公开(公告)号：US3902798A

公开(公告)日：1975-09-02

申请号：US45159074

申请日：1974-03-15

Applicant: MAGICAM INC

Inventor： TRUMBULL DOUGLAS H ,  SLATER DAN ,  MATZA JOSEPH L ,  GALE JOHN C

IPC: B66F11/04 ,  G03B15/08 ,  H04N5/272 ,  G03B21/32

CPC classification number: H04N5/272 ,  B66F11/048 ,  G03B15/08

Abstract: A composite photography system of the registered matte type including a foreground camera movable linearly in X, Y and Z directions and in pan and tilt, and a background camera coupled with the former for corresponding movement so that the perspectives from which the cameras view their respective scenes remain substantially identical despite movement of the cameras relative to their viewed scenes. In a preferred form, the background camera views a background scene constructed on a different scale from the scale of the scene viewed by the foreground camera, and the coupling means includes scaling means for correspondingly modifying certain signals generated as functions of foreground camera movement. The scaling means also includes adjustable means for selectively changing the ratio of linear movement of the background camera relative to such movement of the foreground camera, in order to facilitate adaptation of the system for use with plural background scenes having different ratios of size relative to the foreground scene. When the background objects are in the form of a miniaturized set, the optical system of the background camera desirably includes a periscopic lens so that the camera proper can be spaced from the set. Means are provided in the mounting of the background camera for compensating for the effect of the displacement, in the typical mounting of the foreground camera, of the nodal point of its optical system from the mechanical center around which the foreground camera pivots in pan and tilt movements.

Abstract translation: 一种注册哑光类型的复合摄影系统，包括在X，Y和Z方向上以平移和倾斜方式可线性移动的前景摄像机，以及与前者相配合的用于相应运动的背景摄像机，使得摄像机从其观看它们各自的视角 尽管相机相对于他们所观看的场景的移动，场景保持基本相同。 在优选形式中，背景照相机观看与由前景相机观看的场景的尺度不同的尺度构建的背景场景，并且耦合装置包括用于相应地修改作为前景相机移动的功能而生成的某些信号的缩放装置。 缩放装置还包括用于选择性地改变背景相机相对于前景相机的这种移动的线性运动的比例的可调节装置，以便于系统适应于与具有不同比例尺寸的多个背景场景的使用相对于 前景场景。 当背景物体是小型化集合的形式时，背景照相机的光学系统期望地包括透镜，使得照相机本体可以与组间隔开。 在背景相机的安装中提供了装置，用于补偿前景相机的典型安装中的其光学系统的节点与来自机器中心的位置的影响，前置相机围绕该机械中心以平移和倾斜方式枢转 动作。