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Recoverable Tamper Proofing Technique for Image Authentication Using Irregular Sampling Coding

  • Kuo Lung Hung
  • Chin-Chen Chang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4610)

Abstract

Digital imagery is an important medium in information processing in the digital era. However, a major problem in information processing is that digital images can be forged easily. If this problem cannot be alleviated, the popularization of digital imagery will be decreased. Hence, in recent years, a few tamper proofing or image authentication techniques have been proposed to deal with this problem. In this paper, a new recoverable image authentication technique is proposed. Our method employs a very low bit-rated compression method called irregular sampling coding to compress the image. The compressed code is then randomly embedded into the original image using the digital watermarking technique. Since the image is highly compressed, it can be used to detect and recover the tampered-with information. Experimental results show that the proposed tamper proofing technique can effectively detect and recover the modified image. In addition, the experiments also show that the proposed technique is robust. Even though the image is 90%cropped or is highly compressed using JPEG, the quality of the recovered image is acceptable. The proposed method is therefore an effective, robust and recoverable tamper proofing technique.

Keywords

Original Image Discrete Cosine Transform JPEG Compression Digital Watermark Inverse Discrete Cosine Transform 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Kuo Lung Hung
    • 1
  • Chin-Chen Chang
    • 1
  1. 1.Department of Information Management, Chaoyang Univerity of Technology 

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