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| 題 名 | 樹狀編碼技術運用於智慧財產圖像之高容量資訊隱藏嵌入機制=The High Capacity in Embedding Logo Implementing the Intellectual Property Using Tree-Oriented Coding Mechanism |
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| 作 者 | 王旭正; | 書刊名 | 國立臺灣大學工程學刊 |
| 卷 期 | 90 2004.02[民93.02] |
| 頁 次 | 頁119-126 |
| 專 輯 | 資訊工程專輯 |
| 分類號 | 312.76 |
| 關鍵詞 | 影像四元樹; 資訊隱藏法; 位元平面; Quad-tree; Information hiding; Bit-plane; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本文將提出一個以影像四元樹為編碼基礎的資訊隱藏之方法。透過我們所提出的方法,使得影像圖裡可容納更多的資料嵌入。在智慧財產的鑑別上,也提供了更大可發揮的掩護效果。本提出方法是將欲隱藏之灰階影像分解成八張位元平面,並利用其影像前幾個位元平面0與1分佈會有群聚現象,將兩兩位元平面間作XOR (Exclusive-or) 運算,再使用線性四元樹的觀念將運算後的資料進行有效BFS編碼,之後再隱藏於偽裝圖之像素最低位元,使最後藏入資料的偽裝圖影像仍呈現高度清晰的圖像顯示,也就是說PSNR的測度皆能遠大於30dB。我們並且比較近年來前人所提出的資訊嵌入隱藏技術。經實驗數據討論,在研究分析上,我們的方法的確能獲得較高的隱蔽率。因此在智慧財產圖像的嵌入處理上,提供了更佳的發揮空間。 |
| 英文摘要 | In this paper, an information hiding method is proposed, in which the quad-tree coding is considered to achieve this goal. In our method, the most significant achievement in our method is that more information can be embedded without degrading the fidelity of image. In this way, we further offer the more flexible space utilization when an intellectual logo of larger space occupation is embedded into the cover-image. The main technique applied in our method is derived from the features of the eight bit-planes of a gray image. The XOR bit-wise operation is used for two bit pixels among the neighboring bit-planes from the most significant bit to the least significant bit. Afterwards, the resulting bits are all embedded into the least significant bit of the cover-image. According to the report of PSNR measurement, the value is far greater than 30dB in our experiment. Furthermore, compared to the recent research literatures, we conclude that our proposed method is more suitable to be the applications of intellectual property on the multimedia. |
本系統中英文摘要資訊取自各篇刊載內容。