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MultiMedia, IEEE

Issue 1 • Date Jan.-Mar. 2014

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Page(s): c1
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  • Table of contents

    Page(s): c2 - 1
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  • How Many Visual Concepts?

    Page(s): 2 - 3
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  • Content is Dead ... Long Live Content: The New Age of Multimedia-Hard Problems

    Page(s): 4 - 8
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    Using the ACM Multimedia 2012 panel on metadata as a jumping-off point, the authors investigate whether content can continue to play a dominant role in multimedia research in the age of social, local, and mobile media. In this article, they propose that the community now must face the challenge of characterizing the level of difficulty of multimedia problems to establish a better understanding of where content analysis needs further improvement. They also suggest a classification method that defines problem complexity in the context of human-assisted computation. View full abstract»

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  • Call for papers

    Page(s): 9
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  • Multimedia Data Management in Mobile Computing

    Page(s): 10 - 13
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  • Memory-Efficient Image Databases for Mobile Visual Search

    Page(s): 14 - 23
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    Mobile visual search systems compare images against a database for object recognition. If query data is transmitted over a slow network or processed on a congested server, the latency increases substantially. This article shows how on-device database matching guarantees fast recognition regardless of external conditions. The database signatures must be compact because of limited memory, capable of fast comparisons, and discriminative for robust recognition. The authors first describe methods that compress visual word histograms, which require a codebook and decoding compressed signatures. They then describe methods that use residuals to achieve the same accuracy with much smaller codebooks and compressed domain matching. View full abstract»

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  • Mobile Photo Recommendation and Logbook Generation Using Context-Tagged Images

    Page(s): 24 - 34
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    Context-aware and semantic-based technologies have been successfully employed to improve multimedia management in mobile environments. Large sets of context-tagged images on the Web are a concrete example of this achievement. The authors present two mobile systems, MMedia2U and CAPTAIN, that take the concept of context-aware multimedia management beyond photo organization and annotation. CAPTAIN is a tool that helps generate logbooks using context-tagged images and tracking data. Crewmembers used this tool to manage multimedia content and publish it to a blog during a sea expedition. MMedia2U is a mobile photo recommender system that exploits the user's context and context-tagged images to improve photo recommendation. View full abstract»

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  • Membership Matters [Advertisement]

    Page(s): 35
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  • A Multimedia Semantic Retrieval Mobile System Based on HCFGs

    Page(s): 36 - 46
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    A multimedia semantic retrieval system based on hidden coherent feature groups (HCFGs) can support multimedia semantic retrieval on mobile applications. The system can capture the correlation between features and partition the original feature set into HCFGs, which have strong intragroup correlation while maintaining low intercorrelation. The authors present a novel, multimodel fusion scheme to effectively fuse the multimodel results and generate the final ranked retrieval results. In addition, to incorporate user interaction for effective retrieval, the proposed system also features a user feedback mechanism that helps refine the retrieval results. View full abstract»

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  • Take the CS Library wherever you go! [Advertisement]

    Page(s): 47
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  • A New Paradigm for Querying Blobs in Vehicular Networks

    Page(s): 48 - 58
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    In this article, the authors study querying binary large objects (blobs) such as video and voice clips in a network of vehicles communicating wirelessly. They introduce a novel paradigm, describe a set of derived query-processing strategies and compare them along three dimensions: push versus pull, whether or not a communication infrastructure is utilized, and whether metadata dissemination is separated from blob dissemination. They analyze these strategies theoretically and experimentally in terms of answer throughput and communication overhead. View full abstract»

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  • IEEE Computer Society [Advertisement]

    Page(s): 59
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  • Self-Recognized Image Protection Technique that Resists Large-Scale Cropping

    Page(s): 60 - 73
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    Brought up by the crucial issue of copyright, digital watermarking plays a key role in protecting integrity and providing authorization for multimedia. Efficient watermarking techniques require visual imperceptibility and robustness against various attacks. In this new approach, the authors propose a feature-based watermarking algorithm to embed a binary image as a watermark in the DCT domain to guarantee visual efficiency. In particular, the technique embeds marker bits to locate the original block of a cropped image and thereby resist synchronous damage to images. As simulation results show, compared to related methods, the proposed approach better resists several major image attacks, including cropping, shifting, blurring, noise, sharpening, and JPEG lossy compression. Moreover, this watermarking method can achieve blind extraction, in which the original image isn't required for watermark extraction and the embedded image can be restored with high visual efficiency. View full abstract»

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  • Visions for Augmented Cultural Heritage Experience

    Page(s): 74 - 82
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    Museum visitor experiences differ from person to person, from cognitive to affective experiences. Progress in information technology has provided us with the opportunity to improve both the quantity and personalization of cultural information, privileging the cognitive experience against the affective. Computer vision promises to be an extraordinary enabling technology for augmenting visitor experiences, bridging the affective gap by understanding the visitor's individual cognitive needs and interests and his or her situational affective state. View full abstract»

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  • Stay Connected [Advertisement]

    Page(s): 83
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  • Finding the Needle in the Image Stack: Performance Metrics for Big Data Image Analysis

    Page(s): 84 - 89
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    Explosive growth of images and video captured and recorded on computing devices has occurred in the last decade. With the emergence and widespread adoption of broadband Internet in the late 1990s and continuing to mobile and cellular phones, video and images are ubiquitous in all aspects of modern society. The challenge is how this visual data can be used and analyzed on a large scale and how the results of this analysis can be applied to society and its citizens. View full abstract»

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  • The Multimedia Grand Challenge 2013

    Page(s): 90 - 94
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    The Multimedia Grand Challenge was held at ACM Multimedia 2013 in Barcelona, Spain. At this fifth annual event, researchers from academia attacked multimedia challenges inspired by industry. This report provides an overview of the 2013 Multimedia Grand Challenge, describing the six challenges and the selection procedure for finalists and eventual winners as well as summarizing the winning solutions, which should definitely be regarded as showcases for the multimedia research community. View full abstract»

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  • New Products

    Page(s): 96
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  • Call for papers

    Page(s): c3
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  • IEEE Cloud Computing [Advertisement]

    Page(s): c4
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Aims & Scope

The magazine contains technical information covering a broad range of issues in multimedia systems and applications

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
John R. Smith
IBM T.J. Watson Research Center