公开(公告)号：WO1992002871A1

公开(公告)日：1992-02-20

申请号：PCT/AU1991000349

申请日：1991-08-08

Applicant: DIGITAL ARTS FILM & TELEVISION PTY. LTD. ,  EDWARDS, John, Richard

Inventor： DIGITAL ARTS FILM & TELEVISION PTY. LTD.

IPC: G05B19/41

CPC classification number: H04N5/23216 ,  F16M11/10 ,  F16M11/105 ,  F16M11/18 ,  F16M11/2014 ,  F16M11/2021 ,  F16M11/2085 ,  F16M11/28 ,  F16M11/425 ,  F16M13/027 ,  F16M2200/044 ,  G05B19/4093 ,  G05B19/416 ,  G05B19/42 ,  G05B2219/34047 ,  G05B2219/36171 ,  G05B2219/36495 ,  G05B2219/45176 ,  H04N5/222 ,  H04N5/232

Abstract: A computerised motion control apparatus for controlling a plurality of degrees of freedom of the positioning and orientation of a camera. The apparatus including a dolly (71) positionable by drive means along an extensible track arrangement (72), having a camera (73) mounted thereto and provided with motors to orientate the camera (73) by varying its pan (76), tilt (75), and roll (74). An operator interface device (15) is used to define position and velocity characteristics of the desired motion of each of the camera's axes of motion and a motor driver module (69) calculates a parametric cubic polynomial represesntation of the desired motion curve. The calculated coefficients of the motion curve parametric cubic polynomial representation are easily stored and used to regenerate the values of the curve for the purposes of display and providing motion curve values for each axis of motion of the camera. These calculations can be performed upon command and in real-time. Motion curve characteristics may be modified by way of redefining the position and velocity parameters and the values generated by a curve generator (50) may be digitally processed by a signal processing module (57). A variety of signal processing functions may be performed upon the motion curve values generated, including summation, filtering and multiplication. Digital values representative of random, periodic and aperiodic signals may be combined with each of the motion curves generated. Additionally, values of camera characteristics such as focus, film pull-down rates, shutter speed, etc. are recorded for reproduction in synchronism with the replay of the camera motion. The provision of a camera motion control apparatus having the described facilities, enables accurate repeatability of camera motion and scene recording for digital image integration to real-life recordings, multiple time scale motion and film recording techniques for special effects.

Abstract translation: 一种用于控制相机的定位和定向的多个自由度的计算机化运动控制装置。 该装置包括可沿着可伸展轨迹装置（72）由驱动装置定位的台车（71），其具有安装在其上的照相机（73），并且设有马达以通过改变相机（76）来调整相机（73）的倾斜度 75）和卷（74）。 操作者接口装置（15）用于定义每个摄像机的运动轴的期望运动的位置和速度特性，并且电动机驱动器模块（69）计算所需运动曲线的参数三次多项式代表。 运动曲线参数三次多项式表示的计算系数容易存储并用于为显示目的重新生成曲线的值，并为摄像机的每个运动轴提供运动曲线值。 这些计算可以在命令和实时执行。 可以通过重新定义位置和速度参数来修改运动曲线特征，并且由曲线生成器（50）生成的值可以由信号处理模块（57）进行数字处理。 可以对生成的运动曲线值（包括求和，滤波和乘法）执行各种信号处理功能。 代表随机，周期和非周期信号的数字值可以与所生成的每个运动曲线组合。 此外，与相机运动的重放同步地记录用于再现的诸如焦点，胶片下拉率，快门速度等的相机特性的值。 提供具有所描述的设备的相机运动控制装置能够实现相机运动和场景记录的准确重复性，用于数字图像集成到现实生活中的记录，多个时间尺度运动和用于特殊效果的胶片记录技术。