Optical distortion是所計(jì)算絕對(duì)的值, 0EasPbp TV distortion是在sreen上所的得到的相對(duì)值,只care max 及 min的差異, ZENblh8fs 因?yàn)閿?shù)碼容易調(diào)整。 WpOH1[8v TV distortion與optical distortion會(huì)依不同視場(chǎng)定義不同。
轉(zhuǎn)一個(gè)光學(xué)設(shè)計(jì)論壇里的帖子 `)kxFD_bH HG)$W 在光學(xué)設(shè)計(jì)中有人經(jīng)常碰到這樣的問題,光學(xué)鏡頭的指標(biāo)中有兩項(xiàng)對(duì)于畸變的要求 ,Y16m{<eC 3HNm`b8G4m 一個(gè)是DISTORTION,另一個(gè)是TV DISTORTION :H#D4O8UiH 5k?xBk=< 其中的TV 畸變很多人不知道它的含義,再此給大家提供以下信息供參考,看了之后TV 畸變的概念就很清楚了 GnCs_[*&r L=.@hs Y\
;hjxR- wa!z:}] What is distortion? f(\S+4 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. TH55@1W,[ e.Q'l/g Calculating formula l\!`ZhM, TV distortion (Dtv) = Δh/2h x 100 (%) Rl_1g`84 A positive value of TV distortion indicates I]42R;Sc pincushion distortion and a negative value ^W`RBrJay indicates barrel distortion. -al R8YU#D (Q 原帖網(wǎng)址:http://www.opto-tech.com/read.php?tid-3086.html 'j?H>'t{ -~*kAh