نتایج جستجو برای: h264

تعداد نتایج: 55  

2014
Mansi Patel

A real-time moving object detection and tracking algorithm on H.264 compressed video streams for IP video surveillance systems. The goal is to develop algorithms which may be useful in a real-life industrial perspective by facilitating the processing of large numbers of video streams on a single server and to reduce the computational complexity and memory requirements by extraction information ...

Journal: :Journal of Network and Systems Management 2023

Abstract This paper presents new techniques and mechanisms for carrying streams of layered video using Scalable Video Coding (SVC) from servers to clients, utilizing the Packet Wash mechanism which is part Big Protocol (BPP). BPP was designed handle transfer packets high-bandwidth, low-latency applications, aiming overcome a number issues current networks have with high precision services. One ...

2007
Guizhong Liu Fan Zhao Guofu Qu

In this paper, an efficient compression algorithm for hyperspectral images is proposed, which is based on a modified coding framework of H.264/AVC. In virtue of the flexible and diverse prediction modes of H264/AVC, the most suitable ones are assigned for the macroblocks ( 16 16× pixel regions of a band) of the hyperspectral images other than for the whole band images. Only the 4 4× mode is emp...

Journal: :Telecommunication Systems 2009
Kostas E. Psannis Yutaka Ishibashi

The H.264/AVC standard introduces enhanced error robustness capabilities enabling resilient and reliable transmission of compressed video signals over wireless lossy packet networks. Those robustness capabilities are achieved by integrating some new error resilience tools that are essential for a proper delivery of real-time video services. Those tools include the Intra Refreshing (IR), Arbitra...

Journal: :The European respiratory journal 2014
Elisabeth T M Leermakers Agnes M M Sonnenschein-van der Voort Romy Gaillard Albert Hofman Johan C de Jongste Vincent W V Jaddoe Liesbeth Duijts

1 Pagnamenta A, Vanderpool RR, Brimioulle S, et al. Proximal pulmonary arterial obstruction decreases the time constant of the pulmonary circulation and increases right ventricular afterload. J Appl Physiol 2013; 114: 1586–1592. 2 Saouti N, Westerhof N, Helderman F, et al. Right ventricular oscillatory power is a constant fraction of total power irrespective of pulmonary artery pressure. Am J R...

2009
Michel Tousignant Patrick Boissy Hélène Corriveau Hélène Moffet Francois Cabana

The purpose of this study was to investigate the efficacy of in-home telerehabilitation as an alternative to conventional rehabilitation services following knee arthroplasty. Five community-living elders who had knee arthroplasty were recruited prior to discharge from an acute care hospital. A pre/post-test design without a control group was used for this pilot study. Telerehabilitation session...

Journal: :IEICE Transactions 2008
Kostas E. Psannis Yutaka Ishibashi

SUMMARY The H.264/AVC standard provides several new error-resilient features to enable the reliable transmission of compressed video signals over lossy packet networks. Flexible Macroblock Ordering (FMO) is one of the most interesting resilient features within the H.264/AVC standard. Unlike former standards, in which slices were constructed out of consecutive raster scan macroblocks, FMO sugges...

Journal: :CoRR 2014
Matthieu Moinard Isabelle Amonou Pierre Duhamel Patrice Brault

Video compression has been investigated by means of analysis-synthesis, and more particularly by means of inpainting. The first part of our approach has been to develop the inpainting of DCT coefficients in an image. This has shown good results for image compression without overpassing todays compression standards like JPEG. We then looked at integrating the same approach in a video coder, and ...

Journal: :Computer Networks 2016
Olfa Ben Rhaiem Lamia Chaari Wessam Ajib

Video streaming over mobile ad-hoc networks is becoming a highly important application for reliably delivering the content between the user and the content storage node. The key challenge is, hence, to address the impact of the user mobility on the quality of the delivered video. Accordingly, the pioneering concept of network coding (NC) emerges as a promising approach for improving the video t...

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