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This book addresses the problems that hinder image authentication in the presence of noise. It considers the advantages and disadvantages of existing algorithms for image authentication and shows new approaches and solutions for robust image authentication. The state of the art algorithms are compared and, furthermore, innovative approaches and algorithms are introduced. The introduced algorithms are applied to improve image authentication, watermarking and biometry.    Aside from presenting new directions and algorithms for robust image authentication in the presence of noise, as well as image correction, this book also:   Provides an overview of the state of the art algorithms for image authentication in the presence of noise and modifications, as well as a comparison of these algorithms, Presents novel algorithms for robust image authentication, whereby the image is tried to be corrected and authenticated, Examines different views for the solution of problems connected to image authentication in the presence of noise, Shows examples, how the new techniques can be applied to image authentication, watermarking and biometry. This book is written on the one hand for students, who want to learn about image processing, authentication, watermarking and biometry, and on the other hand for engineers and researchers, who work on aspects of robustness against modifications of secure images.

Engineering. --- Signal, Image and Speech Processing. --- Multimedia Information Systems. --- Communications Engineering, Networks. --- Multimedia systems. --- Telecommunication. --- Ingénierie --- Multimédia --- Télécommunications --- Digital signatures. --- Electronic noise. --- Image transmission. --- Robust control. --- Engineering & Applied Sciences --- Electrical & Computer Engineering --- Applied Physics --- Telecommunications --- Electrical Engineering --- Robustness (Control systems) --- Noise, Electronic --- Signatures, Digital --- Picture transmission --- Multimedia information systems. --- Electrical engineering. --- Automatic control --- Signal theory (Telecommunication) --- Electric noise --- Authentication --- Data encryption (Computer science) --- Imaging systems --- Optical data processing --- Telecommunication --- Image authentication. --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Communication --- Information theory --- Telecommuting --- Computer-based multimedia information systems --- Multimedia computing --- Multimedia information systems --- Multimedia knowledge systems --- Information storage and retrieval systems --- Authentication, Image --- Authentication, Photograph --- Photograph authentication --- Image analysis --- Signal processing. --- Image processing. --- Speech processing systems. --- Electric engineering --- Engineering --- Computational linguistics --- Electronic systems --- Modulation theory --- Oral communication --- Speech --- Singing voice synthesizers --- Pictorial data processing --- Picture processing --- Processing, Image --- Processing, Signal --- Information measurement