本篇論文是植基於JPEG2000影像壓縮技術提出一種簡單且具有強大能力偵測影像竄改錯誤的方法。其中以在JPEG2000影像壓縮過程中的離散小波轉換 （DWT） 所產生之低頻係數（即LL頻帶）為系統欲隱藏的浮水印資訊，並將此浮水印進行循環冗餘檢驗碼（CRC）編碼，透過交錯技術選擇資料隱藏的位置，藉以避免重複藏入浮水印攻擊及碼字資訊遺失問題，最後再將編碼後的碼字藏入欲保護的影像。藉由此頻帶的資料與原始影像之空間相關性及循環冗餘檢驗碼的強大偵錯能力這兩項重要特性，達到資料竄改偵測的能力，並且利用失真補償技術降低碼字藏入後所造成的失真程度，使其在影像重建後達到最佳的影像品質。根據實驗結果顯示，我們所提出的這個方法，即使在影像遭受到很大的區域竄改，也能夠正確的偵測出遭受到竄改的區域，並且能夠維持不錯的影像品質。

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