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科技與工程學院
電機工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73890
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search.filters.author.高碩
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search.filters.author.Kao, Shuo
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search.filters.subject.all-sky images
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search.filters.subject.bidirectional long short-term memory
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search.filters.subject.particle image velocimetry block matching
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search.filters.subject.satellite cloud images
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search.filters.subject.全天空影像
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區塊匹配應用於雲層移動估計之全天空影像與衛星雲圖日射量估計與預測系統
(
2024
)
高碩
;
Kao, Shuo
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本文透過全天空影像及衛星雲圖的分析,來開發以影像中雲層為特徵的估計與預測系統。在全天空影像中,使用紅藍比例法擷取雲層特徵影像,並提出適應式閾值在不同背景亮度的情況下更精確地判定雲層資訊計算雲層在整張圖的占比,以及太陽周圍雲特徵分析,在衛星雲圖中使用超像素分割出觀測區域雲層並利用紅藍比例法擷取雲層資訊;透過粒子測速區塊匹配推估雲層移動情形,製作未來數分鐘至小時之雲層情況,提取雲層特徵,作為雙向長短期記憶模型之輸入,而模型輸出為日射量。使用三個評估指標來檢視模型學習情形,包含相對均方根誤差、相對平均絕對誤差與預測技巧比較估計及預測成果,其中估計與預測時長 120 分鐘實驗的相對平均絕對誤差分別可達 21.99%與 34.66%。
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