MPEG-7: the generic multimedia content description standard, part 1

Martinez, José M.; Koenen, Rob; Pereira, Fernando

doi:10.1109/93.998074

Cited by 200 publications

(83 citation statements)

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“…1 As shape is an important property for similarity evaluation in the case of images, region-based and contour-based descriptors are proposed by MPEG-7. 2 As the biomedical images of the same class are highly similar, lowlevel image features of the object of interest, e.g., shape of vertebra body in case of spine images, have to be identified for efficient indexing.…”

Section: Introductionmentioning

confidence: 99%

Automatic Estimation of Orientation and Position of Spine in Digitized X-rays using Mathematical Morphology

Kumar

Thomas

2005

J Digit Imaging

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In this paper, we propose a method for automatic determination of position and orientation of spine in digitized spine X-rays using mathematical morphology. As the X-ray images are usually highly smeared, vertebrae segmentation is a complex process. The image is first coarsely segmented to obtain the location and orientation information of the spine. The state-of-the-art technique is based on the deformation model of a template, and as the vertebrae shape usually shows variation from case to case, accurate representation using a template is a difficult process. The proposed method makes use of the vertebrae morphometry and gray-scale profile of the spine. The top-hat transformation-based method is proposed to enhance the ridge points in the posterior boundary of the spine. For cases containing external objects such as ornaments, H-Maxima transform is used for segmentation and removal of these objects. The Radon transform is then used to estimate the location and orientation of the line joining the ridge point clusters appearing on the boundary of the vertebra body. The method was validated for 100 cervical spine X-ray images, and in all cases, the error in orientation was within the accepted tolerable limit of 15-. The average error was found to be 4.6-. A point on the posterior boundary was located with an accuracy of þ À5.2 mm. The accurate information about location and orientation of the spine is necessary for fine-grained segmentation of the vertebrae using techniques such as active shape modeling. Accurate vertebrae segmentation is needed in successful feature extraction for applications such as content-based image retrieval of biomedical images.

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Section: Introductionmentioning

confidence: 99%

Automatic Estimation of Orientation and Position of Spine in Digitized X-rays using Mathematical Morphology

Kumar

Thomas

2005

J Digit Imaging

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“…At the same time, new standards like MPEG-7 [1] have become available, allowing us to enrich media content with semantic content annotations, which in turn facilitates new forms of multimedia experience, like search on specific topics or semantics-based content selection and filtering.…”

Section: Introductionmentioning

confidence: 99%

“…MPEG-21 is an emerging ISO/IEC standard that aims at addressing these new challenges by defining a normative open framework for multimedia delivery and consumption involving all parties in the delivery and consumption chain 1 . One of the driving visions of these efforts is Universal Multimedia Access (UMA), where users can consume any multimedia resource anywhere at any time.…”

Section: Introductionmentioning

confidence: 99%

Toward Semantic Web Services for Multimedia Adaptation

Jannach

Leopold

Timmerer

et al. 2004

Web Information Systems – WISE 2004

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Abstract. Universal Multimedia Access (UMA), where users can consume any multimedia resource anywhere at any time, is the driving vision of ongoing ISO/IEC Moving Picture Experts Group (MPEG) standardization efforts. In that context, intelligent adaptation means that before resources are sent over the network, they are prepared according to the client's device capabilities, the network conditions, or even the user's content preferences. In this paper, we argue that Semantic Web Services can serve as a key enabling technology to achieve the goals of UMA. As the standards evolve, more and more specialized software tools will be available that provide specific functionalities for adapting the media in different dimensions. When the functionality of such tools is described declaratively with the means of Semantic Web Services technology, intelligent adaptation network nodes can be developed, capable of automatically composing multi-step adaptation sequences and dynamically integrating such services available on the Web. This paper describes the architecture and a prototypical implementation of an intelligent adaptation node that supports automatic, knowledge-based service composition which is made possible by the shared domain ontology defined in MPEG metadata standards.

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“…Unlike text, a medium for which there is a large and well established body of information retrieval methodology [1], time-based media recordings such as audio and video cannot be straightforwardly mapped to verbal descriptions, remaining the subject of intense research activity. Although there appears to be no definite paradigm in this area, standards such as MPEG-7 [2,3] are starting to emerge which aim at adding descriptive annotation and structure to multimedia data. Since manual annotation is mostly impractical given the large and increasing volumes of time-based recordings available, automated solutions have been sought.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Structure of Media Stream Interactions for Multimedia Browsing

Luz

Bouamrane

2006

Lecture Notes in Computer Science

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Abstract. This paper presents an approach to the issue of adding structure to recordings of collaborative meetings supported by an audio channel and a shared text editor. The virtual meeting environment used is capable of capturing and broadcasting speech, gestures and editing operations in real-time, so recording results in continuous multimedia data. We describe the implementation of a browser which explores simple linkage patterns between these media to support information retrieval through non-linear browsing, and discuss audio segmentation issues arising from this approach.

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MPEG-7: the generic multimedia content description standard, part 1

Cited by 200 publications

References 1 publication

Automatic Estimation of Orientation and Position of Spine in Digitized X-rays using Mathematical Morphology

Automatic Estimation of Orientation and Position of Spine in Digitized X-rays using Mathematical Morphology

Toward Semantic Web Services for Multimedia Adaptation

Exploring the Structure of Media Stream Interactions for Multimedia Browsing

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