The research of automatic horizontal adjustment of stereoscopic video shooting cradle head

Qi Guo, Nan Wang, S. Bai
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引用次数: 1

Abstract

With the worldwide popular of the stereoscopic film "Avatar", stereoscopic video has become the focus of the industry, and also greatly promoted the development of stereoscopic video shooting technology. On the market nowadays, the stereoscopic video shooting cradle head gets horizontal mostly through the manual setting of the independent knobs and the legs of the tripod by observing the change of the spirit level. If the tripod is not stable enough, the camera's position and angle will change. The paper is about the automatic adjustment of the stereoscopic video shooting cradle head. The tri-axis accelerometer installed on the shooting cradle head works as the collection module of position and attitude data. The collected signal will be transmitted through the A/D conversion module to 51 series single chip microcomputer (SCM) for real-time processing. The difference value of the current angle and horizontal angle will be inputted to PID, and then produce an adjustable of duty cycle, thus we can modify the horizontality of the cradle head. By compensating and correcting the deviation angle to achieve the automatic adjustment of the cradle head's horizontal, basically satisfy the requirements of stability, accurate, fast to control system.
立体视频拍摄云台自动水平调节的研究
随着立体电影《阿凡达》在世界范围内的流行,立体视频成为业界关注的焦点,也极大地推动了立体视频拍摄技术的发展。目前市场上的立体视频拍摄云台大多是通过观察水平度的变化,通过手动设置独立旋钮和三脚架的支腿来实现水平的。如果三脚架不够稳定,相机的位置和角度就会发生变化。本文研究了立体视频拍摄云台的自动调节问题。安装在射击云台上的三轴加速度计作为位置和姿态数据的采集模块。采集到的信号将通过A/D转换模块传输到51系列单片机进行实时处理。将当前角度与水平角度的差值输入到PID中,产生一个可调的占空比,从而对云台的水平进行修改。通过对偏差角的补偿和校正,实现了云台水平的自动调节,基本满足了控制系统对稳定、准确、快速的要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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