Optical distortion是所計算絕對的值， 'tN25$=V&W TV distortion是在sreen上所的得到的相對值，只care max 及 min的差異， L.xZ_ 6 因為數碼容易調整。 o }Tz"bN TV distortion與optical distortion會依不同視場定義不同。
转一个光学设计论坛里的帖子 ;E~4)^ i$^)UZJ&0 在光学设计中有人经常碰到这样的问题，光学镜头的指标中有两项对于畸变的要求 ~5ZvOX6L2 -3Avs9`5 一个是DISTORTION，另一个是TV DISTORTION h9 $ Fx ZaFb*XRgS 其中的TV 畸变很多人不知道它的含义，再此给大家提供以下信息供参考，看了之后TV 畸变的概念就很清楚了 [~W`E1, D+ V7hpH- <VjJ Au e{({|V ' What is distortion? ^ /wf Xm Distortion is the ratio of the change between the center and edge areas of a captured image. Due to the aberration of the lens, the distortion is more noticeable at the edges of a captured image. There are two types of distortion: barrel distortion and pincushion distortion. The general rule is that when the absolute value of the distortion value is smaller, the lens offers higher accuracy. {"*VU3%q ,O1O8TwUB0 Calculating formula pDP xl?S TV distortion (Dtv) = Δh/2h x 100 (%) 4A{|[}! A positive value of TV distortion indicates r#WT`pav pincushion distortion and a negative value Q8p&Ki;i indicates barrel distortion. W-RqN!snJ8 v/uO&iQw5 原帖网址：http://www.opto-tech.com/read.php?tid-3086.html "wH) mQnd fBBa4"OK=
