The Experts below are selected from a list of 150 Experts worldwide ranked by ideXlab platform
Fan Ling-hui - One of the best experts on this subject based on the ideXlab platform.
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Performance Optimization Method of Streaming Media Based on Symbian Platform
Computer Engineering, 2012Co-Authors: Fan Ling-huiAbstract:In order to implement smooth playback of streaming media in real time by mobile terminals aiming at the high complexity of loop filtering in H.264/AVC and limited mobile terminals resource,this paper proposes a new approach for optimizing loop filtering algorithm and screen display.The improved method is put forward based on sequence of loop filtering and the calculation of boundary strength.The method can take full advantage of the storage speed advantage of register and spatial correlation of image,combining with the characteristics of Symbian Platform,and the output image of screen is optimized with double buffering and direct screen access.Experimental results demonstrate that the approach not only can improve the speed of decoding,but also can make fluency of the screen better.
Gabriel Y. Keung - One of the best experts on this subject based on the ideXlab platform.
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CCNC - The Peer-to-Peer Live Video Streaming for Handheld Devices
2008 5th IEEE Consumer Communications and Networking Conference, 2008Co-Authors: Susu Xie, Gabriel Y. KeungAbstract:As handheld devices are getting increasingly popular for delivering multimedia content, this paper presents our ongoing project in developing open source peer-to-peer video streaming solution over the Symbian Platform. Specifically, we describe the system architecture and key components, and discuss the challenges and limitations.
Fabio Gomes De ,souza - One of the best experts on this subject based on the ideXlab platform.
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Proposição de um simulador ginga-ncl para dispositivos portáteis
Universidade Federal do Amazonas, 2012Co-Authors: Fabio Gomes De ,souzaAbstract:O desenvolvimento de conteúdo interativo para sistemas de TV digital envolve um processo que requer o uso de diversas ferramentas; dentre as quais se destacam: ferramentas de edição, multiplexação, e apresentação de conteúdo interativo. Ao desenvolver aplicações interativas destinadas a dispositivos portáteis, tais como telefones celulares, é importante levar em consideração características particulares destes ambientes de apresentação, as quais podem variar entre dimensões de telas distintas, mecanismos de entrada de dados no sistema, suporte a canal de interatividade, dentre outros. A pesquisa realizada neste trabalho concentrou-se em ambientes de apresentação de aplicações interativas destinadas a receptores portáteis em conformidade com o Sistema Brasileiro de TV Digital. O simulador proposto, Simulador Ginga-NCL para Dispositivos Portáteis (SGDP), contempla funcionalidades essenciais, necessárias para simulação de um ambiente de apresentação de aplicações interativas. Sintonia do sinal de TV oneseg, extração de conteúdos interativos do fluxo de transporte, interpretação de scripts Lua, e controle de apresentação de aplicações NCL, são exemplos de funcionalidades essenciais contempladas pelo SGDP. Adicionalmente, o simulador proposto registra informações sobre o processamento, e apresentação, de conteúdos interativos para análise posterior por desenvolvedores. A plataforma Symbian foi escolhida para implantação do SGDP, e testes sistêmicos foram realizados para validação da ferramentaThe development of interactive content for digital TV systems involves a process that requires the use of several tools, among which stand out tools for editing, multiplexing, and presenting interactive content. When developing interactive applications for portable devices, such as cell phones, it is important to consider unique characteristics of those presentation environments, which may vary between different screen sizes, different data input mechanisms, support for interactive channel, among others. The research conducted in this study focused on presentation environments for interactive applications designed to run on portable receivers in accordance with the Brazilian Digital TV System. The proposed simulator, Simulador Ginga-NCL para Dispositivos Portáteis (SGDP) -- Ginga-NCL Simulator for Handhelds Devices -- includes essential features necessary for simulating a interactive application presentation environment. Tuning oneseg TV signal, extraction of interactive content from transport stream, Lua scripts interpretation, and NCL applications presentation control, are examples of essential features contemplated by SGDP. Additionally, the proposed simulator logs information about the processing and presentation of interactive content for further analysis by developers. The Symbian Platform was chosen for implementation of SGDP, and systemic tests were performed to validate the too
Hu Jian-ping - One of the best experts on this subject based on the ideXlab platform.
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Design and Implementation of the Video Sharing System Based on Smart Phone
Computer Science, 2008Co-Authors: Hu Jian-pingAbstract:A Symbian-based smartphone video sharing system is introduced,in which the videos captured by the smart phone onboard camera are uploaded to server after being compressed,then those videos can be downloaded from server to other smart phones,or be downloaded with video streaming and then be decompressed played.In this paper,the architecture of the system is described.The design and implementation of client applications is the most important part,including the implementation of H.264 video codec on the Symbian Platform and video transmission module.Finally a prototype system is implemented and the performance testing results are given.The practical significance of this system lies in its ability to satisfy the people's demand for that it is very convenient to share scene around each other,with the advantages of mobile communications.
F?bio Gomes De ,souza - One of the best experts on this subject based on the ideXlab platform.
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Proposi??o de um simulador ginga-ncl para dispositivos port?teis
Universidade Federal do Amazonas, 2012Co-Authors: F?bio Gomes De ,souzaAbstract:O desenvolvimento de conte?do interativo para sistemas de TV digital envolve um processo que requer o uso de diversas ferramentas; dentre as quais se destacam: ferramentas de edi??o, multiplexa??o, e apresenta??o de conte?do interativo. Ao desenvolver aplica??es interativas destinadas a dispositivos port?teis, tais como telefones celulares, ? importante levar em considera??o caracter?sticas particulares destes ambientes de apresenta??o, as quais podem variar entre dimens?es de telas distintas, mecanismos de entrada de dados no sistema, suporte a canal de interatividade, dentre outros. A pesquisa realizada neste trabalho concentrou-se em ambientes de apresenta??o de aplica??es interativas destinadas a receptores port?teis em conformidade com o Sistema Brasileiro de TV Digital. O simulador proposto, Simulador Ginga-NCL para Dispositivos Port?teis (SGDP), contempla funcionalidades essenciais, necess?rias para simula??o de um ambiente de apresenta??o de aplica??es interativas. Sintonia do sinal de TV oneseg, extra??o de conte?dos interativos do fluxo de transporte, interpreta??o de scripts Lua, e controle de apresenta??o de aplica??es NCL, s?o exemplos de funcionalidades essenciais contempladas pelo SGDP. Adicionalmente, o simulador proposto registra informa??es sobre o processamento, e apresenta??o, de conte?dos interativos para an?lise posterior por desenvolvedores. A plataforma Symbian foi escolhida para implanta??o do SGDP, e testes sist?micos foram realizados para valida??o da ferramenta.The development of interactive content for digital TV systems involves a process that requires the use of several tools, among which stand out tools for editing, multiplexing, and presenting interactive content. When developing interactive applications for portable devices, such as cell phones, it is important to consider unique characteristics of those presentation environments, which may vary between different screen sizes, different data input mechanisms, support for interactive channel, among others. The research conducted in this study focused on presentation environments for interactive applications designed to run on portable receivers in accordance with the Brazilian Digital TV System. The proposed simulator, Simulador Ginga-NCL para Dispositivos Port?teis (SGDP) -- Ginga-NCL Simulator for Handhelds Devices -- includes essential features necessary for simulating a interactive application presentation environment. Tuning oneseg TV signal, extraction of interactive content from transport stream, Lua scripts interpretation, and NCL applications presentation control, are examples of essential features contemplated by SGDP. Additionally, the proposed simulator logs information about the processing and presentation of interactive content for further analysis by developers. The Symbian Platform was chosen for implementation of SGDP, and systemic tests were performed to validate the tool
