title: Plasma image edge detection based on the visible camera in the EAST device.
abstract: The controlling of plasma shape and position are essential to the success of Tokamak discharge. A real-time image acquisition system was designed to obtain plasma radiation image during the discharge processes in the Experimental Advanced Superconducting Tokamak (EAST) device. The hardware structure and software design of this visible camera system are introduced in detail. According to the general structure of EAST and the layout of the observation window, spatial location of the discharging plasma in the image was measured. An improved Sobel edge detection algorithm using iterative threshold was proposed to detect plasma boundary. EAST discharge results show that the proposed method acquired plasma position and boundary with high accuracy, which is of great significance for better plasma control.
authors.affiliation: School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Tunxi Road 193, Baohe District, Hefei, 230009 Anhui Province People's Republic of China.
authors.forename: Shuangbao
authors.identifier: 0000-0001-9289-8695
authors.initials: S
authors.lastname: Shu
authors.affiliation: School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Tunxi Road 193, Baohe District, Hefei, 230009 Anhui Province People's Republic of China.
authors.forename: Chongyang
authors.initials: C
authors.lastname: Xu
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Shushan District, Hefei, 230031 Anhui Province People's Republic of China.
authors.forename: Meiwen
authors.initials: M
authors.lastname: Chen
authors.affiliation: Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Shushan District, Hefei, 230031 Anhui Province People's Republic of China ; College of Science, Donghua University, North Renmin Road 2999, Songjiang District, Shanghai, 201620 People's Republic of China.
authors.forename: Zhendong
authors.initials: Z
authors.lastname: Yang
keywords: EAST; Edge detection; Plasma image; Sobel algorithm; Tokamak