A Novel Fractional-Discrete-Cosine-Transform-Based Reversible Watermarking for Healthcare Information Management Systems. (23rd February 2012)

• Record Type: Journal Article
• Authors: Ko, Lu-Ting; Chen, Jwu-E; Shieh, Yaw-Shih; Scalia, Massimo; Sung, Tze-Yun
• Other Names: Li Ming Academic Editor.
• Is Part Of: Mathematical problems in engineering. Volume 2012(2012)
• Publication Date: 2012-02-23
• Subjects: Engineering mathematics -- Periodicals; 510.2462
• DOI: 10.1155/2012/757018
• Languages: English
• ISSNs: 1024-123X

Abstract

Abstract : Digital watermarking is a good tool for healthcare information management systems. The well-known quantization-index-modulation- (QIM-) based watermarking has its limitations as the host image will be destroyed; however, the recovery of medical image is essential to avoid misdiagnosis. A transparent yet reversible watermarking algorithm is required for medical image applications. In this paper, we propose a fractional-discrete-cosine-transform- (FDCT-) based watermarking to exactly reconstruct the host image. Experimental results show that the FDCT-based watermarking is preferable to the QIM-based watermarking for the medical image applications.