations and physical experiments. Qualitative comparison results of flux distribution at the detector are presented. In particular, error analysis demonstrates the feasibility and potential of the proposed model for simulating photon propagation in free-space.
authors.affiliation: Video & Image Processing System Lab, School of Electronic Engineering, Xidian University, Xi'an 710071, China.
authors.forename: Xueli
authors.initials: X
authors.lastname: Chen
authors.forename: Xinbo
authors.initials: X
authors.lastname: Gao
authors.forename: Xiaochao
authors.initials: X
authors.lastname: Qu
authors.forename: Jimin
authors.initials: J
authors.lastname: Liang
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Da'an
authors.initials: D
authors.lastname: Yang
authors.forename: Anikitos
authors.initials: A
authors.lastname: Garofalakis
authors.forename: Jorge
authors.initials: J
authors.lastname: Ripoll
authors.forename: Jie
authors.initials: J
authors.lastname: Tian