Generalized free-space diffuse photon transport model based on the influence analysis of a camera lens diaphragm

被引：12

作者：

Chen, Xueli ^{[1
,2
]}

Gao, Xinbo ^{[1
]}

Qu, Xiaochao ^{[2
]}

Chen, Duofang ^{[2
]}

Ma, Xiaopeng ^{[2
]}

Liang, Jimin ^{[2
]}

Tian, Jie ^{[2
,3
]}

机构：

[1] Xidian Univ, Sch Elect Engn, Video & Image Proc Syst Lab, Xian 710071, Shaanxi, Peoples R China

[2] Xidian Univ, Sch Life Sci & Technol, Life Sci Res Ctr, Xian 710071, Shaanxi, Peoples R China

[3] Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China

来源：

APPLIED OPTICS | 2010年 / 49卷 / 29期

基金：

中国国家自然科学基金;

关键词：

NONCONTACT OPTICAL TOMOGRAPHY; LIGHT-PROPAGATION; SCATTERING MEDIA; SIMULATION; TISSUES;

D O I：

10.1364/AO.49.005654

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The camera lens diaphragm is an important component in a noncontact optical imaging system and has a crucial influence on the images registered on the CCD camera. However, this influence has not been taken into account in the existing free-space photon transport models. To model the photon transport process more accurately, a generalized free-space photon transport model is proposed. It combines Lambertian source theory with analysis of the influence of the camera lens diaphragm to simulate photon transport process in free space. In addition, the radiance theorem is also adopted to establish the energy relationship between the virtual detector and the CCD camera. The accuracy and feasibility of the proposed model is validated with a Monte-Carlo-based free-space photon transport model and physical phantom experiment. A comparison study with our previous hybrid radiosity-radiance theorem based model demonstrates the improvement performance and potential of the proposed model for simulating photon transport process in free space. (C) 2010 Optical Society of America

引用

页码：5654 / 5664

页数：11

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