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標題Title: Dual Cameras for 360-Degree Visual Surveillance
作者Authors: 王明賢,Yu-Chun Huang..等
上傳單位Department: 電機工程系
上傳時間Date: 2009-11-16
上傳者Author: 王明賢
審核單位Department: 電機工程系
審核老師Teacher: 王明賢
檔案類型Categories: 論文Thesis
關鍵詞Keyword: Omnidirectional sensor, normalized grayscale correlation, Sobel edge detection.
摘要Abstract: The work aims at providing a video surveillance system, which includes an omnidirectional sensor to get 360 degrees of view angle of vision by analyzing only single image for a wider working area, a general CCD to track moving objects for clear view, and a permanent magnet synchronous motor (PMSM) and its drive to rotate the camera. The CCD mounted with the omnidirectional sensor is first calibrated to obtain one-to-one correspondence between the image pixels through a catadioptric mirror and the locations on image plane. Its image pre-processing based on an algorithm of normalized grayscale correlation is employed to process images for motion detection. The position data of the detected object are converted to be input command of the rotating mechanism. The general CCD then executes the image tracking within the range of omnideirectional view. Instead of using normalized grayscale correlation, Sobel edge detection is adopted to determine the geometric model of the captured target and compare it with preset sample model. Finally, the experimental results validate the effectiveness of the proposed system.


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2009_11_ba883f19.doc 5870Kb doc 531 338
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