KEYWORDS: Digital signal processing, Video surveillance, Imaging systems, Detection and tracking algorithms, Digital filtering, Image processing, Video, Image filtering, Video processing, Intelligence systems
This paper proposed a method which based on "the ommateum" staring system with multi-lens that had intelligence
function and nothing blind-zone surveillance. The system used six normal lens which the field of view has 65° to
encircle evenly, and made the neighboring two lens' view field have 5° overlap angles. A high speed DSP chip of
TMS320DM6446 was used to central processing the six route video which for scanning method from one to six video by
turns to realize the intelligence and real time processing. The system could track and recognition the moving object,
calculate and record the parameter of object like speed, size and moving azimuth angle. In this paper, the improved
algorithms of Auto-adapted Renewal Background Subtraction (ARBS) and the Fuzzy Auto-adapted Median Filter (FAMF) had been studied which could be detected the movement object and filter the image noise. The experiment result indicated that the staring ommateum system could be surveillance 360° scope with nothing blind-zone. The FAMF algorithm could filter the noise effectively, and the ARBS algorithm could be detection the moving object well and truly for anyone video and the parameter of object in the field of view could be calculated accurately. It had been achieved the requirement of seamless intelligence video surveillance at ultra wide range.
Fiber Bragg Grating (FBG) is a basic component in optical communications and optical sensing of strain or pressure or
temperature. In this paper, a novel geophone based on FBG is designed and used in the system of nuclear explosion
seismic wave detection. The detection principle is analyzed and the mechanical model is established. According to the
characteristics of the nuclear explosion seismic wave and the demands of the detection system, the parameters of the
novel FBG geophone are calculated, and the results show that the sensitivity coefficient is 0.54pm/ms-2 and the work
frequency bands are 0~653Hz and 2830~3266Hz. The prototype detection system is devised and tested through the
simulation seismic wave. The experiment indicates that, compared with the traditional electronic sensors, the system has
higher sensitivity and stability, the start time of the seismic wave arrived the detection position can be surveyed
accurately. Combined with the nuclear explosion detecting sub-system based on the radiation, the distance between the
bomb location and the detector can be calculated accurately.
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