• Low-cost, Class 1 single-phase energy meter solution • Low and cost effective capacitive power supply • External low frequency crystal for RTC • Battery backup for internal RTC • LCD interface through GPIO • Multiple tamper detection • Multiple measurement parameters • One-time, quick, and accurate digital calibration gives added benefits • Internal EEPROM to store calibration parameters, tam...

Most of digital watermarking algorithms have been designed for only single purpose. In this paper, a new multipurpose oriented stereo image watermarking algorithm is proposed for three dimensional multimedia, which can be used for copyright protection, content authentication and tamper detection in three dimensional (3D) multimedia. Specifically, host stereo image is divided into non-overlappin...

Digital watermarking in medical images can ensure the authenticity and integrity of the image. This design paper reviews some existing watermarking schemes and proposes a reversible tamper detection and recovery watermarking scheme. Watermark data from ROI (Region Of Interest) are stored in RONI (Region Of Non Interest). The embedded watermark allows tampering detection and tampered image recov...

Fragile watermarking has the characteristics where the inserted watermark should be easily breakable for a trivial tampering of the image. So, fragile watermarking technique is proposed for the purpose of authentication or tamper detection. In this paper, we propose an efficient image tamper detection method using block-wise technique which is able to detect the tamper locations. In the propose...

We propose an oblivious watermarking technique for tamper detection in digital images. By comparing correlation values from different portions of the image, the technique enables us to distinguish malicious changes, such as replacing / adding features from nonmalicious changes resulting from common image processing operations. The technique can be implemented with small memory and computational...

This paper presents a fragile watermarking technique to tamper proof (Mocap) motion capture data. The technique visualizes 3D Mocap data as a series of cluster of points. Watermarks are embedded using clusters points, where a bit is encoded in each cluster. The four point encoding mechanism uses a combination of one point encoding and three point encoding schemes. Using these schemes it is poss...

Software protection is an area of active research in which a variety of techniques have been developed to address the issue. Examples of such techniques are software watermarking, code obfuscation, and tamper detection. In this paper we present a novel dynamic software watermarking algorithm which incorporates ideas from code obfuscation and tamper detection. Our technique simultaneously provid...

In this paper we present a novel fragile watermarking scheme for the tamper-proo ng of multimedia signals. Unlike previously proposed techniques, the novel approach provides spatial and frequency domain information on how the signal is modi ed. We call such a technique a telltale tamper-proo ng method. Our design embeds a fragile watermark in the discrete wavelet domain of the signal by quantiz...

In this paper, we present two tamper-detection techniques. The rst is a fragile technique that can detect the most minor changes in a marked image using a DCT-based data hiding method to embed a tamper-detection mark. The second is a semi-fragile technique that detects the locations of signiicant manipulations while disregarding the less important eeects of image compression and additive channe...