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检索条件"任意字段=Digital Video Compression on Personal Computers: Algorithms and Technologies 1994"

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digital video compression on personal computers: algorithms and technologies

Digital Video Compression on Personal Computers: Algorithms ...

引用

digital video compression on personal computers: algorithms and technologies 1994

The proceedings contain 33 papers. The topics discussed include: JPEG image compression hardware implementation with extensions for fixed-rate and compressed-image editing applications;ASIC implementation of recursive scaled discrete cosine transform algorithm;video scene decomposition with the motion picture parser;method for extracting camera operations in order to describe subscenes in video sequences;hybrid DCT/quadtree motion-compensated coding of video sequences;applying mid-level vision techniques for video data compression and manipulation;software implementation of MPEG-II video encoding using socket programming in LAN;and statistical inverse discrete cosine transforms for image compression.

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HDCC - A SOFTWARE-BASED compression ALGORITHM FOR video CONFERENCING

HDCC - A SOFTWARE-BASED COMPRESSION ALGORITHM FOR VIDEO CONF...

引用

Conference on digital video compression on personal computers: algorithms and technologies

作者： MORETON, H SMITH, J SILICON GRAPH COMP SYST MT VIEWCA 94043

In this paper we describe a low cost approach to the compression of sequences of video images. The target application of this algorithm is video conferencing.

ISBN: (纸本)0819414824

In this paper we describe a low cost approach to the compression of sequences of video images. The target application of this algorithm is video conferencing.

关键词： video video compression RGB color model Detection and tracking algorithms Image compression Visualization Eye Image filtering Silicon Computer programming

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video ENCODING USING GLOBAL BLOCK MATCHING

VIDEO ENCODING USING GLOBAL BLOCK MATCHING

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Conference on digital video compression on personal computers: algorithms and technologies

作者： ARAKAKI, GK RECRUIT CO LTD CTR MEDIA DESIGNCHUO KUTOKYO 104JAPAN

Since motion compensation is computationally expensive the search for matching blocks is restricted to a small region. In this paper an algorithm for searching all blocks in all previous frames in practical time is de... 详细信息

ISBN: (纸本)0819414824

关键词： Computer programming video video coding Quantization Eye Head Error analysis RGB color model Sun video compression

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A SOFTWARE CODEC FOR personal computers BASED ON THE DISCRETE COSINE TRANSFORM

A SOFTWARE CODEC FOR PERSONAL COMPUTERS BASED ON THE DISCRET...

引用

Conference on digital video compression on personal computers: algorithms and technologies

作者： PITTS, C BEAUMONT, JM COZENS, S EMMS, NA MYERS, DJ BT LABS IPSWICH IP5 7REENGLAND

ISBN: (纸本)0819414824

This paper describes the development of a compatible encoder and decoder pair (codec) for motion video. A study has been undertaken of compression algorithms of low computational complexity, which may be candidates for running in real time on a personal computer (PC). From this study a DCT based algorithm was selected for further development and implementation on a PC. The code has been implemented in C, with critical routines optimised in assembly language. The encoder/decoder is intended to facilitate video communication applications between personal computers without the need for dedicated compression hardware. A 33MHz client PC connecting to a remote 66 MHz server PC via a 64 kbit/s dial-up digital link has been demonstrated. Live images grabbed by the server PC are compressed and transmitted to the client PC, requiring about 40 of the available 64 kbit/s. For 64 greyscale images of 144x120 pixels a frame rate of about 10 frames/s is achieved. © 1994 SPIE. All rights reserved.

关键词： personal computers

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AN OVERVIEW OF THE MPEG AUDIO compression ALGORITHM

AN OVERVIEW OF THE MPEG AUDIO COMPRESSION ALGORITHM

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Conference on digital video compression on personal computers: algorithms and technologies

作者： PAN, D DIGITAL EQUIPMENT CORP MAYNARDMA 01754

ISBN: (纸本)0819414824

This paper gives a summary of the MPEG/audio compression algorithm. This algorithm was developed by the Motion Picture Experts Group (MPEG), as an International Organization for Standardization (ISO) standard for the high fidelity compression of digital audio. The MPEG/audio compression standard is one part of a multiple part standard that addresses the compression of video (11172-2), the compression of audio (11172-3), and the synchronization of the audio, video, and related data streams (11172-1) to an aggregate bit rate of about 15 Mbits/sec. The MPEG/audio standard also can be used for audio-only applications to compress high fidelity audio data at much lower bit rates. While the MPEG/audio compression algorithm is lossy, often it can provide "transparent", perceptually lossless, compression even with compression factors of 6-to-l or more. The algorithm works by exploiting the perceptual weaknesses of the human ear. This paper also will cover the basics of psychoacoustic modeling and the methods used by the MPEG/audio algorithm to compress audio data with least perceptible degradation. © 1994 SPIE. All rights reserved.

关键词： Motion Picture Experts Group standards

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A HIGH-PERFORMANCE video CODEC FOR CD-ROM BASED video PLAYBACK

A HIGH-PERFORMANCE VIDEO CODEC FOR CD-ROM BASED VIDEO PLAYBA...

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Conference on digital video compression on personal computers: algorithms and technologies

作者： WANG, KS NORMILE, JO WU, HJ APPLE COMP INC ADV TECHNOL GRPCUPERTINOCA 95014

ISBN: (纸本)0819414824

This paper discusses video compression and decompression strategies for use on general puipose computer systems where no specialized hardware is available. We first examine the alternatives and describe the performance and limitations of the first generation of such methods. A brief description is given of the possible algorithmic approaches. We introduce requirements for the encoder/decoder, and show that a vector quantization based scheme with image preprocessing and classification can provide the required performance. The remainder of the paper deals with the algorithm design and the tradeoffs made to meet the goals of realtime decode capability, compression ratio and image quality. Finally, we present results for the optimized algorithm and indicate areas which appear to be most promising for further work. © 1994 SPIE. All rights reserved.

关键词： CD-ROM

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MPEG-2 SYSTEMS

MPEG-2 SYSTEMS

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Conference on digital video compression on personal computers: algorithms and technologies

作者： MACINNIS, AG KALEIDA LABS INC MT VIEWCA 94043

ISBN: (纸本)0819414824

MPEG is a standard which defines data formats for coded (compressed) audio, video, and their combination. The Systems part of this work, which is Part 1, defines the coding and related requirements for providing the combination of audio and video, including key system- level functions. These functions include synchronization of audio and video, multiplexing, clock recovery, guaranteed buffer behavior, program time identification, and many other system-level functions which are required in practice and which are not part of the compression coding of audio and video. MPEG-2 formally known as ISO 13818, and MPEG-2 Systems is ISO 13818-1. Currently MPEG-2 has the status of a Committee Draft, meaning that it has been published for review by participating national bodies, as part of the procedure for becoming an official International Standard.

关键词： video Systems modeling video compression Photoemission spectroscopy Clocks Asynchronous transfer mode Data modeling Standards development video coding Multiplexing

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STATUS OF ITU AND ISO/MPEG4 video CODING STANDARDS AT VERY-LOW BIT RATES

STATUS OF ITU AND ISO/MPEG4 VIDEO CODING STANDARDS AT VERY-L...

引用

Conference on digital video compression on personal computers: algorithms and technologies

作者： SCHAPHORST, R READER, C DELTA INFORMAT SYST HORSHAMPA

ISBN: (纸本)0819414824

The goal of the ISO project, designated MPEG4, is to develop a generic video coding syntax suitable for a wide range of applications such as videophone via the PSTN and mobile radio, security systems, mobile experts, emergency monitoring, educational networks, and networked games. It is anticipated that the coding algorithm will be a significant advancement relative to the basic interframe predictive 8 X 8 DCT design which is used in most digital TV standards today. Examples of advanced coding techniques being considered include fractals, analysis/synthesis, knowledge-based, and semantic coding.

关键词： Standards development video coding video Semantic video Detection and tracking algorithms Fractal analysis Information security Network security Visualization Wireless communications

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REAL-TIME MPEG video CODEC ON A SINGLE-CHIP MULTIPROCESSOR

REAL-TIME MPEG VIDEO CODEC ON A SINGLE-CHIP MULTIPROCESSOR

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Conference on digital video compression on personal computers: algorithms and technologies

作者： LEE, W GOLSTON, J GOVE, RJ KIM, YM UNIV WASHINGTON DEPT ELECT ENGNIMAGE COMP SYST LABSEATTLEWA 98195

ISBN: (纸本)0819414824

We present a software implementation of a real-time MPEG video codec on the MediaStation 5000 multimedia system. Unlike other compression systems whose sole function is the encoding or decoding of video data, the MediaStation 5000 is capable of performing various real-time operations involving a wide range of multimedia data, including image, graphics, video, and even audio. This programmability is provided by Texas Instruments TMS320C80, better known as Multimedia video Processor (MVP), which is a single-chip multiprocessing device with highly parallel internal architecture. The MVP integrates a RISC processor, four DSP-like processors, an intelligent DMA controller, video controllers, and a large amount of SRAMs onto a single chip. Since the MVP contains such a high degree of parallel features, developing the MPEG software and mapping it to the MVP requires a thorough study of the algorithms and a good understanding of the processor architecture. By exploiting the advanced features of the MVP, the MediaStation 5000 can achieve the MPEG compression and decompression of video sequences in real time.

关键词： digital signal processing video video compression Computer programming video processing Multimedia video coding Image compression Computer architecture Computing systems

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video compression BY COEFFICIENT COMPENSATION

VIDEO COMPRESSION BY COEFFICIENT COMPENSATION

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Conference on digital video compression on personal computers: algorithms and technologies

作者： YAMAGUCHI, H TEXAS INSTRUMENTS INC TSUKUBA RES & DEV CTRTSUKUBAIBARAKI 305JAPAN

ISBN: (纸本)0819414824

This paper discusses a new video compression algorithm called Coefficient Compensation that achieves high performance by optimizing the DCT encoding loop structure, and demonstrates its improvement characteristic as compared with the conventional JPEG or MPEG I/P picture encoding under the condition that movement compensation is not available. The first part of the paper analyzes the performance of the DCT encoding loop structure, the method of optimization and the concept of soft-decision. The second part reports on the simulation results. Encoding performance is tested by various MPEG test sequences compressed in 20 Mbits/sec. The difference between JPEG and MPEG I is in the quantization table. For JPEG, the quantization table widely accepted as one producing a good compression quality is used. All the encoded binary outputs are fully compatible to the MPEG2 syntax but additional 2 bits/block information is coded as the user data for the Coefficient Compensation.

关键词： Computer programming video compression video Quantization Binary data Motion estimation Silicon video coding Algorithm development video processing

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