| DC 欄位 |
值 |
語言 |
| DC.contributor | 資訊工程學系 | zh_TW |
| DC.creator | 翁浩宇 | zh_TW |
| DC.creator | Hao-Yu-Weng | en_US |
| dc.date.accessioned | 2024-7-3T07:39:07Z | |
| dc.date.available | 2024-7-3T07:39:07Z | |
| dc.date.issued | 2024 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=111522091 | |
| dc.contributor.department | 資訊工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 偽裝術（Steganography）與可回復式資料隱藏（Reversible Data Hiding, RDH）是廣泛用於資料隱私保護以及確保資料機密性的技術。在這類型的研究中，我們致力於提升與追求偽裝影像的不可察覺性（Imperceptibility）、不可檢測性（Undetectability）、高嵌入容量（Embedding Capacity, EC)以及優良的偽裝影像品質（Image Quality）。在本研究論文當中，我們針對 Steganography 以及 RDH 領
域提出了兩種基於 Exploiting Modification Direction (EMD)的技術，以提升其嵌入容量、影像品質並確保其不可察覺性。在第一項技術中，我們提出了一種基於時鐘調整模型（Clock Adjusted Model, CAM）的參數化多層式 EMD（Parameterized Multilayer-EMD with Clock-Adjusted Model, PMEMD-CAM）應用於 Steganography；在第二項技術中，我們提出了一種基於可控制的泛化式 EMD 應用於基於影像插值法的可回復式資訊隱藏技術（Controllable Generalized EMD on Interpolationbased RDH, CGEMD-IRDH）。這兩項技術皆利用了本研究所提出的 EMD 方法，與現有的最新技術相比，具有更高的嵌入容量與良好的影像品質。根據實驗結果顯示，兩種所提出的技術在資料嵌入容量(EC)與峰值訊號雜訊比（Peak-Signal
Noise Ratio, PSNR）方面優於現有的 Steganography 以及 IRDH 研究方法。另一方面，透過安全分析與檢測實驗，結果顯示本研究所提出的兩種技術皆兼備良好的不可檢測性。 | zh_TW |
| dc.description.abstract | Steganography and Reversible Data Hiding (RDH) are widely used techniques for protecting data privacy and ensuring data confidentiality. In such research, the desired attributes always include undetectability, imperceptibility, a high embedding capacity (EC), and excellent image quality for the stego-image. In this paper, we propose two Exploiting Modification Direction (EMD)-based approaches for Steganography and RDH to enhance imperceptibility and EC. In the first approach for Steganography, we propose a Parameterized Multilayer-EMD with Clock-Adjusted Model (PMEMD-CAM); in the second approach, an interpolation-based RDH (IRDH) with controllable generalized EMD (CGEMD-IRDH) is proposed. Both techniques take advantage of the proposed EMD techniques, resulting in a high embedding capacity and good image quality compared to the existing state-of-the-art schemes. Experimental results demonstrate that both of the proposed methods are superior to the existing Steganography and IRDH schemes in terms of EC and Peak-Signal Noise Ratio (PSNR). Furthermore, the results of security analysis indicate the good undetectability of the two proposed methods. | en_US |
| DC.subject | 偽裝學 | zh_TW |
| DC.subject | 可回復式資訊隱藏 | zh_TW |
| DC.subject | 資料容量 | zh_TW |
| DC.subject | 時鐘調整模型 | zh_TW |
| DC.subject | 影像插值 | zh_TW |
| DC.subject | Steganography | en_US |
| DC.subject | Reversible Data Hiding | en_US |
| DC.subject | Exploiting Modification Direction | en_US |
| DC.subject | Hiding Capacity | en_US |
| DC.subject | Clock Adjustment Model | en_US |
| DC.subject | Image Interpolation | en_US |
| DC.title | 植基於 EMD 的可回復式資訊隱藏與偽裝技術之研究 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Reversible Data Hiding and Steganographic Techniques Based on Exploiting Modification Direction | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |