Multimedia abstractions for a digital video library

Christel, Michael G.; Winkler, David B.; Taylor, Colin

doi:10.1145/263690.263776

Cited by 29 publications

(15 citation statements)

References 14 publications

(8 reference statements)

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“…Poster frame, filmstrip, storyboard, fast-forward, slide-show, and video skim (Christel, Winkler, & Taylor, 1997) are some examples of visual surrogate types that are used in current digital video libraries such as Imformedia and Open-Video to facilitate video retrieval, browsing (Li, Gupta, Sanocki, He, & Rui, 2000), and understanding. Indeed, we include three types of visual surrogates in the video learning objects: poster frame, key frames (as storyboard) and fast-forwards.…”

Section: Visual Surrogatesmentioning

confidence: 99%

Decoupling the Information Application from the Information Creation: Video as Learning Objects in Three-Tier Architecture

2005

IJELL

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In this paper a new three-tier video application infrastructure is proposed. Video learning object is introduced as the intermedia tier and it connects the video metadata and video application tier. In addition to the traditional text metadata such as title and description, a wide range of visual metadata including key frames, video storyboards, and fast-forward video are integrated into the video learning object. The visual metadata is organized in hierarchical structure. Video timestamps are used to "mark" different video channels (i.e., visual channel, audio channel, text channel) for the purpose of synchronization. A MPEG-7 compatible XML metadata schema was developed to encode the video learning objects to achieve the reusability and interoperability-different video applications can use the same video learning object without having to reinvent the wheel. A semi-automatic video metadata authorization system called Video Annotation and Summary Tool (VAST) was developed to facilitate the creation of video metadata. The automatic process generates a series of key frame "candidates" (primitive frames) but human beings have to manually select the key frames. The number and the image size of the primitive frames are reconfigureable. The fast-forward version of the original video can also be created from the primitive frames. Finally, we demonstrate how the new three-tier infrastructure is used to guide the development of two independent video application projects: the Open-video digital library project and distance learning using the Interactive Shared Educational Environment (ISEE) project. Both projects utilize the same set of video learning objects.

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Section: Visual Surrogatesmentioning

confidence: 99%

Decoupling the Information Application from the Information Creation: Video as Learning Objects in Three-Tier Architecture

2005

IJELL

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“…For now, Físchlár has also become a testbed for various keyframe browsing user interfaces, although we plan to work on other video browsing methods such as skim [8] and others in near future. In keyframe-based browsing, once a basic set of keyframes are extracted from a video programme and stored in the system as metadata for that programme, it becomes simply a matter of how to present those keyframes onto the user's screen.…”

Section: The Físchlár Systemmentioning

confidence: 99%

“…At one end of the layeredness of keyframe-based presentation there will be a single keyframe that represents the whole video clip, as is frequently done for displaying search results for a video clip in experimental systems such as [13] [14] [8]. One cannot expect this single keyframe to be able to convey the content of the whole video, but still it works as a kind of icon for the video and locates clips within the whole video.…”

Section: Layerednessmentioning

confidence: 99%

“…Because the material is in digital format, this will allow easy searching and browsing of video content information such as movies, TV broadcasts and personal archives. In the domain of non-temporal media, quite a few innovative and creative interface development efforts for browsing can be found including interfaces such as text browsing/visualisation [2] [3] and the interfaces developed for browsing different types of data spaces [4] [5], but only very limited efforts and studies have been made on browsing interfaces to time-based media such as video, examples being [6], [7], [8] and [9].…”

Section: Introductionmentioning

confidence: 99%

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Implementation and Analysis of Several Keyframe-Based Browsing Interfaces to Digital Video

Lee

Smeaton

Berrut

et al. 2000

Research and Advanced Technology for Digital Libraries

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Abstract. In this paper we present a variety of browsing interfaces for digital video information. The six interfaces are implemented on top of Físchlár, an operational recording, indexing, browsing and playback system for broadcast TV programmes. In developing the six browsing interfaces, we have been informed by the various dimensions which can be used to distinguish one interface from another. For this we include layeredness (the number of "layers" of abstraction which can be used in browsing a programme), the provision or omission of temporal information (varying from full timestamp information to nothing at all on time) and visualisation of spatial vs. temporal aspects of the video. After introducing and defining these dimensions we then locate some common browsing interfaces from the literature in this 3-dimensional "space" and then we locate our own six interfaces in this same space. We then present an outline of the interfaces and include some user feedback.

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“…They should therefore be able interrupt the playing of one fragment quickly when they decide that it is not of interest. We may be able to draw on results of interfaces to other time-based media such as video [4] and apply them to MIDI music.…”

Section: Presentation Of Music Datamentioning

confidence: 99%

Towards a digital library of popular music

Bainbridge

Nevill-Manning

Witten

et al. 1999

Proceedings of the Fourth ACM Conference on Digital Libraries

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Digital libraries of music have the potential to capture popular imagination in ways that more scholarly libraries cannot. We are working towards a comprehensive digital library of musical material, including popular music. We have developed new ways of collecting musical material, accessing it through searching and browsing, and presenting the results to the user. We work with different representations of music: facsimile images of scores, the internal representation of a music editing program, page images typeset by a music editor, MIDI files, audio files representing sung user input, and textual metadata such as title, composer and arranger, and lyrics. This paper describes a comprehensive suite of tools that we have built for this project. These tools gather musical material, convert between many of these representations, allow searching based on combined musical and textual criteria, and help present the results of searching and browsing. Although we do not yet have a single fully-blown digital music library, we have built several exploratory prototype collections of music, some of them very large (100,000 tunes), and critical components of the system have been evaluated.

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Multimedia abstractions for a digital video library

Cited by 29 publications

References 14 publications

Decoupling the Information Application from the Information Creation: Video as Learning Objects in Three-Tier Architecture

Decoupling the Information Application from the Information Creation: Video as Learning Objects in Three-Tier Architecture

Implementation and Analysis of Several Keyframe-Based Browsing Interfaces to Digital Video

Towards a digital library of popular music

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