检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

35 篇 会议
1 篇 期刊文献

馆藏范围

36 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

34 篇 工学
- 34 篇 软件工程
- 31 篇 电气工程
- 3 篇 信息与通信工程
- 3 篇 计算机科学与技术...
- 1 篇 光学工程
- 1 篇 控制科学与工程
- 1 篇 网络空间安全
33 篇 理学
- 32 篇 物理学
- 1 篇 数学
- 1 篇 统计学（可授理学、...
1 篇 医学
- 1 篇 临床医学
1 篇 管理学
- 1 篇 图书情报与档案管...

主题

22 篇 video
17 篇 video compressio...
13 篇 image compressio...
12 篇 computer program...
11 篇 video coding
9 篇 quantization
8 篇 motion estimatio...
6 篇 visualization
6 篇 computing system...
5 篇 standards develo...
5 篇 image processing
5 篇 image quality
4 篇 eye
4 篇 signal to noise ...
4 篇 video processing
4 篇 motion models
3 篇 head
3 篇 image segmentati...
3 篇 algorithm develo...
3 篇 data storage

机构

2 篇 univ texas dept ...
2 篇 kaleida labs inc...
1 篇 3294 desertwood ...
1 篇 stanford univ in...
1 篇 ricoh calif res ...
1 篇 digital equipmen...
1 篇 telefon i&d e-28...
1 篇 univ ottawa dept...
1 篇 columbia univ de...
1 篇 image coding dep...
1 篇 recruit co ltd c...
1 篇 bt labs ipswich ...
1 篇 mit mit media la...
1 篇 apple comp inc c...
1 篇 university of ca...
1 篇 univ washington ...
1 篇 department of co...
1 篇 stellacom inc ad...
1 篇 ibm corporation ...
1 篇 delta informat s...

作者

2 篇 wang ks
2 篇 bovik ac
1 篇 anastassiou d
1 篇 arakaki gk
1 篇 wu h
1 篇 rodriguez aa
1 篇 moreton h
1 篇 smith j
1 篇 gandhi r
1 篇 eude gérard
1 篇 wang fm
1 篇 macinnis ag
1 篇 ponceleon db
1 篇 sudharsanan s
1 篇 wu hj
1 篇 beaumont jm
1 篇 oosa k
1 篇 pan d
1 篇 roser m
1 篇 dequeiroz rl

语言

36 篇 英文

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

共 36 条记录，以下是11-20 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

JPEG IMAGE compression HARDWARE IMPLEMENTATION WITH EXTENSIONS FOR FIXED-RATE AND COMPRESSED IMAGE EDITING APPLICATIONS

JPEG IMAGE COMPRESSION HARDWARE IMPLEMENTATION WITH EXTENSIO...

引用

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

作者： BOLIEK, M ALLEN, JD RYU, T SATO, Y HARA, J RICOH CALIF RES CTRMENLO PKCA

ISBN: (纸本)0819414824

This paper describes a new high speed image compression hardware implementation which, in addition to implementing the JPEG baseline system, can be used in fixed-rate compression systems and in systems that allow editing of compressed images. High speed (CCIR 601 resolution at 30 frames/second) and small silicon size are achieved by using a unique parameterized orthogonal transform. This implementation is compatible with the DCT, yet requires no additional multiplications. Also described here is a system that uses a dynamic quantization scalar circuit to achieve fixed-rate compression and a system that utilizes the `static coefficient DPCM' feature to compress and decompress regions of interest within an image for editing or viewing.

关键词： Image compression Quantization video Control systems video compression Image filtering Silicon Computing systems Image resolution video acceleration

来源：评论

学校读者我要写书评

暂无评论

A FAST MOTION ESTIMATION ALGORITHM FOR AN MPEG video CODER

A FAST MOTION ESTIMATION ALGORITHM FOR AN MPEG VIDEO CODER

引用

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

作者： CHAN, E GANDHI, R PANCHANATHAN, S UNIV OTTAWA DEPT ELECT ENGNMULTIMEDIA COMMUN RES LABOTTAWA K1N 6N5ONTARIOCANADA

ISBN: (纸本)0819414824

video compression is becoming increasingly important with the advent of the compression standards and broadband networks. Typical applications include high-definition television, multimedia communications, etc. There are two kinds of redundancies that exist in a video sequence, namely, temporal and spatial which are exploited to achieve compression. The spatial redundancies are removed by using techniques such as discrete cosine transform, vector quantization, etc. while the temporal redundancies are removed by the motion estimation/compensation techniques. Recently, several block based motion estimation algorithms have been reported in the literature. However, these algorithms are either computationally expensive or converge to a local optimum. In this paper, we propose a reduced complexity block-matching motion estimation algorithm for an MPEG video coder. This algorithm consists of a layered structure and hence does not converge to a local optimum. Most importantly, it employs a simple matching criterion, namely, the modified pixel difference classification (MPDC) and hence results in a reduced computational complexity. The MPEG video coder has been simulated using the proposed layered structure MPDC algorithm (LSA-MPDC). Simulation results indicate that the LSA-MPDC algorithm achieves a good performance for both slow and fast moving sequences. In addition, the hardware implementation of the LSA-MPDC algorithm is very simple because of the binary operations used in the matching criteria. © 1994 SPIE. All rights reserved.

关键词： digital television

来源：评论

学校读者我要写书评

暂无评论

STATISTICAL INVERSE DISCRETE COSINE TRANSFORMS FOR IMAGE compression

STATISTICAL INVERSE DISCRETE COSINE TRANSFORMS FOR IMAGE COM...

引用

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

作者： HUNG, AC MENG, THY STANFORD UNIV INFORMAT SYST LABSTANFORDCA 94305

ISBN: (纸本)0819414824

The Discrete Cosine Transform (DCT) has been applied to image and image sequence compression to decorrelate the picture data before quantization. This decorrelation results in many of the quantized transform coefficients equaling zero, hence the compression gain. For the decoder, the very few, sparsely populated, non-zero transform coefficient can be utilized for great speed-up in the inverse DCT. This paper describes and compares two styles of implementations of fast inverse DCTs for sparse data. The first implementation that we call the symmetric mapped inverse DCT is based on the forward mapped inverse DCT, but our implementation is up to three times faster. The second implementation is based on a scaled inverse DCT, with detection of zero values. Both implementations are tested for speed against other algorithms, under varying degrees of DCT coefficient sparseness.

关键词： Transform theory Quantization Image compression Matrices Algorithm development Computer simulations Image processing Image transmission Switches video

来源：评论

学校读者我要写书评

暂无评论

APPLYING MIDLEVEL VISION TECHNIQUES FOR video DATA-compression AND MANIPULATION

APPLYING MIDLEVEL VISION TECHNIQUES FOR VIDEO DATA-COMPRESSI...

引用

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

作者： WANG, JYA ADELSON, EH DESAI, U MIT MIT MEDIA LABDEPT ELECT ENGN & COMP SCICAMBRIDGEMA 02139

ISBN: (纸本)0819414824

Most image coding systems rely on signal processing concepts such as transforms, VQ, and motion compensation. In order to achieve significantly lower bit rates, it will be necessary to devise encoding schemes that involve mid-level and high-level computer vision. Model-based systems have been described, but these are usually restricted to some special class of images such as head-and-shoulders sequences. We propose to use mid-level vision concepts to achieve a decomposition that can be applied to a wider domain of image material. In particular, we describe a coding scheme based on a set of overlapping layers. The layers, which are ordered in depth and move over one another, are composited in a manner similar to traditional `cel' animation. The decomposition (the vision problem) is challenging, but we have attained promising results on simple sequences. Once the decomposition has been achieved, the synthesis is straightforward.

关键词： Motion models Image segmentation video Computer programming Affine motion model video compression Image compression Motion estimation Data compression video coding

来源：评论

学校读者我要写书评

暂无评论

A COMPUTATIONALLY FAST WAVELET-BASED video CODING SCHEME

A COMPUTATIONALLY FAST WAVELET-BASED VIDEO CODING SCHEME

引用

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

作者： SENGUPTA, A HILTON, M JAWERTH, B UNIV S CAROLINA DEPT COMP SCICOLUMBIASC 29208

ISBN: (纸本)0819414824

Wavelet transforms have recently been used with great success in software-only still image coding applications;their use in software-only video coding, however, has been impeded by the high computational cost of performing the wavelet transform. For example, performing a full inverse wavelet transform on a 251 by 256 pixel, 8-bits per pixel greyscale image takes about 0.25 seconds on a 66Mhz 80486 PC. We present a new technique for rapidly evaluating the inverse wavelet transform in video compression applications. The wavelet transform decomposes each pixel in an image into a linear combination of basis functions. Typically, very few pixels in a video sequence change from one image to the next;therefore, very few of the coefficients in the transformed video sequence change from one image to the next. We capitalize on this fact, and speed up the reconstruction of transformed image sequences by computing the inverse transform for only those coefficients that have changed since the previous image. Our prototype software-only video decompressor based on this idea is capable of reconstructing 256 by 256, 8-bits per pixel, greyscale images at a rate of 18 frames per second at a compression ratio of about 22:1. © 1994 SPIE. All rights reserved.

关键词： Pixels

来源：评论

学校读者我要写书评

暂无评论

FEASIBILITY OF video CODEC algorithms FOR SOFTWARE-ONLY PLAYBACK

FEASIBILITY OF VIDEO CODEC ALGORITHMS FOR SOFTWARE-ONLY PLAY...

引用

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

作者： RODRIGUEZ, AA MORSE, K KALEIDA LABS INC MT VIEWCA 94043

ISBN: (纸本)0819414824

Software-only video codecs can provide good playback performance in desktop computers with a 486 or 68040 CPU running at 33 MHz without special hardware assistance. Typically, playback of compressed video can be categorized into three tasks: the actual decoding of the video stream, color conversion, and the transfer of decoded video data from system RAM to video RAM. By current standards, good playback performance is the decoding and display of video streams of 320 by 240 (or larger) compressed frames at 15 (or greater) frames-per- second. Software-only video codecs have evolved by modifying and tailoring existing compression methodologies to suit video playback in desktop computers. In this paper we examine the characteristics used to evaluate software-only video codec algorithms, namely: image fidelity (i.e., image quality), bandwidth (i.e., compression) ease-of-decoding (i.e., playback performance), memory consumption, compression to decompression asymmetry, scalability, and delay. We discuss the tradeoffs among these variables and the compromises that can be made to achieve low numerical complexity for software-only playback. Frame- differencing approaches are described since software-only video codecs typically employ them to enhance playback performance. To complement other papers that appear in this session of the Proceedings, we review methods derived from binary pattern image coding since these methods are amenable for software-only playback. In particular, we introduce a novel approach called pixel distribution image coding.

关键词： video video compression Computing systems Image compression Image quality Quantization Computer programming Data conversion video coding Binary data

来源：评论

学校读者我要写书评

暂无评论

HYBRID DCT QUADTREE MOTION-COMPENSATED CODING OF video SEQUENCES

HYBRID DCT QUADTREE MOTION-COMPENSATED CODING OF VIDEO SEQUE...

引用

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

作者： LIU, S WANG, FM HEWLETT PACKARD CORP PALO ALTOCA 94304

ISBN: (纸本)0819414824

This paper proposes a hybrid DCT/Quadtree coding technique to compress motion compensated difference images for video conferencing applications. The hybrid scheme is developed primarily to eliminate the visually annoying `corona' effect caused by the traditional DCT coding of subimage blocks containing edge components. In this coding framework, the quadtree segmentation scheme is selected to compress edge blocks because of its ability to describe geometrical structures accurately. For quadtree coded blocks, each segmented subregion is represented by its associated sample mean, which is quantized and transmitted along with the segmentation pattern information to the receiver for reconstruction. The remaining subimage blocks are coded using the DCT. Simulation results demonstrate that this hybrid coding system provides a subjectively superior video quality than traditional DCT coding systems: the corona effect is virtually eliminated and the visible difference is most noticeable at low bit rates.

关键词： Quantization video coding Image segmentation video Computer programming Image compression Motion estimation video compression Distortion Receivers

来源：评论

学校读者我要写书评

暂无评论

video CODING WITH WAVELET TRANSFORM ON THE VERY-LOW BIT-RATE COMMUNICATION CHANNEL

VIDEO CODING WITH WAVELET TRANSFORM ON THE VERY-LOW BIT-RATE...

引用

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

作者： KIM, SW LEE, HK KOREA ADV INST SCI & TECHNOL DEPT COMP SCITAEJON 305701SOUTH KOREA

ISBN: (纸本)0819414824

In this paper, we present a moving image coding system which uses wavelet transform for the videophone on a very low bit rate communication channel (10 K bps PSTN). There are two requirements for our coding system: the good subjective quality for low bit rate coding and the suitability for progressive transmission. To satisfy the requirements, we use multifrequency motion estimation which estimates motion for each frequency bands. After the motion estimation, we can assign less bits to the motion estimation error in the high frequency bands because the human is insensitive to the change in high frequency components in the case of moving image. The experimental results confirm that our approach out-performs discrete cosine transform coding schemes in terms of the subjective quality because there are no blocking effects, and moreover, the wavelet transform in the approach supports the progressive transmission in itself.

关键词： Motion estimation Wavelet transforms Wavelets Image compression video coding video Image processing Image quality video compression Telecommunications

来源：评论

学校读者我要写书评

暂无评论

TRANSFORM CODING FOR LOW BIT-RATE APPLICATIONS

TRANSFORM CODING FOR LOW BIT-RATE APPLICATIONS

引用

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

作者： PONCELEON, DB WANG, KS WU, H NORMILE, J APPLE COMP INC CUPERTINOCA 95014

ISBN: (纸本)0819414824

Low bit rate image coding at 10 kbit/s and less is a difficult problem and does not appear possible with the current generation of block transform based methods. Current research efforts center around the use of transforms with less objectionable artifacts such as wavelets or model based methods. We examine a method that is transform based but captures specific features of the image to be represented. The transform uses principal component analysis to generate a basis set specific to the particular class of images to be coded. We present results from a transform designed for use in a `talking head' sequence. Significant improvement in reconstructed quality is shown when perceptual weighting is used in generating the basis set. The appendix includes details of computationally efficient methods for deriving the basis set as well as a description of the weighting method.

关键词： Signal to noise ratio Mouth Head video Eye Image compression Detection and tracking algorithms Facial recognition systems Image quality Principal component analysis

来源：评论

学校读者我要写书评

暂无评论

OPTIMIZED HYBRID TRANSFORM CODING FOR VERY-LOW BITRATE - videoTELEPHONY COMMUNICATION ON personal-COMPUTER

OPTIMIZED HYBRID TRANSFORM CODING FOR VERY-LOW BITRATE - VID...

引用

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

作者： EUDE, G SCHMITT, JC FRANCE TELECOM CTR NATL ETUDES TELECOMMUNF-92131 ISSY MOULINEAUXFRANCE

ISBN: (纸本)0819414824

This paper describes a "very low bitrate visual telephony application" demonstrator which was designed to be used on the Public Switched Telephony Network (PSTN) for many multimedia purposes. This development was done by CNET in coordination with the european COST211^ter project with the aim to demonstrate videotelephony at very low bit rates. The main concern was to optimize a video coding algorithm based on the CCITT H.261 existing standard and directly derived from the COST21 l^ter simulation model. The different signals which are needed for a videotelephony communication, video, speech, data and control are modulated and transmitted at a bitrate contained between 9.6 kbit/s and 28.8 kbit/s. The description of the demonstrator is given, including video algorithm and system multiplex specifications. The reasons of the choice of the video format and algorithm are also discussed. A friendly software application has been developed to run videotelephony within a Macintosh computer environment. This program uses the QuickTime routines to record and to play the videophone pictures to or from the hard disk. Single pictures or large sequences can be grabbed to the hard disk. Data can also be transmitted by opening, through the audio/video multiplex a data channel of some kbit/s in the video channel, allowing minimal groupware application. © 1994 SPIE. All rights reserved.

关键词： personal computers

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共4页 << < 1 2 3 4 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：