The Calibration of High-Speed Camera Imaging System for ELMs Observation on EAST Tokamak
The Calibration of High-Speed Camera Imaging System for ELMs Observation on EAST Tokamak
复制标题
EAST托卡马克ELM观测高速相机成像系统标定
DOI：
10.1088/1009-0630/18/9/02
复制
发表时间：
2016
影响因子：
1.7
通讯作者：
Zhang Bin
中科院分区：
文献类型：
--
作者：
Yang Jianhua;Yang Zhendong;Gan Kaifu;Zhang Bin
在EAST托卡马克装置上安装了切向快速可见光相机，用于研究ELM等边缘MHD不稳定性。为了确定从CCD图像的三维信息，蔡的两个阶段的技术被用来校准高速摄像机成像系统的ELM研究。以托卡马克装置被动稳定器的瓦片为标定图形，得到了从三维世界坐标系到二维像坐标系的变换参数，包括旋转矩阵、平移矢量、焦距和透镜畸变。对标定误差进行了估计，结果表明该方法用于相机成像系统的可靠性。通过标定，从H模式CCD视频图像中获得了ELM灯丝的位置和速度等信息。
A tangential fast visible camera has been set up in EAST tokamak for the study of edge MHD instabilities such as ELM. To determine the 3-D information from CCD images, Tsai's two-stage technique was utilized to calibrate the high-speed camera imaging system for ELM study. By applying tiles of the passive stabilizers in the tokamak device as the calibration pattern, transformation parameters for transforming from a 3-D world coordinate system to a 2-D image coordinate system were obtained, including the rotation matrix, the translation vector, the focal length and the lens distortion. The calibration errors were estimated and the results indicate the reliability of the method used for the camera imaging system. Through the calibration, some information about ELM filaments, such as positions and velocities were obtained from images of H-mode CCD videos.
DOI：
10.1088/1742-6596/123/1/012002
发表时间：
2008-07
期刊：
--
影响因子：
--
作者：
N. Oyama
通讯作者：
N. Oyama