Instrumentation applications of multibit random-data representation

Optimization of Multibit Watermarking

This Chapter presents a Multibit Improved Spread Spectrum modulation (MISS) by properly adjusting the energy of the pseudo random sequences modulated by Code Division (CDM). We extend the one-bit spread spectrum watermarking approach proposed by Henrique S. Malvar and Dinei A. F. Florencio (2003) to multibit watermarking by using an optimization procedure to achieve the best performance possibl...

A comparison of apically extruded debris between conventional and 2 rotary instrumentation techniques according to the number of applications(An in vitro study)

A comparison of apically extruded debris between conventional and 2 rotary instrumentation techniques according to the number of applications(An in vitro study) Dr. MH. Zarabi* - Dr. H. Djafarzadeh** - Dr. M. Bidar** *- Associate Professor of Endodontics Dept. - Faculty of Dentistry – Mashhad University of Medical Sciences. **- Endodontist. Background and Aim: Various kinds of hand or rotary te...

Image watermarking with feature point based synchronization robust to print-scan attack

In this paper we propose a content based multibit watermarking method robust to print–scan attack. A method to extract feature points, robust in terms of watermarking, is proposed. The location of the watermark is tied to a coordinate system defined by robust feature points. A message sequence is mapped to a directional angle of periodic patterns, which are scattered and embedded into triangles...

Simplified Logic for First-Order and Second-Order Mismatch-Shaping Digital-to-Analog Converters

Mismatch-shaping digital-to-analog converters (DACs) have become widely used in high-performance delta–sigma data converters because they facilitate delta–sigma modulators with multibit quantization. Relative to single-bit quantization, multibit quantization significantly relaxes the analog circuit performance necessary to achieve a given level of data converter precision, but significant digit...

A Representation for Characteristic Functionals of Stable Random Measures with Values in Sazonov Spaces