Optical distortion是所計算絕對的值， G^ ZkY TV distortion是在sreen上所的得到的相對值，只care max 及 min的差異， _*$B|%k 因為數碼容易調整。 thPH_DW>eb TV distortion與optical distortion會依不同視場定義不同。
TVdistortion是等比例放大失真，是线性的的关系。所以并没有变形。 O mh&)|Iql 这个要结合distortion的曲线和grid一块看。 b)hOz x 我猜是这样的
wuchaocumt
2009-05-19 14:37
17楼的是正解！！
hit1001
2009-06-11 18:52
学习了 长知识了 谢谢哈
jacqueline
2010-10-09 10:53
转一个光学设计论坛里的帖子 "4k=(R? F}B/-".^ 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 Cb%.C;q 8P<UO 一个是DISTORTION，另一个是TV DISTORTION YV3TxvX MR x$5nLS2. 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 KpbZnW}g `^ bvj]>l SeZT4y*= ,Z*3,/a What is distortion? 1|EU5< 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. M`C~6Mf+ n|mJE,N Calculating formula i3 l #~ TV distortion (Dtv) = Δh/2h x 100 (%) K!D_PxV A positive value of TV distortion indicates 'q};L 6 pincushion distortion and a negative value ]k`Fl," indicates barrel distortion.
TCK I sp U!t-n67 原帖网址：http://www.opto-tech.com/read.php?tid-3086.html %hQMC'c O^R:_vb3I
