人類經濟、文化活動多集中於沿海地區。全球許多重要的經濟脈絡和高密度人口活動之大城幾乎與海岸比鄰而居。故瞭解海洋環境對處於海島型國家的台灣而言是相當重要的，因此本文發展一套近岸影像觀測系統來對波浪影像進行分析的動作，得到一些有用的海洋環境資訊。
本文的研究方式可分為三種，首先運用直接線性轉換的原理進行攝影機的內部校正與外部校正，經校正實驗後把所拍攝的影像轉換成平行水平面的正投影圖，並應用轉換過後的影像觀察海岸線的變化，比較不同時期海岸線的情形。第二種是把觀測站的影像資料進行處理，得到西子灣海岸平均影像與曝光影像。並經過長期的影像資料收集，分析水下沙洲的量化情形與觀察碎波帶範圍。第三種是運用影像像素強度的變化與時間的觀係，對波浪進行分析。並獲得波浪的平均週期與溯升距離…等資訊。

The human economic and culture activities are centered on coastland. Many economic globalizations and high-density population cities are located seacoast. Thus, it is very important for inland country such as Taiwan. This paper was to develop a nearshore observation system to analyze optical data and acquire some ocean environmental information.
This study including following three methods: First was applicated of direct linear transformation (DLT) to calibrate intrinsic and extrinsic of the camera model. After calibrating, the different period translation of coastline can be observed normalized-image in paralleling with the sea surface. Second, to carried long-term on the observation station image material processing, obtains the His-tzu-wan seacoast average and the exposure image to observe the breaking wave area and analysis submarine sandbar quantification situation. The third to utilize pixel time series products to analyze waves and currents. Then, the wave period and run-up distance data can be observed.

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