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multimedia content access: algorithms and systems III

The proceedings contain 15 papers. The topics discussed include: discriminative genre-independent audio-visual scene change detection;a random walk through human behavior;flexible user interface for efficient content-based video surveillance retrieval: design and evaluation;an automated object-level video editing tool;ImageSeeker: a content-based image retrieval system;extraction of salient regions of interest using visual attention models;research on subjective stereoscopic image quality assessment;image quality assessment in multimedia applications;document description: what works for images should also work for text?;an annotation database for multimedia scientific data;a model of multimodal fusion for medical applications;and binary and nonbinary description of hypointensity for search and retrieval of brain MR images.

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Proceedings of SPIE-IS and T Electronic Imaging - multimedia content access: algorithms and systems II

Proceedings of SPIE-IS and T Electronic Imaging - Multimedia...

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multimedia content access: algorithms and systems II

ISBN: (纸本)9780819469922

The proceedings contain 27 papers. The topics discussed include: hierarchical photo stream segmentation using context;giving order to image queries;logo detection using wavelet co-occurrence histograms;a novel approach to personal photo album representation and management;facial features matching using a virtual structuring element;picture management using person retrieval for consumer image collections;distributed wireless face recognition system;improving multimedia retrieval with a video OCR;improving scene detection by using gradual shot transitions as cues from film grammar;semantic video indexing using context-dependent fusion;highlight summarization in golf videos using audio signals;content-based image retrieval using greedy routing;evaluation of content-based features for user-centered image retrieval in small medial collections;and visual search engine for product images.

关键词： multimedia services

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Proceedings of SPIE-IS and T Electronic Imaging - multimedia content access: algorithms and systems

Proceedings of SPIE-IS and T Electronic Imaging - Multimedia...

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multimedia content access: algorithms and systems

ISBN: (纸本)0819466190

The proceedings contain 25 papers. The topics discussed include: a model-based conceptual clustering of moving objects in video surveillance;image watermarking based on color quantization process;search and retrieval of medical images for improved diagnosis of neurodegenerative diseases;assessment of end-user response to sports highlights extraction for personal video recorders;examining user interactions with video retrieval systems;automatic and user-centric approaches to video summary evaluation;ontology driven search engine;adaptation of video game UVW mapping to 3D visualization of gene expression patterns;classification of yeast cells from image features to evaluate pathogen conditions;data mining learning bootstrap through semantic thumbnail analysis;a spatiotemporal decomposition strategy for personal home video management;and analysis of unstructured video based on camera motion.

关键词： multimedia services

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Proceedings of SPIE-IS and T Electronic Imaging - multimedia on Mobile Devices 2012;and multimedia content access: algorithms and systems VI

Proceedings of SPIE-IS and T Electronic Imaging - Multimedia...

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multimedia on Mobile Devices 2012;and multimedia content access: algorithms and systems VI

ISBN: (纸本)9780819489517

The proceedings contain 31 papers. The topics discussed include: location-aware gang graffiti acquisition and browsing on a mobile device;dietary intake assessment using integrated sensors and software;FCam for multiple cameras;continuously adjustable Pulfrich spectacles for mobile devices;parameters of the human 3D gaze while observing portable autostereoscopic display: a model and measurement results;deblocking of mobile stereo video;SUPL support for mobile devices;measuring ionizing radiation with a mobile device;design and evaluation of security multimedia warnings for children's smartphones;using wi-fi hotspots as an intrusion vector into corporate networks;frame rate up-conversion assisted with camera auto exposure information;and fused fibonacci-like (p,q) sequences with compression and barcoding applications.

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Proceedings of SPIE-IS and T Electronic Imaging - multimedia on Mobile Devices 2011;and multimedia content access: algorithms and systems V

Proceedings of SPIE-IS and T Electronic Imaging - Multimedia...

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multimedia on Mobile Devices 2011;and multimedia content access: algorithms and systems V

ISBN: (纸本)9780819484185

The proceedings contain 37 papers. The topics discussed include: mobile 3D quality of experience evaluation: a hybrid data collection and analysis approach;overcome the shortcoming in mobile stereoscopy;comparative study of autostereoscopic displays for mobile devices;subjective evaluation of mobile 3D video content: depth range versus compression artifacts;development of 3D mobile receiver for stereoscopic video and data service in T-DMB;a right scaled depth sense formed by using a distorted objective space based on CG stereoscopy;smart travel guide: from internet image database to intelligent system;revised benchmarking of contact-less fingerprint scanners for forensic fingerprint detection: challenges and results for chromatic white light scanners (CWL);and optimizing bandwidth and storage requirements for mobile images using perceptual-based JPEG recompression.

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Proceedings of SPIE-IS and T Electronic Imaging - Imaging and Printing in a Web 2.0 World;and multimedia content access: algorithms and systems IV

Proceedings of SPIE-IS and T Electronic Imaging - Imaging an...

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Imaging and Printing in a Web 2.0 World;and multimedia content access: algorithms and systems IV

ISBN: (纸本)9780819479334

The proceedings contain 36 papers. The topics discussed include: contextual advertisement placement in printed media;content-based image retrieval with ontological ranking;a case study on rule-based and CRF-based author extraction methods;new performance evaluation models for character detection in images;navigating web search results;cloud-based printing for mobile devices;using ePub as framework for the automated collection, tagging, and transformation of web content for cross-media publication;a web-based rapid assessment tool for production publishing solutions;an investigation of document aesthetics for web-to-print repurposing of small-medium business marketing collateral;learning from graphic designers: using grids as a scaffolding for automatic print layout;ubiquitous picture-rich content representation;a novel XML-based document format with printing quality for web publishing;and faces from the web: automatic selection and composition of media for casual screen consumption and printed artwork.

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Image Classification of multimedia Platforms With Texture algorithms and Neural Networks

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IEEE access 2025年 13卷 46478-46494页

作者： Sauzameda-Gonzalez, Mauricio Alvarez-Borrego, Josue Guerra-Rosas, Esperanza Ctr Invest Cient & Educ Super Ensenada CICESE Ensenada 22860 Baja California Mexico Univ Autonoma Baja California Fac Ingn Arquitectura & Diseno Ensenada 22860 Baja California Mexico

In this paper, a methodology for real-time image classification on multimedia platforms has been developed. For this purpose, six feedforward neural network models were trained with images from two databases, which were preprocessed by three texture extraction methods: local binary pattern-uniform (LBP-U), gray level co-occurrence matrix (GLCM), and wavelet image scattering (WIS). The databases used consist of 157,448 images of the sections with the thumbnails of the platform content (mosaics) representing 14 classes and 38,214 images with the descriptions of the available content (descriptors) representing 11 classes, where all images have a resolution of 1280 x 720 pixels. The six models (three for mosaics and three for descriptors) were validated with images from the databases, which were not part of the training process, to obtain their performance metrics. The training and validation process was performed 30 times, and the average results were compared. The most outstanding models for each database were the neural networks trained with the wavelet image scattering method, with metrics of 99.97 +/- 0.01 % accuracy, 99.99 +/- 0.01 % specificity, 99.84 +/- 0.06 % sensitivity, 99.59 +/- 0.13 % precision and 99.71 +/- 0. 08 % of F1 score with a response time of 0.7349 seconds for the model trained with mosaics and with metrics of 99.90 +/- 0.03 % of accuracy, 99.94 +/- 0.02 % of specificity, 99.58 +/- 0.15 % of sensitivity, 98.63 +/- 0.55 % of precision and 99.09 +/- 0.30 % of F1 score with a response time of 0.6227 seconds for the model trained with descriptor images. The results are very significant due to the high efficiency obtained and confirm the effectiveness of the models with the WIS method for the classification of multimedia platform images with the characteristics of the databases used. It is suggested that the remaining methods be adjusted to improve their performance.

关键词： Gray-scale Mathematical models Symmetric matrices Scattering Real-time systems Image classification Statistical analysis Object recognition multimedia databases Histograms Classification method neural networks texture analysis methods local binary pattern grayscale co-occurrence matrix performance metrics

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Cognitive spectrum access, multimedia content delivery, and full-duplex relaying in wireless networks

Cognitive spectrum access, multimedia content delivery, and ...

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作者： Ma, Bojiang University of British Columbia

学位级别：博士

Due to the growing number of wireless communication devices and emerging bandwidth-intensive applications, the demand of data usage is increasing rapidly. Utilizing various radio access technologies and multiple frequency bands in wireless networks can provide efficient solutions to meet the growing demand of data. These techniques are promising for the fifth generation (5G) wireless communication systems. However, to fully exploit their benefits, spectrum and spatial reuse, power saving, throughput and utility enhancement are crucial issues. In this thesis, we propose different resource allocation algorithms to address the aforementioned issues in wireless communication networks. First, we study the resource allocation problem for a hybrid overlay/underlay cognitive cellular network. We propose a hybrid overlay/underlay spectrum access mechanism to improve the spectrum and spatial reuse. We formulate the resource allocation problem as a coalition formation game among femtocell users, and analyze the stability of the coalition structure. We propose an efficient algorithm based on the solution concept of recursive core. The proposed algorithm achieves a stable and efficient spectrum allocation. Next, we study the resource allocation problem for multimedia content delivery in millimeter wave (mmWave) based home networks. We characterize different usage scenarios of multimedia content delivery. We formulate a joint power and channel allocation problem, which captures the spectrum and spatial reuse of mmWave communications, based on a network utility maximization framework. The problem is a non-convex mixed integer programming (MIP) problem. We reformulate the non-convex MIP problem into a convex MIP problem and propose a resource allocation algorithm based on the outer approximation method. We also develop an efficient heuristic algorithm which has a substantially lower complexity than the outer approximation based algorithm. Finally, we study full-duplex relay-assiste

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Scalable encryption for multimedia content access control

Scalable encryption for multimedia content access control

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IEEE International Conference on multimedia and Expo (ICME)

作者： H.H. Yu Panasonic Information and Networking Technologies Laboratories

Traditional cryptography systems treat every portion of a message (a video, an image, or an audio) equally and encrypt the entire message as a whole. As a result, those security systems often have only two states: access authorization and access denial. To facilitate multi-level access control with interoperability, scalable security mechanism is needed. Further, the availability of varying network bandwidth and diverse receiver device capabilities demand scalable and flexible approaches that are capable of adapting to changing network conditions as well as device capabilities. In this paper, we describe a multimedia encryption scheme that supports scalability. One desirable feature of the proposed scheme is its simplicity and flexibility in supporting scalable content access control.

关键词： Cryptography access control Signal processing algorithms Bit rate Channel capacity Authorization Scalability Protection Decoding Power system security

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Multimodal detection of highlights for multimedia content

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multimedia systems 2004年第6期9卷 586-593页

作者： Dagtas, S Abdel-Mottaleb, M Univ Arkansas Dept Informat Sci Little Rock AR 72204 USA Univ Miami Dept Elect & Comp Engn Coral Gables FL 33146 USA

We present a multimedia information analysis framework for content-based browsing of video. Specifically, we develop algorithms for the automated extraction of video highlights in sports video that are based on audio, text, and image features. The extracted annotations are used to build applications for selective browsing of sports videos. Such summarization techniques enable content-based indexing of multimedia documents for efficient storage and retrieval. In addition, in the context of the newly emerging standard MPEG-7, these methods will enable applications that use MPEG-7 descriptions. As this standard provides only the syntax for representing such descriptions and not specific algorithms for extracting them, these algorithms are of great value for establishing MPEG-7 as an accepted standard. We provide experimental results for the proposed algorithms on several hours of sports programs that prove the feasibility of efficient video access techniques in a multimedia environment.

关键词： multimedia systems

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