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研究生:蘇昱嘉
論文名稱:具自身可逆性的重曝隱藏機制
論文名稱(外文):DEH: Double Exposure Hiding Mechanism Based on Self-Reversibility
指導教授:李榮三李榮三引用關係
口試委員:游景盛周永振
口試日期:2014-06-26
學位類別:碩士
校院名稱:逢甲大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:28
中文關鍵詞:影像修補隱像術秘密重曝
外文關鍵詞:Inpaintingsteganographysecretdouble exposure
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受惠網際網路技術的迅速發展,使得人們彼此間的資訊傳遞與溝通更為便利與快速,然而享受資訊技術所帶來便利的同時,相對的也延伸出許多資訊安全議題。由於網際網路的環境是公開、透明的,如何安全的傳遞機密資訊而不被未授權的第三方所擷取,已經是近年來熱門的研究議題。其中,用來保護機密影像的「隱像術」便是一項極受矚目的技術,傳送方利用一張載圖影像承載秘密影像的資訊,將其傳送給收方,由於傳送的過程是以一張明碼的真實影像作傳輸,藉此矇騙攻擊者,而收方在收到該載圖影像後,可根據收送雙方制定的協定資訊,還原隱藏於載圖影像中的秘密影像。然而,在許多情況底下,這樣的技術反而引起攻擊者的注意,好比說由國防基地傳出一張明碼的風景圖,即不難引人疑竇。
本論文立基於隱像術及影像修補的技術,提出一重曝隱藏方法(DEH-Double Exposure Hiding),能針對秘密影像做重點隱藏,進而混淆攻擊者的認知,實驗結果顯示,透過該方法加密後的載圖影像能符合人類視覺系統的辨識度,且解密後的影像無失真,可應用於軍用影像的領域。
Steganography is one of the most popular techniques for protecting secret information transferred over the Internet. A secret image is embedded into a common host image before the transmission. This stego-image can help mitigate the risk of hackers&;#39; attentions. Nevertheless, this strategy cannot always work safely once the host image is totally irrelevant to the sender. For instance, a scenery image sent by the Ministry of Defense must cause much more suspicion from attackers. In this thesis, we have proposed a double exposure hiding mechanism based on the concept of inpainting. The user is allowed to encrypt parts of the important region of the secret image and embeds them into the secret image. Thus, the attackers would misunderstand the real content of the secret. Hereafter, only the legal receiver can losslessly recover the complete secret image. Experimental results have showed that the quality of stego-image is satisfactory according to the human visual perception, and the recovered image is lossless, which is suitable for military applications.
誌謝 i
摘 要 ii
Abstract iii
目錄 iv
圖目錄 v
表目錄 vi
第一章 緒論 1
1.1 研究動機 1
1.2 研究目的 4
1.3 論文架構 5
第二章 先備知識 6
2.1空照圖影像服務 6
2.2 影像修補(Inpainting) 7
2.3差異擴張法(Differencing Expansion) 9
第三章 自身可逆式資料隱藏方法-重曝隱藏 12
3.1 重曝隱藏演算法 12
3.2 重曝隱藏演算法(嵌入步驟) 12
3.3 重曝隱藏演算法(擷取步驟) 16
第四章 實驗結果 17
4.1 機密地帶藏匿實驗 17
4.2 權限控管機制 26
第五章 結論 27
參考文獻 28
[1] M. Ashikhmin, “Synthesizing natural textures,” in Proceedings of the 2001 Symposium on Interactive 3D Graphics, pp. 217-226, 2001.
[2] A. Agrawal, P. Goyal, and S. Diwakar, “Fast and enhanced algorithm for exemplar based image inpainting,” 2010 Fourth Pacific-Rim Symposium on Image and Video Technology (PSIVT), pp. 325-330, 2010.
[3] L. Barkuus and A. Dey, “Location-based services for mobile telephony: a study of users’ privacy concerns,” in 9th IFIP TC13 International Conference on Human-Computer Interaction, pp.709 -712, 2003.
[4] J. Capon, “A probabilistic model for run-length coding of pictures,” IRE Transactions on Information Theory, vol. 5, no. 4, pp. 157-163, 1959.
[5] A. Criminisi, P. Perez, and K. Toyama, “Region filling and object removal by exemplar-based image inpainting,” IEEE Transactions on Image Processing, vol. 13, no. 9, pp. 1200-1212, 2004.
[6] C. K. Chan, and L. M. Cheng, “Hiding data in images by simple LSB substitution,” Pattern Recognition, vol. 37, no. 3, pp. 469-474, 2004.
[7] T. S. Chen, C. C. Chang, and M. S. Hwang, “A virtual image cryptosystem based upon vector quantization,” IEEE Transactions on Image Processing, vol. 7, no. 10, pp. 1485-1488, 1998.
[8] R. M. Gray, “Vector Quantization,” IEEE ASSP Magazine, vol. 1, no. 2, pp. 4-29, 1984.
[9] M. J. Hutchinson, “Developing an agent-based framework for Intelligent geocoding,” thesis, Curtin University of Technology, 2010.
[10] J. Tian, “Reversible data embedding using a difference expansion,” IEEE Transactions on Circuits and Systems for Video Technology, vol. 13, no. 8, pp. 890-896, 2003.
[11] L. Y. Wei and M. Levoy, “Fast texture synthesis using tree-structured vector quantization,” in Proceedings of the 27th Annual Conference on Computer Graphics and Interactive Techniques, pp. 479-488, 2000.
[12] google map線上地圖https://www.google.com.tw/maps/preview?hl=zh-TW
[13] bing線上地圖http://www.bing.com/maps/
[14] How do you measure a military footprint?網站http://empire.is/about
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