By Topic

Signal Processing Magazine, IEEE

Issue 4 • Date July 1997

Filter Results

Displaying Results 1 - 17 of 17
  • Signal Processing In Asia [From the Guest Editor]

    Publication Year: 1997 , Page(s): 18
    Save to Project icon | Request Permissions | PDF file iconPDF (125 KB)  
    Freely Available from IEEE
  • The Wheeler Legacy

    Publication Year: 1997 , Page(s): 102 - 105
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1248 KB)  

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 50th Anniversary Celebration Chair's Message [The Past, Present, and Future of Multimedia Signal Processing]

    Publication Year: 1997 , Page(s): 28
    Save to Project icon | Request Permissions | PDF file iconPDF (113 KB)  
    Freely Available from IEEE
  • Guest Editor's Message [The Past, Present, and Future of Multimedia Signal Processing]

    Publication Year: 1997 , Page(s): 29
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | PDF file iconPDF (128 KB)  
    Freely Available from IEEE
  • Signal processing and standardization

    Publication Year: 1997 , Page(s): 33 - 34
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (281 KB)  

    Because in many instances signal processing is geared to communication, the attitude of the signal processing community regarding standardisation has always been very positive, leading to successful exploitation of its findings in the marketplace. Such standards as A-law/μ-law PCM, Group 3 facsimile, the Compact Disc, G.721, H.261, JPEG, MPEG-1, and MPEG-2 are all fine examples of how the signal processing technology available at a certain point in time was exploited to make successful signal processing standards. The fact that different standards were defined by different is just proof of the strategic value of a standard to favour or limit communications. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Media integration for human communication

    Publication Year: 1997 , Page(s): 36 - 37
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (312 KB)  

    It is generally said that the 21st century will be the age of multimedia and networks. Multimedia signal processing (MMSP) technologies will play major roles in this multimedia-network age. Researchers today working in this area have the privilege of selecting the future direction of MMSP technologies, so what they are doing will deeply influence our future society. The article considers the biggest issues of MMSP technologies View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Audio-visual interaction in multimodal communication

    Publication Year: 1997 , Page(s): 37 - 38
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (244 KB)  

    Multimedia signal processing is more than simply “putting together” text, audio, images, and video. It is the integration and interaction among these different media that creates new systems and new research challenges and opportunities. In multimodal communication where speech is involved, audio-visual interaction is particularly significant View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Modeling and evaluation of multimodal perceptual quality

    Publication Year: 1997 , Page(s): 38 - 39
    Cited by:  Patents (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (236 KB)  

    The increasing performance requirements of multimedia modalities, carrying speech, audio, video, image, and graphics emphasize the need for assessment methods of the total quality of a multimedia system and methods for simultaneous analysis of the system components. It is important to take into account still more perceptual characteristics of the human auditory, visual, tactile systems, as well as combinations of these systems, it is also highly desirable to acquire methods for analysing the main perceptual parameters, which constitute the input for the total quality assessment. A framework is suggested for assessing the quality of modalities and their combinations View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Riding the new integrated media systems wave

    Publication Year: 1997 , Page(s): 32 - 33
    Cited by:  Papers (1)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (256 KB)  

    Integrated media systems will only achieve their potential they are truly integrated in three key ways: integration of content, integration with human users, and integration with other media systems. First, such systems must successfully combine digital video and audio, text, animation, graphics and knowledge about such information units and their interrelationships in real time. Second, they must integrate with the individual user via cooperatively interactive multidimensional dynamic interfaces. Third, integrated media systems must connect with other such systems and content-addressable multimedia databases, both logically and physically View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Neural networks for intelligent multimedia processing

    Publication Year: 1997 , Page(s): 44 - 45
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (248 KB)  

    Multimedia technologies represent new ground for research interactions among a variety of media such as speech, audio, image, video, text, and graphics. Future multimedia technologies will need to handle information a with an increasing level of intelligence, i.e., automatic recognition and interpretation of multimodal signals. The main attribute of neural processing is its adaptive learning capability, which enables machines to be taught to interpret possible variations of a same object or pattern, e.g. scale, orientation, and perspective. Moreover, we are able to accurately approximate unknown systems based on sparse sets of noisy data. In addition, spatial/temporal neural structures and hierarchical models are promising for multirate, multiresolution multimedia processing View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Voice dictation of Mandarin Chinese

    Publication Year: 1997 , Page(s): 63 - 101
    Cited by:  Papers (20)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (18588 KB)  

    The Chinese language is not alphabetic, and input of Chinese characters into computers remains a difficult problem even after decades of efforts made to overcome the problem. Voice dictation of Mandarin Chinese with a very large vocabulary is believed to be the perfect solution, but this is a highly challenging speech recognition problem with many technical issues yet unsolved. The characteristics of Mandarin Chinese, significantly different from those of most alphabetic western languages, lead to the fact that many special measures and unique approaches that consider the feature structure of the language are believed to be the key to providing better solutions to the problem. Such special measures and unique approaches are the primary focus of this article. We analyze the characteristic structure of Mandarin Chinese and discuss related issues. The primary focus is then on the key technology regarding the problem, including the basic architecture for Mandarin dictation, acoustic modeling/processing, and linguistic modeling/processing. Some typical prototype systems, other related applications, and initial industrial efforts and products are presented to indicate the feasibility of the key technology discussed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Signal processing for networked multimedia

    Publication Year: 1997 , Page(s): 39 - 41
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (360 KB)  

    Real-time transmission of multimedia data over packet networks poses several interesting problems for signal processing research. Although the range of these problems covers a large variety of topics, currently two groups appear to attract the most attention. The first group concerns adapting the signal compression techniques to address the special requirements imposed by the packet networks, including accommodating for packet losses, delays, and jitter; providing capability for multipoint; and coping with the heterogeneous nature of today's networks. The second group of problems is related to protecting the intellectual property rights associated with the transmitted multimedia data. The increasing availability of high-bandwidth networking makes it extremely easy to illegally duplicate and disseminate digital information. Unless a mechanism can be established to protect the rights of the content providers, commercial use of networked multimedia will remain extremely limited View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Speech, audio, and acoustic processing for multimedia

    Publication Year: 1997 , Page(s): 34 - 36
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (460 KB)  

    The primary advances in speech and audio signal processing that contributed to the maturing of multimedia applications are discussed in the areas of speech and audio signal compression, speech synthesis, acoustic processing and echo control, and network echo cancellation View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Implementation of media processors

    Publication Year: 1997 , Page(s): 48 - 51
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (476 KB)  

    Conventional standard processors do not correspond well to the characteristics of multimedia signal processor algorithms. Therefore, special architectural approaches are necessary for multimedia processors to deliver the required high processing power with efficient use of hardware resources. Programmable approaches offer a high degree of flexibility. In order to attain multimedia signal processor performance, architectural strategies for programmable processors are based on parallelization and adaptation principles. The future multimedia signal processor implementation hinges upon an optimal trade-off between the two design spaces, which can be effectively addressed by a codesign approach View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Obtaining higher resolution in Asia

    Publication Year: 1997 , Page(s): 52 - 62
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (5408 KB)  

    Important advances in digital signal processing for HDTV have occurred in Asia. This article outlines these advances, including trends in standard resolution television (STV) and progress in superhigh definition (SHD) imaging. Video coding, video recording, SHD image processing, and digital satellite broadcasting are covered, and trends in digital satellite TV and the challenges facing successful implementation of the technology are presented, as well as future research and development targets for HDTV View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Content-based indexing and retrieval of visual information

    Publication Year: 1997 , Page(s): 45 - 48
    Cited by:  Papers (6)  |  Patents (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (504 KB)  

    The ease of capturing and encoding digital images has produced a massive amount of visual information online. As a consequence, grand challenges have emerged in the areas of storage, indexing, and retrieval of visual information in large archives. How does one find a photograph from a large archive that contains millions of pictures? How does a CNN video journalist find a specific clip from the myriad of video tapes, ranging from historical to contemporary, from sports to humanities? Efficient, real-time algorithms and systems are needed to address these needs of not only professionals but for users who want to find visual information online View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Data hiding for multimedia personalization, interaction, and protection

    Publication Year: 1997 , Page(s): 41 - 44
    Cited by:  Papers (16)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (432 KB)  

    The advantages of digital media have opened up many new possibilities to hide data (information) within audio, image and video files. In order to provide copyright protection digital watermarking has been proposed as a means of identifying the owner or distributor of digital data. Data hiding and watermarking research builds on ideas and concepts developed in cryptography, communications theory, algorithm design, and signal processing. The data hiding problem is inherently more difficult than any of the problems that have traditionally been addressed in these fields. All data hiding algorithms combine and extend, in a sense, many of the solutions developed in these areas View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

IEEE Signal Processing Magazine publishes tutorial-style articles on signal processing research and applications, as well as columns and forums on issues of interest.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Min Wu
University of Maryland, College Park
United States 

http://www/ece.umd.edu/~minwu/