2013-02-252024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/662773摘要：中央氣象局氣象測站現行盛行能見度以及天氣現象觀測是經由觀測員目測並佐以能見度目標圖加以記錄，電子式能見度儀(Visibility meter)則透過水滴或氣膠對於陽光散射程度來推估能見度，兩者在氣象觀測的比對鮮見討論。中央氣象局基於天氣觀測守視技術的更新與自動化，近年來已在台灣地區部分測站裝置戶外型數位攝影機與能見度儀。本研究延續2011~2012年松山機場氣象台之以數位影像測定盛行能見度之經驗，辨視各測站影像紀錄中的明確地形地物輪廓，再和人工目視觀測紀錄和能見度儀紀錄三者進行交叉驗證。第一年目標在於針對中央氣象局現有六套戶外型數位攝影機與能見度儀器之現有影像和數據紀錄，與觀測員目視觀測三種資訊進行初步分析。第二年進一步提出具體影像分析流程與影像庫資料分類，第三年將影像分析成果結合其他氣象觀測要素，協助改進各測站在天氣現象與能見度人工觀測效果，建立客觀天氣觀測輔助技術。<br> Abstract: The prevailing visibity and weather phenomenon observation at CWB weather stations are recoreded by observabors’ eye. The principle of electronic visibility meter takes the solar scattering charactertics of aerosol & rain drop to estimate the visibility distance. The intercomparison between these two observation methods is rare globally. In order to improve the automated process of weather observation at CWB weather stations, CWB has installed several digital vedios and visibility meters for test. In this study, we will extend the experience on digital camera image proceesing for visibility estimation at Songshang airport (2011 to 2012), to idenfity the targets in different weather stations, and make intercomparison among the observabors’ eye and visibility meter. In the first year, eight sets of intercomparison will be studied. The better image processing and image dataset catetories will be provided in the second year. In the third (final) year, other observing elements will be included to improve the weather phenomenon and vibility revord by observabors’ eyes, and to approach the better skill for objective weather watch.能見度天氣現象影像分析weather phenomenonvisibilityimage analysis