近年來，相關使用多台攝影機的監控系統研究愈來愈熱門，因為對於監控環境中使用多台攝影機能掌握更多資訊，目前常見的入口及室內監控設備，不僅能從系統記錄的畫面中取得進出安全區域的狀況，也能對室內的情況繼續監控，且其設備成本也不算昂貴。視訊監控系統可採用的攝影機為IP（Internet Protocol）攝影機、PTZ（pan、tilt、zoom）攝影機、環場(全景)攝影機、固定型攝影機等，但不論採用何種攝影機，在架設的過程中皆須考量場地環境所產生的問題，如：
環境死角、場地光線。

我們採用三台PTZ攝影機來當作研究設備，不同於以往監控系統，並沒有使用任何固定式攝影機做為輔助。採用多PTZ的優點在於多台PTZ攝影機能夠交換目標追蹤，藉此減少死角。目標物在環境中行走時，系統觸發切換的條件為二：時間條件、低追蹤品質條件，當滿足其中一項條件時，PTZ攝影機便開始切換目標追蹤，主要的作法是根據目標物對攝影機的行進方向給予一適當的追蹤分數，根據這個分數進行攝影機目標的分配。我們制定了三種不同的追蹤分數曲線，藉此在系統決定切換目標追蹤的同時，攝影機會根據其行走的方向對環境中所有的目標物量測追蹤品質，並使用賽局理論的概念計算出其最佳分配，維持系統的整體追蹤品質在一定值。

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