利用移動式攝影機進行前景物體之偵測 林家宇、曾逸鴻
E-mail: [email protected]
摘 要
安全監控是電腦視覺領域中一個重要的議題,現今有許多高科技的監控技術以及軟硬體設施,可供企業以及居家安全維護 來做選擇,但是並非所有方法都適用於各種不同的環境狀況,所以發展更具應用性並降低成本的監控機制是必要的。移動 式攝影機相較於傳統固定式攝影機,可減少死角及攝影機的使用數量,除可大幅降低硬體設備的成本,又可達到更勝於傳 統固定式攝影機的監控效果。本研究開發一套視訊監控系統利用移動式攝影機進行移動物體的偵測與追蹤。當攝影機在移 動時,背景會跟著改變,因此並不適合使用傳統的背景相減法來偵測前景物體。所以,本研究使用光流分析法來偵測前景 物體,並結合光流特性進行移動物體的追蹤。
關鍵詞 : 移動式攝影機;光流;移動物體偵測;背景相減
目錄
中文摘要 ...................... iii 英文摘要 ....................
.. iv 誌謝辭 ...................... v 內容目錄 ..................
.... vi 表目錄 ...................... viii 圖目錄 ................
...... ix 第一章 緒論.................... 1 第一節 研究背景與動機....
......... 1 第二節 研究目的................ 2 第三節 研究限制......
.......... 3 第四節 論文架構................ 4 第二章 文獻探討.......
........... 5 第一節 移動物體偵測.............. 5 第二節 光流偵測技術及加 速方法......... 9 第三節 移動物體追蹤.............. 13 第四節 利用光流進行移動物體 偵測........ 14 第三章 移動物體偵測................ 16 第一節 光流計算....
............ 16 第二節 光流計算之加速............. 18 第三節 前景物體偵測..
............ 32 第四節 動態調整畫面擷取頻率.......... 37 第四章 移動物體追蹤..
.............. 40 第一節 物體特徵抽取及調整........... 40 第二節 移動物體比對
............... 43 第五章 實驗結果與討論............... 46 第六章 結論.
................... 50 參考文獻 ...................... 52 參考文獻
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