基於三維魔術方塊的資訊隱藏方法

Data Hiding Method Based on Three-Dimensional Magic Cube

王盈翔(YING-XIANG WANG)

指導教授 ： 李金鳳

朝陽科技大學/資訊學院/資訊管理系/碩士(2018年)

摘要

本研究主要探討研究基於魔術方塊的資訊隱藏方法當中對於藏入量、影像品質以及影像穩定性，並以矩陣形樣為基礎在魔術矩陣上進行修改。本研究透過文獻探討和三維魔術方塊魔術矩陣進行研究，藉此達到在藏入資訊時更優良的能力及指標。
本研究探討的目的在於現代人生活已經無法離開物聯網。因此，如何去加強訊息傳送的安全性也成為社會大眾所關心的一個重要議題之一。而機密訊息基於安全金鑰被隱藏在原始影像當中，成為藏入後影像。所以，基於影像的資訊隱藏技術將可以進行訊息的交換。資訊隱藏技術是一種秘密通訊技術，在影像當中將會攜帶有機密訊息，使得除了發送訊息者和預期接收者之外，沒有任何人能夠得知其中的機密訊息。而高藏入量、影像品質以及安全性是非常重要的三個要素。在本研究中，每次以四個像素為一個群組，設計一個三維魔術方塊的模型，該模型的座標位置乃由四個像素所獲得的三個絕對差值所建構的模型。藉由該三維魔術方塊的座標位置指引機密訊息的藏入到差值中，並輸出藏入後影像。收方亦可由三維魔術方塊位置取出機密訊息。研究結果顯示了在與現有方法的比較下，藏入量將能夠提升至2.25 bit per pixel，而影像品質的PSNR值皆能夠維持在平均44.00 dB。此外，本方法因為運用安全金鑰，亦可確保資訊傳輸時的安全性。

關鍵字

隱寫術 ； 資訊隱藏 ； 視覺質量 ； 藏入能力

並列摘要

Newsday, Internet is a convenient tool and easy to sharing resources, and make people easy and convenient and quick contact to each other. But because of the Internet of things, our privacy might be exposed in broad daylight. Therefore, how to strengthen information security has become an important issue at present. The field of information security has experimented tremendous growth and evolution in recent years. Image data hiding technology is a secret communication which carries hidden data in such a way that no one except for the sender and intended recipients can even realize there is a hidden message. High embedding capacity, good images quality and security are three important essentials. In this research focus on the method of information data hiding based on magic cube. We explore the related work and develop a three-dimensional matrix of magic cube to achieve better embedding capacity and preserve good image quality.
In this research, a model of three-dimensional magic cube is designed by each time with four pixels as a group. The coordinate positions of four pixel group can construct three absolute differences. The three absolute differences then can build a three-dimensional magic cube as a guide of secret information hiding. The recipient can also retrieve the secret messages by mean of the 3D magic cube. The results of the proposed method are compared with other existing methods. The capacity can be increased to 2.25 bit per pixel. The image quality can achieve the average of 44.00 dB. In addition, the proposed method ensures the security of information transmission by using secure keys.

並列關鍵字

steganography ； data hiding ； visual quality ； embedded capacity

參考文獻

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