【简答题】若使用 1/2′′ 的 CCD 摄象机来摄像,则已知成像面的尺寸为 v=4.8mm , h=6.4mm 。若监控目标物与摄象机的距离 D=2500mm ,目标物的垂直尺寸 v=330mm ,目标物的水平尺寸 H=460mm ,应选用多大焦距镜头?
【单选题】The fans were very excited that the stars they had been looked forward to ________at last.
【简答题】A.They studied variations in the appearance of the parent stars. B.They were able to see the planets with a telescope. C.They compared the parent stars to the Sun. D.They sent astronauts on a mission ...
【简答题】The cookies were all ____the form of stars.
【判断题】镜头的成像尺寸要与CCD靶面大小相对应,如果镜头的成像尺寸比摄像机靶面的尺寸小,就会影响成像,表现为成像的画面四周被镜筒遮挡。
【简答题】There were many football stars in the match. Many football stars ____ ____ ____ the match.
【判断题】镜头的成像尺寸要与CCD靶面大小相对应,如果镜头的成像尺寸比摄像机靶面的尺寸小,就会影响成像,表现为成像的画面四周被镜筒遮挡。
【判断题】镜头选择应根据目标物的大小及摄像机成像靶面的大小来选择镜头焦距的尺寸。( )
【简答题】A.They studied variations in the appearance of the parent stars. B.They were able to see the planets with a telescope. C.They compared the parent stars to the Sun. D.They sent astronauts on a mission ...
【简答题】A.They studied variations in the appearance Of' the parent stars. B.They were able to see the planets with a telescope. C.They compared the parent stars to the Sun. D.They sent astronauts on a mission...