A Quick Glance at DigitalWatermarking in Medical Images -Technique Classification, Requirements, Attacks and Application of Tamper Localization

Abstract

Abstract-Digital watermarking is seen as a necessary and important field to be developed since the attacks and manipulations of digital documents and media are actively done. This paper surveys and reviews some basic theory about digital watermarking, such as the technique classification, requirements and possible attacks nowadays. Since all data in medical images are significantly important, the demand for the authentication is high. Therefore, this paper also focuses on a specific application of digital image watermarking for medical images which are tamper localization.

The Significant Impact of Biometric Watermark for Providing Image Security using DWT based Alpha Blending Watermarking Technique

“…There are a number of important characteristics that a watermark can exhibit [1,9,21,17,25,27]. These include that the watermark is difficult to notice, survives common distortions, resists malicious attacks, carries many bits of information, can coexist with other watermarks, and requires little computation to insert or detect.…”

“…Reducing the number of computations also means lower cost for computer hardware. Generally, spatial domain watermarking schemes especially LSB takes shorter time than transform domain schemes [27]. 5) Security: Watermark information owns the unique correct sign to identify, only the authorized users can legally detect, extract and even modify the watermark and thus be able to achieve the purpose of copyright protection.…”