Equivalence of MTF of a turbid medium and radiative transfer field

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（2）
• 页码范围: 1-3
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201210.020101

摘要

The equivalence of the modulation transfer function (MTF) of a turbid medium and the transmitted radiance from the medium under isotropic diffuse illumination is demonstrated.MTF of a turbid medium can be fully evaluated by numerically solving a radiative transfer problem in a plane parallel medium.MTF for a homogenous single layer turbid medium is investigated as illustration.General features of the MTF in the low and high spatial frequency domains are provided through their dependence on optical thickness,single scattering albedo,asymmetrical factor,and phase function type.Depending on its optical properties,multiple light scattering in a turbid medium to some degree,degrades imaging quality.Because the medium is generally considered as a conponent of the imaging system,the modulation transfer function (MTF) is usually utilized to describe its effect on imaging.MTF is the module of the more general optical transfer function (OTF).The quantitative knowledge of MTF of a turbid medium is important in designing an imaging optical system,imaging processing,and other related applications.