Author: K. Ramamohan Rao
Publisher: Academic Press
ISBN: 0080925340
Category : Mathematics
Languages : en
Pages : 517
Get Book
Book Description
This is the first comprehensive treatment of the theoretical aspects of the discrete cosine transform (DCT), which is being recommended by various standards organizations, such as the CCITT, ISO etc., as the primary compression tool in digital image coding. The main purpose of the book is to provide a complete source for the user of this signal processing tool, where both the basics and the applications are detailed. An extensive bibliography covers both the theory and applications of the DCT. The novice will find the book useful in its self-contained treatment of the theory of the DCT, the detailed description of various algorithms supported by computer programs and the range of possible applications, including codecs used for teleconferencing, videophone, progressive image transmission, and broadcast TV. The more advanced user will appreciate the extensive references. Tables describing ASIC VLSI chips for implementing DCT, and motion estimation and details on image compression boards are also provided.
Author: Humberto Ochoa-Dominguez
Publisher: CRC Press
ISBN: 135139648X
Category : Technology & Engineering
Languages : en
Pages : 358
Get Book
Book Description
Many new DCT-like transforms have been proposed since the first edition of this book. For example, the integer DCT that yields integer transform coefficients, the directional DCT to take advantage of several directions of the image and the steerable DCT. The advent of higher dimensional frames such as UHDTV and 4K-TV demand for small and large transform blocks to encode small or large similar areas respectively in an efficient way. Therefore, a new updated book on DCT, adapted to the modern days, considering the new advances in this area and targeted for students, researchers and the industry is a necessity.
Author: Joana Avillez
Publisher: Penguin
ISBN: 0525558055
Category : Art
Languages : en
Pages : 112
Get Book
Book Description
A joy-inducing illustrated book about New York City in the ingenious style of William Steig's classic CDB! Just as there are few cities as storied and replete with life as New York City, there are few illustrators or writers who have charmed as many generations as William Steig. To Molly Young and Joana Avillez, a connection between the two seemed obvious, and so D C-T! ("The City!") was born. Using a playful phonetic language first invented by Steig in his now classic 1968 book CDB!--but which in today's world of text message and internet shorthand feels uncannily contemporary--Young and Avillez tell a different story on each page of this collection of illustrations stuffed to brim with humor and cleverness: • "S L-I-F!" (It's alive!) A boy shouts gleefully at a pile of rubbish seething with rats • "I M B-Z" (I'm busy) Declares the phone-wielding businesswoman to the would-be mugger • "R U I?" (Are you high?) Asks the clerk at a bodega to the blissed out shopper Brought to life in Avillez's distinctively ebullient and droll style are precocious pets and pet-owners, iconic architecture, and startlingly intrepid anthropomorphic rats. At once recognizable, and imagined like never before, are the surprising, intoxicating, and not-always-entirely-welcome sights, sounds, and smells of New York City. Full of wit, romance, and sheer delight, D C-T! is both an affectionate portrait of the visual cornucopia that is New York City and a gracious love letter to the great William Steig, sure to enchant readers young and old alike just as his work has for half a century.
Author: Ee-Leng Tan
Publisher: Springer
ISBN: 9812875433
Category : Technology & Engineering
Languages : en
Pages : 69
Get Book
Book Description
This book first introduces classic as well as recent computational models for just-noticeable-difference (JND) applications. Since the discrete cosine transform (DCT) is applied in many image and video standards (JPEG, MPEG-1/2/4, H.261/3), the book also includes a comprehensive survey of computational models for JND that are based on DCT. The visual factors used in these computational models are reviewed in detail. Further, an extensive comparative analysis of these models using quantitative and qualitative performance criteria is presented, which compares the noise shaping performance of these models with subjective evaluation and the accuracy between the estimated JND thresholds and subjective evaluation. There are many surveys available on computational models for JND; however, these surveys seldom compare the performance of computational models that are based on DCT. The authors’ survey of the computational models and their in-depth review of the visual factors used in them will help readers understand perceptual image coding based on DCT. The book also provides a comparative analysis of several perceptual image coders that are based on DCT, which are compatible with the highly popular and widely adopted JPEG standard.
Author:
Publisher:
ISBN:
Category : Temperance
Languages : en
Pages : 400
Get Book
Book Description
Author: Jim Boston
Publisher: McGraw-Hill Professional Publishing
ISBN:
Category : Computers
Languages : en
Pages : 552
Get Book
Book Description
Successfully navigate the world of DTV If you want to cut through the rampant hyperbole of digital television, and capitalize on the field's real technical opportunities, "DTV Survival Guide" 's informed, point-by-point analysis of facts vs. falsehoods is a real lifesaver. Written by Jim Boston, a digital TV expert and frequent contributor to "Broadcast Engineering" magazine, this no-nonsense book is just what you need to overcome the misconceptions. It's packed with the make-or-break information you need to smoothly handle the federally mandated transition from analog to digital broadcasting, in the best interest of your company--and your career. Offering you page after page of assistance with every key--and costly--decision you must make, the Guide gives you: * All the crystal-clear DSP details and cost analyses you need to handle DTV * Tested methods for keeping your stream away from the "error cliff" * Fail-safe insights into semantic differences among digital languages * Clarifications of key, and often obfuscated, concepts *Pointers on the right technologies for different jobs * Help in making choices that will still work tomorrow
Author: Vladimir Britanak
Publisher: Elsevier
ISBN: 0080464645
Category : Mathematics
Languages : en
Pages : 364
Get Book
Book Description
The Discrete Cosine Transform (DCT) is used in many applications by the scientific, engineering and research communities and in data compression in particular. Fast algorithms and applications of the DCT Type II (DCT-II) have become the heart of many established international image/video coding standards. Since then other forms of the DCT and Discrete Sine Transform (DST) have been investigated in detail. This new edition presents the complete set of DCT and DST discrete trigonometric transforms, including their definitions, general mathematical properties, and relations to the optimal Karhunen-Loéve transform (KLT), with the emphasis on fast algorithms (one-dimensional and two-dimensional) and integer approximations of DCTs and DSTs for their efficient implementations in the integer domain. DCTs and DSTs are real-valued transforms that map integer-valued signals to floating-point coefficients. To eliminate the floating-point operations, various methods of integer approximations have been proposed to construct and flexibly generate a family of integer DCT and DST transforms with arbitrary accuracy and performance. The integer DCTs/DSTs with low-cost and low-powered implementation can replace the corresponding real-valued transforms in wireless and satellite communication systems as well as portable computing applications. The book is essentially a detailed excursion on orthogonal/orthonormal DCT and DST matrices, their matrix factorizations and integer aproximations. It is hoped that the book will serve as a valuable reference for industry, academia and research institutes in developing integer DCTs and DSTs as well as an inspiration source for further advanced research. Presentation of the complete set of DCTs and DSTs in context of entire class of discrete unitary sinusoidal transforms: the origin, definitions, general mathematical properties, mutual relationships and relations to the optimal Karhunen-Loéve transform (KLT) Unified treatment with the fast implementations of DCTs and DSTs: the fast rotation-based algorithms derived in the form of recursive sparse matrix factorizations of a transform matrix including one- and two-dimensional cases Detailed presentation of various methods and design approaches to integer approximation of DCTs and DSTs utilizing the basic concepts of linear algebra, matrix theory and matrix computations leading to their efficient multiplierless real-time implementations, or in general reversible integer-to-integer implementations Comprehensive list of additional references reflecting recent/latest developments in the efficient implementations of DCTs and DSTs mainly one-, two-, three- and multi-dimensional fast DCT/DST algorithms including the recent active research topics for the time period from 1990 up to now
Author: Jonathan Brian Lipsher
Publisher:
ISBN:
Category :
Languages : en
Pages : 272
Get Book
Book Description
Author:
Publisher:
ISBN:
Category : Annotations and citations (Law)
Languages : en
Pages : 1448
Get Book
Book Description
Author: Vernon A. Allen
Publisher:
ISBN:
Category :
Languages : en
Pages : 142
Get Book
Book Description
