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Ultrasonic waves are well-known for their broad range of applications. They can be employed in various fields of knowledge such as medicine, engineering, physics, biology, materials etc. A characteristic presented in all applications is the simplicity of the instrumentation involved, even knowing that the methods are mostly very complex, sometimes requiring analytical and numerical developments. This book presents a number of state-of-the-art applications of ultrasonic waves, developed by the main researchers in their scientific fields from all around the world. Phased array modelling, ultrasonic thrusters, positioning systems, tomography, projection, gas hydrate bearing sediments and Doppler Velocimetry are some of the topics discussed, which, together with materials characterization, mining, corrosion, and gas removal by ultrasonic techniques, form an exciting set of updated knowledge. Theoretical advances on ultrasonic waves analysis are presented in every chapter, especially in those about modelling the generation and propagation of waves, and the influence of Goldberg's number on approximation for finite amplitude acoustic waves. Readers will find this book ta valuable source of information where authors describe their works in a clear way, basing them on relevant bibliographic references and actual challenges of their field of study.
Revised to reflect technological advances and new applications, Practical Holography, Third Edition is a classic, comprehensive text suitable for anyone involved in holography, from the interested amateur to the practicing research scientist. At its most basic level, the book introduces the principles behind holography and takes the reader on a ste
Visual perception is a complex process requiring interaction between the receptors in the eye that sense the stimulus and the neural system and the brain that are responsible for communicating and interpreting the sensed visual information. This process involves several physical, neural, and cognitive phenomena whose understanding is essential to design effective and computationally efficient imaging solutions. Building on advances in computer vision, image and video processing, neuroscience, and information engineering, perceptual digital imaging greatly enhances the capabilities of traditional imaging methods. Filling a gap in the literature, Perceptual Digital Imaging: Methods and Applications comprehensively covers the system design, implementation, and application aspects of this emerging specialized area. It gives readers a strong, fundamental understanding of theory and methods, providing a foundation on which solutions for many of the most interesting and challenging imaging problems can be built. The book features contributions by renowned experts who present the state of the art and recent trends in image acquisition, processing, storage, display, and visual quality evaluation. They detail advances in the field and explore human visual system-driven approaches across a broad spectrum of applications, including: Image quality and aesthetics assessment Digital camera imaging White balancing and color enhancement Thumbnail generation Image restoration Super-resolution imaging Digital halftoning and dithering Color feature extraction Semantic multimedia analysis and processing Video shot characterization Image and video encryption Display quality enhancement This is a valuable resource for readers who want to design and implement more effective solutions for cutting-edge digital imaging, computer vision, and multimedia applications. Suitable as a graduate-level textbook or stand-alone reference for researchers and practitioners, it provides a unique overview of an important and rapidly developing research field.
The fascinating story of the transformation of American watercolor practice between 1866 and 1925 The formation of the American Watercolor Society in 1866 by a small, dedicated group of painters transformed the perception of what had long been considered a marginal medium. Artists of all ages, styles, and backgrounds took up watercolor in the 1870s, inspiring younger generations of impressionists and modernists. By the 1920s many would claim it as "the American medium." This engaging and comprehensive book tells the definitive story of the metamorphosis of American watercolor practice between 1866 and 1925, identifying the artist constituencies and social forces that drove the new popularity of the medium. The major artists of the movement - Winslow Homer, John Singer Sargent, William Trost Richards, Thomas Moran, Thomas Eakins, Charles Prendergast, Childe Hassam, Edward Hopper, Charles Demuth, and many others - are represented with lavish color illustrations. The result is a fresh and beautiful look at watercolor's central place in American art and culture.