Image Data Compression
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Jpeg
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Author : William B. Pennebaker
language : en
Publisher: Springer Science & Business Media
Release Date : 1992-12-31
Jpeg written by William B. Pennebaker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-12-31 with Computers categories.
Created by the Joint Photographic Experts Group (JPEG), the JPEG standard is the first color still image data compression international standard. This new guide to JPEG and its technologies offers detailed information on the new JPEG signaling conventions and the structure of JPEG compressed data.
A Study Of Color Image Data Compression
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Author : Vassilis Koutsogiannis
language : en
Publisher:
Release Date : 1992
A Study Of Color Image Data Compression written by Vassilis Koutsogiannis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Data compression (Computer science) categories.
"The space which black and white or color images require to be stored introduces one of the biggest problems in the field of Graphic Arts. A solution to this problem is offered through the use of software programs that compress the data of a scanned image. Compressing images without any consideration can create other problems. These problems arise because each image has a different structure . It is possible to classify images into three main categories using as a criterion the frequencies the images contain. The first category includes images that contain high frequencies -a lot of detail and very small uniform areas. The second category includes images with fewer frequencies - less detail and larger uniform areas. The third includes images with low frequencies - just a few (or no) details and large uniform areas. The main goal of this study was to set compression ratio standards according to the structure of the images. A software program that does data compression was used. Three 35 mm slides were used as well. The slides have been chosen carefully so that the main topics were composed of frequencies in distinct ranges. All of the images were scanned at 300 pixels per inch. Then all of the images were compressed at three specific compression ratios (5:1, 8:1, and 14:1) and then printed. Output size was 5x7 inches, the resolution was 256 dpi, and halftones were 150 lines per inch (LPI). A group of forty people (twenty professionals and twenty novices) compared the control image (non compressed image) with each of the compressed images. The Chi square test was used to analyze the data. The results indicate that it is acceptable to compress images with low detail (like the image Shaving Material) and medium detail (like the image Three Amigos) up to fourteen to one (14:1), because any loss of data is apparently not detectable by the human eye. On the other hand, images which contain a lot of detail (like the image Doll), can not be compressed using the above (14:1) compression ratio without any loss of information being detected. However these images can be compressed up to 8:1, and any loss of detail up to this compression ratio will not be detected."--Abstract.
Document And Image Compression
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Author : Mauro Barni
language : en
Publisher: CRC Press
Release Date : 2018-10-08
Document And Image Compression written by Mauro Barni and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with Technology & Engineering categories.
Although it's true that image compression research is a mature field, continued improvements in computing power and image representation tools keep the field spry. Faster processors enable previously intractable compression algorithms and schemes, and certainly the demand for highly portable high-quality images will not abate. Document and Image Compression highlights the current state of the field along with the most probable and promising future research directions for image coding. Organized into three broad sections, the book examines the currently available techniques, future directions, and techniques for specific classes of images. It begins with an introduction to multiresolution image representation, advanced coding and modeling techniques, and the basics of perceptual image coding. This leads to discussions of the JPEG 2000 and JPEG-LS standards, lossless coding, and fractal image compression. New directions are highlighted that involve image coding and representation paradigms beyond the wavelet-based framework, the use of redundant dictionaries, the distributed source coding paradigm, and novel data-hiding techniques. The book concludes with techniques developed for classes of images where the general-purpose algorithms fail, such as for binary images and shapes, compound documents, remote sensing images, medical images, and VLSI layout image data. Contributed by international experts, Document and Image Compression gathers the latest and most important developments in image coding into a single, convenient, and authoritative source.
Digital Image Compression Techniques
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Author : Majid Rabbani
language : en
Publisher: SPIE-International Society for Optical Engineering
Release Date : 1991
Digital Image Compression Techniques written by Majid Rabbani and has been published by SPIE-International Society for Optical Engineering this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Computers categories.
In order to utilize digital images effectively, specific techniques are needed to reduce the number of bits required for their representation. This Tutorial Text provides the groundwork for understanding these image compression tecniques and presents a number of different schemes that have proven useful. The algorithms discussed in this book are concerned mainly with the compression of still-frame, continuous-tone, monochrome and color images, but some of the techniques, such as arithmetic coding, have found widespread use in the compression of bilevel images. Both lossless (bit-preserving) and lossy techniques are considered. A detailed description of the compression algorithm proposed as the world standard (the JPEG baseline algorithm) is provided. The book contains approximately 30 pages of reconstructed and error images illustrating the effect of each compression technique on a consistent image set, thus allowing for a direct comparison of bit rates and reconstucted image quality. For each algorithm, issues such as quality vs. bit rate, implementation complexity, and susceptibility to channel errors are considered.
Digital Image Compression
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Author : Weidong Kou
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-14
Digital Image Compression written by Weidong Kou and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-14 with Computers categories.
Digital image business applications are expanding rapidly, driven by recent advances in the technology and breakthroughs in the price and performance of hardware and firmware. This ever increasing need for the storage and transmission of images has in turn driven the technology of image compression: image data rate reduction to save storage space and reduce transmission rate requirements. Digital image compression offers a solution to a variety of imaging applications that require a vast amount of data to represent the images, such as document imaging management systems, facsimile transmission, image archiving, remote sensing, medical imaging, entertainment, HDTV, broadcasting, education and video teleconferencing. Digital Image Compression: Algorithms and Standards introduces the reader to compression algorithms, including the CCITT facsimile standards T.4 and T.6, JBIG, CCITT H.261 and MPEG standards. The book provides comprehensive explanations of the principles and concepts of the algorithms, helping the readers' understanding and allowing them to use the standards in business, product development and R&D. Audience: A valuable reference for the graduate student, researcher and engineer. May also be used as a text for a course on the subject.
Comparison Of Lossless Image Compression Techniques Based On Context Modeling
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Author : Mohammad El-Ghoboushi
language : en
Publisher: GRIN Verlag
Release Date : 2015-03-31
Comparison Of Lossless Image Compression Techniques Based On Context Modeling written by Mohammad El-Ghoboushi and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-31 with Computers categories.
Master's Thesis from the year 2014 in the subject Computer Science - Software, , course: Image Processing, language: English, abstract: In this thesis various methods for lossless compression of source image data are analyzed and discussed. The main focus in this work is lossless compression algorithms based on context modeling using tree structure. We are going to compare CALIC, GCT-I algorithms to the JPEG2000 standard algorithm which will be considered the reference of comparison. This work includes research on how to modify CALIC algorithm in continuous-tone mode by truncating tails of the error histogram which may lead to improve CALIC compression performance. Also, we are going to propose a modification to CALIC in binary mode by eliminating error feedback mechanism. As when any pixel to be encoded has a different grey level than any of the neighboring pixels, CALIC triggers an escape sequence that switches the algorithm from binary mode to continuous-tone mode. Which means in this case the pixel will be treated as if it was in continuous-tone region. This minor modification should improve CALIC performance in binary images. Finally, we are going to discuss the GCT-I on medical images and compare results to the JPEG2000 standard.
Image And Text Compression
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Author : James A. Storer
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Image And Text Compression written by James A. Storer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
James A. Storer Computer Science Dept. Brandeis University Waltham, MA 02254 Data compression is the process of encoding a body of data to reduce stor age requirements. With Lossless compression, data can be decompressed to be identical to the original, whereas with lossy compression, decompressed data may be an acceptable approximation (according to some fidelity criterion) to the original. For example, with digitized video, it may only be necessary that the decompressed video look as good as the original to the human eye. The two primary functions of data compression are: Storage: The capacity of a storage device can be effectively increased with data compression software or hardware that compresses a body of data on its way to the storage device and decompress it when it is retrieved. Communications: The bandwidth of a digital communication link can be effectively increased by compressing data at the sending end and decom pressing data at the receiving end. Here it can be crucial that compression and decompression can be performed in real time.
Selected Papers On Image Coding And Compression
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Author : Majid Rabbani
language : en
Publisher: SPIE-International Society for Optical Engineering
Release Date : 1992
Selected Papers On Image Coding And Compression written by Majid Rabbani and has been published by SPIE-International Society for Optical Engineering this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Computers categories.
Image Data Compression Using A Codebook
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Author : Ching-Ping Wang
language : en
Publisher:
Release Date : 1985
Image Data Compression Using A Codebook written by Ching-Ping Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Image Processing Algorithms And Techniques
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Author :
language : en
Publisher:
Release Date : 1991
Image Processing Algorithms And Techniques written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Algorithms categories.