当前位置: X-MOL 学术Color Res. Appl. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Newton method for computing the adaptation coefficient in the CIE system of mesopic photometry
Color Research and Application ( IF 1.2 ) Pub Date : 2021-06-25 , DOI: 10.1002/col.22703
Yang Xu 1 , Cheng Gao 1, 2 , Zhifeng Wang 1 , Kaida Xiao 3 , Michael Pointer 3 , Changjun Li 1
Affiliation  

A study by Gao et al found that the Newton method may not converge for certain combinations of the photopic luminance and the ratio of scotopic and photopic luminance for computing the adaptation coefficient m, for the CIE MES2 system for mesopic photometry. Hence, they proposed to use the Bisection-Newton method. In this short note, we propose the Newton method with a new initial guess for computing m. Numerical simulation has shown the proposed method not only converges, but also converges faster than the Bisection-Newton method.

中文翻译:

中视光度测量CIE系统中计算适应系数的牛顿法

Gao 等人的一项研究发现,对于 CIE MES2 系统的中视光度测量,牛顿方法可能不会收敛于某些明视亮度和用于计算适应系数m的暗视与明视亮度比的组合。因此,他们建议使用Bisection-Newton方法。在这个简短的说明中,我们提出了牛顿方法,其中包含用于计算m的新初始猜测。数值模拟表明,所提出的方法不仅收敛,而且比二分-牛顿法收敛得更快。
更新日期:2021-06-25
down
wechat
bug