ISO 17850定义的几何畸变测量

浏览：手机彩票网日期：2018-01-26

JIHESHIZHENDESHUMAXIANGJIZHUYAOSHIYOUSHEXIANGJIJINGTOUDEXIANGCHANGFANGDALVBIANHUAYINQIDE。YIBANLAISHUO，WUTIZHIJIANDEBILISHIBUCUNZAIYIGENIUQUDETUXIANG，KEYISHIFEICHANGBUSHUSHIDEYIXIEZIRANJINGWU，JIANZHU，RENWU。SHIZHENSHIYOUYIGEERWEIDITUJINXINGLEQUANMIANDEMIAOSHU，CONGYIGELIXIANGDEWUSHIZHENTUXIANGDIANZAISHIJITUXIANGNIUQUDEDIANWEIYI。TUXIANGZHONGXINTONGCHANGBEIRENWEISHIWUSHIZHENDEFANGDAXISHU；ZAIZHEIGEWEIZHISHIJISHANGDINGYILEJIAOJU。

BUTONGLEIXINGDESHIZHENTONGCHANGSHIRUHEFANGDATUXIANGLINGYUNEIDEJINGXIANGBIANHUA。TONGXINGHEZHENXINGSHIZUICHANGJIANDELEIXINGDESHIZHEN，FANGDABEISHUFENBIESHIDANDIAODIJIANDE，DANDIAOZENGJIADEYIDONGSHI，YANZHECONGZHONGXINDAOTUXIANGLINGYUDEBIANJIE。QITALEIXINGBUNENGBEIGUILEIDAOYISHANGLIANGLEIXINGTONGCHANGBEICHENGWEIBOXINGSHIZHEN。

桶形畸变（Barrel Distortion）又称桶形失真，是指光学系统引起的成像画面呈桶形膨胀状的失真现象。桶形畸变在摄影镜头成像尤其是广角镜头成像时较为常见。

枕形畸变（Pincushion Distortion）又称枕形失真，它是指光学系统引起的成像画面向中间“收缩”的现象。枕形畸变在长焦镜头成像时较为常见。

TU1 -LIANGZHONGZHUYAOLEIXINGDEJIBIAN

适用范围

ISO 17850BIAOZHUNGUIDINGLEYIZHONGCELIANGSHUMAXIANGJIJIHEJIBIANDEXIEYI。TASHIYONGYUBAOKUOSHOUJIXIANGJIZAINEIDESHUMAXIANGJIDECELIANG。

术语和定义

1、几何失真

JILUTUXIANGZHONGCONGLIXIANGWUTIDEXINGZHUANG（WEIYUYUTUXIANGPINGMIANPINGXINGDEPINGMIANSHANG）WEIYI。

ZHU1：JIHEJIBIANJIBENSHANGLAIZIYUXIANGJIJINGTOUDETUXIANGFANGDAGUOCHENGZHONGHENGXIANGFANGDADEBIANHUA，DAOZHIZHIXIANCHENGXIANWEIQUXIAN。HAIYOUQITAYINSUYINQIDEJIHESHIZHEN，LIRU，ZAIXIANGJIDECHENGXIANGGUOCHENGZHONG，YIGEJINGTOUHUOWEIZHIPIANYICHULIXUANZHUANBUDUICHENGXING。

2、图像高度

2.1图像高度

TU1TUXIANGDIANYUTUXIANGQUYUZHONGXINHUOQIXIANGDUIBIAODASHIZHIJIANDEJULI，GAIZHISHIYOUTUXIANGQUYUDUIJIAOXIANDEYIBANGUIYIHUADEZHI。

ZHU1：ZHEISHIISO 9039DINGYIDEKUOZHAN，TASHIGUANGXUEXITONGDECELIANG。

2.2实际图像高度

ZAIJILUDETUXIANGQUYUZHONGSHIJIJILUDETUXIANGDIANDETUXIANGGAODU

ZHU1：“SHIJIJILUDETUXIANGDIAN”DUIYINGYUISO 9039ZHONGDE“GUANCETUXIANGDIAN”。

ZHU2：“TUXIANGGAODU”ZAIISO 9039JIBENSHANGYIWEIZHE“SHIJITUXIANGGAODU”，DANSHIYONGSHIHUIHUNXIAO。

ZHU3：XINGRONGCI“SHIJI”SHIYONGDEYISISHIXIANGSIDE，LIRU“SHIJIDIAN”HE“SHIJIWEIZHI”。

2.3理想的图像高度

<ZAIJILUDETUXIANGMIANJILILUNDUIYINGDIANDSC >TUXIANGGAODU，JIASHEYIGEJIHESHIZHENDETUXIANGXINGCHENG

ZHU1：ZHEISHIISO 9039DINGYIDEKUOZHAN，TASHIGUANGXUEXITONGDECELIANG。

ZHU2：XINGRONGCI“LIXIANG”SHIYONGDEYISISHIXIANGSIDE，LIRU“LIXIANGDIAN”HE“LIXIANGWEIZHI”。

3、图像质量

DUITUXIANGDEZHENGTIDEYOUXIUDEYINXIANG，RENWEIGUANCHAZHEJIBUYUSHEYINGDEXINGWEIYEMIQIECANYUDEZHUTIMIAOSHU。

ZHU1：CONGDISANFANGDINGYITUXIANGZHILIANGDEMUDEDEGUANCHAYUANSHIXIAOCHUBIANYICONGXINGXIANGGANZHITEZHIFANGMIANCHUXIANDESHOUJICAIPIAOWANGHEYUWAIBUCHENGXIANGXITONGSHEJISHIKONGZHISHUXING。

4、噪音

CHENGXIANGXITONGXIANGYINGZHONGBUBIYAODEBIANHUA

5、分辨率

SHUZITUXIANGCAIJIXITONGHUOSHUZITUXIANGCAIJIXITONGDEYIGEZUCHENGBUFEN，YONGLAIQUFENTUXIANGXIJIE。

6、电视失真

线变形的IEC 61146-1定义传统电视领域的方法测量（24几何失真）或EBU tech3249 （2.11 图像高度失真）

畸变测试卡