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101.
Chern-Sheng Lin Tzu-Chi WeiAn-Tsung Lu San-Shan HungWei-Lung Chen Chia-Chang Chang 《Optics and Lasers in Engineering》2011,49(3):457-464
This study aimed to develop a computer game for machine vision integrated rehabilitation training system. The main function of the system is to allow users to conduct hand grasp-and-place movement through machine vision integration. Images are captured by a double-CCD camera, and then positioned on a large screen. After defining the right, left, upper, and lower boundaries of the captured images, an automatic spatial positioning technique is employed to obtain their correlation functions, and lookup tables are defined for cameras. This system can provide rehabilitation courses and games that allow users to exercise grasp-and-place movements, in order to improve their upper limb movement control, trigger trunk control, and balance training. 相似文献
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Gas puff imaging (GPI) is one of the important diagnostics for the (ITPAC international tokamak physics activity ) and entering the ITPA IDD ( international diagnostics database ) . GPI is related to many investigations, for example, edge radiations, etc. 相似文献
108.
A. López-Ortega 《General Relativity and Gravitation》2005,37(1):167-190
Some properties of the Hawking radiation emitted by the family of black holes of the Einstein–Maxwell–Dilaton with cosmologicalconstant theory in three dimensions found by Chan and Mann are studiedusing the complex paths method and the Damour–Ruffini method. Theexact values of the quasinormal frequencies of the massless Diracfield propagating on a particular black hole of this family arecalculated. Taking as a basis the results obtained for the values ofthe quasinormal frequencies the instability of some modes isdiscussed. The extension of these results to the black holes of theEinstein–Maxwell–Dilaton theory in four dimensions is studied in theappendix. 相似文献
109.
Wang Xiaoyu Wang Pingjiang Chen Jihong 《International Journal of Infrared and Millimeter Waves》2007,28(1):99-111
Infrared camera has been widely used in electrical power systems for predictive and preventive thermal fault diagnosis. Without
historical IR images being considered, most thermograph analysis used at present are concerned with static image. The dynamic
history and tendency analysis which compares the newly taken image with historical images is particularly attractive. Conclusions
can be drawn from temperature variations rather than just from anomalous thermal pattern. However the spatial distortions
prevent such dynamic analysis from being practicable. So the need to register infrared images arises. This paper proposes
an automatic registration algorithm based on closed temperature contour matching for infrared image series of a target equipment
taken at different times. Centroid Distance Function is used in image registration for the first time. The algorithm can remove
spatial distortions, bring temperature variations into prominence and endow infrared camera with dynamic analysis ability.
Experiment shows that the algorithm is simple, effective and extensible. 相似文献
110.
本文介绍了用全息干涉法诊断爆炸丝等离子体的数据处理方法。在考虑等离子体区域为轴对称的情况下,给出了由折射率计算等离子体电子密度的计算公式。在爆炸丝能量为9.6J的情况下,拍摄到了延时3μs的爆炸丝等离子体干涉图。运用计算机图象处理技术对反拍后的干涉图进行了处理,获得了较为理想的干涉图。用微机控制的线阵CCD摄像机判读了干涉条纹漂移。给出了等离子体密度随径向分布的曲线,并得到相应的等离子体密度在中心处约为1016个/cm3。 相似文献