[讨论]位置空间光照度与角度空间光照度 [复制链接]

请问各位同行，位置空间光照度与角度空间光照度是怎样的关系？它们之间的数学转换公式是什么？下面是一个方形通光管出来的光照度~ 7/$s!pV  
m;]glAtt  

描述:角度空间光照度

图片:angle space.JPG

o)hQ]d  
xHMbtY  

描述:位置文件光照度

图片:postition space.JPG

:*wjC.Z  
=P.m5e<  

What solid angle does that angular pixel represent? bJo)rM:m  
9aR-kcvJIJ  
To answer that question we project out from the local axis of the detector to construct a sphere some long distance away from the detector, centered on the detector. We then (conceptually) fire rays from this point at x, y angles of (5, 40), (5, 41), (6, 41), and (6, 40). Now we know that patch of area, we can compute the solid angle subtended by that angular pixel. rR4_=S<Mi:  
How is Radiant Intensity Defined aF9p%HPDw  
hwaU;>F  
5;
5DEMe  
红色标出的那句是什么意思？ -o8H_MR  
`!.)"BI/s  
]Fc<%wzp  
cGhnI&