標題: | AUTHENTICATION AND CROSS-RECOVERY OF MULTIPLE IMAGES |
作者: | Chen, Lee Shu-Teng Chen, Shang-Kuan Lin, Ja-Chen 資訊工程學系 Department of Computer Science |
關鍵字: | Cross recovery;Image authentication;Reed-Solomon codes;JPEG |
公開日期: | 1-Jul-2011 |
摘要: | This work presents an authentication and cross-recovery scheme to protect a group of n JPEG images. Given n images, the images are scaled down and then encoded using JPEG to create n recovery data. Based on a pre-determined threshold t, 2 <= t < n, the n recovery data are shared to create n shadows. Next, n authentication data are generated to identify malicious attacks on the system. Additionally, the n shadows and the n authentication data are embedded in the n JPEG codes of the n original images to form n JPEG stego codes, which can be stored in a distributed storage system. Moreover, in the daily maintenance of the storage system, the authentication data concealed inside these n JPEG stego codes are used to verify which ones have been attacked. If some (up to n - t) of the n JPEG stego codes are corrupted, the corrupted JPEG images can be recovered approximately using any t survived JPEG stego codes. Experimental results demonstrate the effectiveness of the proposed method. Comparisons with other image recovery methods are also included. |
URI: | http://hdl.handle.net/11536/21936 |
ISSN: | 1349-4198 |
期刊: | INTERNATIONAL JOURNAL OF INNOVATIVE COMPUTING INFORMATION AND CONTROL |
Volume: | 7 |
Issue: | 7A |
起始頁: | 3645 |
結束頁: | 3657 |
Appears in Collections: | Articles |