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Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference

Date 18-22 Oct. 1999

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  • APCC/OECC'99

    Publication Year: 1999 , Page(s): 0_2
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    Freely Available from IEEE
  • Looking into the multimedia services in GSM network

    Publication Year: 1999
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (60 KB)  

    With the booming of GSM subscription and Internet access, multimedia applications for mobile users have turned out to be most interesting and demanding industry globally. Based on a market study and the technology evolution, we try a draw a picture for multimedia services in mobile networks. View full abstract»

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  • DAVIC-compliant multimedia presentation through MHEG/DSM-CC

    Publication Year: 1999 , Page(s): 826 - 829 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (346 KB)  

    The development of computer and communication technologies has led to the emergence of multimedia-based systems that handle a variety of media (from text to audio-visual data) and their integration. This paper investigates the fundamentals of MHEG presentation, which often requires efficient and effective audio-visual data transmission based on the Digital Audio-Visual Council (DAVIC) specificatio... View full abstract»

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  • Several fundamental issues for a distributed hypermedia document system supporting mobile hosts

    Publication Year: 1999 , Page(s): 830 - 832 vol.2
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (267 KB)  

    Mobile computing is a new computing paradigm and a new research topic, which carries new challenges. This paper discusses several basic issues on a distributed hypermedia document system to support mobile users. View full abstract»

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  • An effective storage and management paradigm of multimedia documents

    Publication Year: 1999 , Page(s): 833 - 836 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (334 KB)  

    In this paper, taking advantage of the openness of multimedia documents, we propose a paradigm for their storage and management, which employs DBMS sensibly. The paradigm results in low management overhead and high access efficiency. Our discussion focuses on the model and its integration with the World Wide Web (WWW) framework. View full abstract»

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  • Remote interaction with heterogeneous databases based on TMN and BWD

    Publication Year: 1999 , Page(s): 837 - 840 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (274 KB)  

    With the rapid development of the current information networks, there are various databases, operating systems and network platforms coexisting in the networks. Therefore, it is important to find a remote interactive way to manipulate the various databases on a uniform operating platform. We demonstrated the feasibility of such a way in the three-tier client/server architecture (BWD) based on the ... View full abstract»

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  • Performance evaluation of scene change detection algorithms

    Publication Year: 1999 , Page(s): 841 - 844 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (359 KB)  

    Scene change detection algorithms become the key issues especially for video information in many digital video applications such as digital libraries and video servers. The accuracy and execution speed of the scene change detection algorithm is critical if large amounts of video data are to be processed. In this paper, we discuss the performance of the three previous proposed methods and present a... View full abstract»

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  • Fractal based texture analysis for retrieval of image data

    Publication Year: 1999 , Page(s): 845 - 848 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (406 KB)  

    In this paper, directional fractal dimensions are computed for a special class of images with lines and curves. Then the texture variation coefficient is defined and a simple algorithm for detecting singularity fields of an image is proposed. Experiments show that 92% singularity fields are correctly recognized by the proposed algorithm, and this will greatly help with content-based retrieval of t... View full abstract»

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  • Encoding 3D video by using APOM

    Publication Year: 1999 , Page(s): 849 - 852 vol.2
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (521 KB)  

    In this paper, we propose a new approach for encoding 3D video in virtual reality by using the active/passive optical mechanism (APOM). This mechanism which is based on a field-sequential standard for encoding the 3D-video format collaborates with only a single CCD camera. The core of this research is to substitute the double camera geometry with a single camera geometry collaborating with APOM. I... View full abstract»

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  • IP videoconferencing embracing the next era of visual collaboration

    Publication Year: 1999 , Page(s): 853 - 863 vol.2
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1118 KB)  

    The world of videoconferencing has begun expanding to H.323 (IP) because this standard enables mass deployment of lower cost, desktop videoconferencing systems. As desktop videoconferencing becomes more popular, users are demanding that IT organizations offer this capability across the company-wide network. The standard has since been updated for networked multimedia broadcasting. However, due to ... View full abstract»

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  • Virtual education environment for engineering courses

    Publication Year: 1999 , Page(s): 864 - 867 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (378 KB)  

    This paper discusses a proposed virtual education environment for engineering courses in our university. The virtual education environment can be realized by connecting various functional blocks by network. Each functional block is a combination of hardware and software that provides a specific function. View full abstract»

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  • Media synchronization solutions for Web-based distance learning

    Publication Year: 1999 , Page(s): 868 - 871 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (243 KB)  

    Media synchronization techniques for Web-based distance learning are introduced. As we know, the distance learning system is a typical multimedia application system. It involves many kinds of information media, for example, video, audio, graphics and text. The outstanding property of a distance learning system is that these media information are not independent, they have a temporal and spatial re... View full abstract»

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  • Implementation of education system under distributed databases over WWW for international use

    Publication Year: 1999 , Page(s): 872 - 875 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (380 KB)  

    An education system under distributed databases has been designed and implemented for international use that can supply teaching materials over the Wold Wide Web (WWW). According to the design, the system was implemented and examined. The system design and the functions are described. View full abstract»

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  • A solution to mix low bit-rate speech signal in decentralized multipoint conference

    Publication Year: 1999 , Page(s): 876 - 879 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (259 KB)  

    The mixing algorithm for low bit-rate audio streams plays an important part in a decentralized multipoint conference system. In this article, from the fundamental principle of linear prediction codecs, a new mixing scheme for low bit-rate audio streams based on a comparison between the energy of the exciting series of the input bit streams is deduced to overcome the main disadvantages of the tradi... View full abstract»

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  • Speech communication for working group based on LAN

    Publication Year: 1999 , Page(s): 880 - 883 vol.2
    Cited by:  Patents (4)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (209 KB)  

    We present a system which is used for working group speech communication based on a LAN (local area network). In our system we need a multimedia PC and a network adapter. People may use speech to communicate with each other in the working group. The system is based on client/server architecture. Packet exchange is used to pass speech signals through the LAN. In order to shorten the speech communic... View full abstract»

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  • Study on B-IP for provision of the multimedia video conference

    Publication Year: 1999 , Page(s): 884 - 887 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (311 KB)  

    The role of the resource has become more and more important for the provision of multimedia services. However, today it is still difficult to supply multimedia services in a public network. The difficulty lies in resource selection, charging and service profile submission etc. The problem can be solved by deploying broadband intelligent network technology. The broadband intelligent network system ... View full abstract»

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  • Research on PC-based multimedia communication terminals

    Publication Year: 1999 , Page(s): 888 - 891 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (289 KB)  

    This paper presents some improved algorithms of video and audio codecs for multimedia communication terminals based on an Intel Pentium PC under the Win9x OS. They are optimized using the characteristics of an Intel Pentium processor, and simplified depending on human perception. They have been used in ITU-T H.263 and G.723.1 to a completed H.323 using an Intel Pentium II 350 MHz processor as a ha... View full abstract»

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  • A new scheme of progressive image transmission based on bit-plane method

    Publication Year: 1999 , Page(s): 892 - 895 vol.2
    Cited by:  Papers (4)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (637 KB)  

    The bit-plane method (BPM) is the simplest way to implement the progressive image transmission (PIT) system. In this paper, we propose a simple and effective method to improve the image quality of the BPM in each phase. This method generates a tree-structured codebook to describe the contents of the pixels of the transmitted image. By transmitting this tree structured codebook to the receiver leve... View full abstract»

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  • Fast Internet wavelet image transmission

    Publication Year: 1999 , Page(s): 896 - 899 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (395 KB)  

    Images are usually transmitted across the Internet using a lossless protocol such as TCP/IP. Lossless protocols require retransmission of lost packets; which substantially increase transmission time. We introduce a fast lossy Internet image transmission scheme (FLIIT) for compressed images which eliminates retransmission delays by strategically shielding important portions of the image with redund... View full abstract»

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  • Wavelet image coding based on significance extraction using morphological operation

    Publication Year: 1999 , Page(s): 900 - 903 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (481 KB)  

    In this paper, an efficient embedded image compression algorithm is presented. It is based on the observation that the distribution of significant coefficients is intra-subband clustered and inter-subband self-similar. Morphological dilation is used to capture the clustered significant coefficients in each subband, resulting in the partitioning of each subband into significance clusters and insign... View full abstract»

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  • An efficient Huffman decoding method based on pattern partition and look-up table

    Publication Year: 1999 , Page(s): 904 - 907 vol.2
    Cited by:  Papers (5)  |  Patents (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (475 KB)  

    An efficient Huffman decoding method is presented in this paper. This new method first partitions a Huffman tree into subtrees by a set of regular bit-patterns. Then, some look-up tables are used to represent these subtrees. Using this method, a Huffman tree can be represented compactly and the decoding of codewords can be performed quickly by the matching of regular bit-patterns. View full abstract»

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  • Three goals in designing VLSI architectures for video compression

    Publication Year: 1999 , Page(s): 908 - 911 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (436 KB)  

    Video compression is characterized by the diversity in algorithms, the complexity of computation and the high throughput rate. The requirement of diversity and high performance in video compression brings forward some important goals in designing the VLSI architecture. In this paper, three very important goals are introduced into the design of VLSI architectures for video compression. In the main ... View full abstract»

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  • A quadtree classified-based fractal image coding approach

    Publication Year: 1999 , Page(s): 912 - 915 vol.2
    Cited by:  Patents (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (402 KB)  

    In this paper, an image coding approach is developed based on the quadtree classified method. It can solve the problem that some range blocks cannot be coded under the conventional fractal coding method. Experimental results show that compared to the conventional automatic fractal coding method, this approach can obtain high compression ratio with no apparent depression on the quality of the recon... View full abstract»

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  • Automatic face segmentation in YCrCb images

    Publication Year: 1999 , Page(s): 916 - 919 vol.2
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (274 KB)  

    This paper presents a novel technique to automatically detect the human face in videophone images with YCrCb format. By using the Cr-Cb histogram to eliminate the background, and applying region growing in the remaining areas, we can, with the aid of the proposed criteria, accurately detect the face from a complex background. View full abstract»

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  • Adaptive block-matching algorithm for video compression

    Publication Year: 1999 , Page(s): 920 - 923 vol.2
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (292 KB)  

    Block-matching motion estimation plays an important role in video coding. In this paper, we present an adaptive block-matching algorithm, which determines the candidate motion vectors and a dynamic search window based on the spatial and temporal neighbor blocks. According to the mean absolute error (MAE) based on these motion vectors, stop search, 3/spl times/3 neighbor window search and modified ... View full abstract»

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