کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10715646 1027328 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Motion estimation within the MPEG video compressed domain for JET plasma diagnostics
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
Motion estimation within the MPEG video compressed domain for JET plasma diagnostics
چکیده انگلیسی
Video cameras have recently become diagnostic tools widely used on Joint European Torus (JET) for fusion plasma diagnostic and control. Since video streams are usually compressed for storage, MPEG-2 compressed domain information is processed to obtain a very fast and reasonably accurate 2-D motion estimation of the video scenes for the JET diagnostics, whose computational costs are prohibitively high. These methods can be used for the manipulation of the large JET video databases and, in specific cases, even for real-time data processing. Plasma instabilities, which can trigger harmful disruptions, are detected and tracked by means of motion segmentation. Motion segmentation is used as a key contrivance to allow very fast optical flow estimation for the determination of the deuterium ice extrusion velocity of JET pellet injector. Experimental validation is performed on significant JET video data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 659, Issue 1, 11 December 2011, Pages 467-476
نویسندگان
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