Showing 181 - 200 results of 3,210 for search '"video"', query time: 0.08s Refine Results
  1. 181

    Precision Security: Integrating Video Surveillance with Surrounding Environment Changes by Wenfeng Wang, Xi Chen, Guiwei Zhang, Jing Qian, Peng Wei, Boqian Wu, Hongwei Zheng

    Published 2018-01-01
    “…Video surveillance plays a vital role in maintaining the social security although, until now, large uncertainty still exists in danger understanding and recognition, which can be partly attributed to intractable environment changes in the backgrounds. …”
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  2. 182

    Utilizing Implicit User Feedback to Improve Interactive Video Retrieval by Stefanos Vrochidis, Ioannis Kompatsiaris, Ioannis Patras

    Published 2011-01-01
    “…This paper describes an approach to exploit the implicit user feedback gathered during interactive video retrieval tasks. We propose a framework, where the video is first indexed according to temporal, textual, and visual features and then implicit user feedback analysis is realized using a graph-based methodology. …”
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    A video steganalysis method based on coding cost variation by Jianyi Liu, Cong Zhang, Ru Zhang, Yi Li, Jie Cheng

    Published 2021-02-01
    “…Aiming at the problems existing in existing steganalysis algorithms, this article proposes Motion Vector Coding Cost Change video steganalysis features based on Improved Motion Vector Reversion-Based features and Subtractive Probability of Coding Cost Optimal Matching features based on Subtractive Probability of Optimal Matching features from the perspective of the change of coding cost. …”
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    No-feedback rate control algorithm for Wyner-Ziv video coding by SONG Bin, YANG Ming-ming, QIN Hao, HE Hong

    Published 2011-01-01
    “…To avoid using feedback channel,an encoder rate control algorithm for Wyner-Ziv video coding was proposed.Firstly,using the target frame-rate and the target bit-rate,It could determine the bit allocation for each group-of-picture(GOP).According to the correlation between adjacent frames,the bit budget for a GOP were further allocated to key frame and Wyner-Ziv frames within the GOP by dynamically choosing quantization parameter and quantization matrices.Then,with refinement of correlation-noise model(CNM) parameter,different LDPC(low-density parity-check) check matrices might be chosen for each bitplane to control the encoding bitrate of Wyner-Ziv frame.Experimental results show that the difference between expected target bitrate and actual encoded bitrate is less than 0.57% using the proposed method,and compared with existing algorithm,average PSNR(peak signal-to-noise ratio) of decoded video quality can be increased by 1 dB.In addition,our algorithm slightly increases encoder complexity,and can be used in practice.…”
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    The Leadership Skills Series: Utilizing Videos to Address Leadership Skills by Matthew Sowcik, Jennifer Wert, Jera Niewoehner-Green

    Published 2018-09-01
    “… This initial publication in the Leaders Skills Series provides Extension professionals with a brief introduction on how to utilize short leadership videos available on the internet to develop specific skills in large or small group settings. …”
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    A Calculation Method for Vehicle Movement Reconstruction from Videos by Hao Feng, Weiguo Shi, Feng Chen, Young-Ji Byon, Weiwei Heng, Shaoyou Pan

    Published 2020-01-01
    “…The movements of vehicles in the video are captured by active calibration regions while the spatial consistency between the vehicle’s driving track and the calibration information are in sync. …”
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  16. 196

    Fanny Lignon, dir., Genre et jeux vidéo (2015) by Jean-Louis Trudel

    Published 2018-12-01
    Subjects: “…video games…”
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  17. 197

    Application of Variable Bit Rate Video in IPTV on Demand Services by Chuanfei Luo, Weijia Shi, Qing Xiao

    Published 2014-05-01
    “…Based on the engineering model for VBR video traffic, the flow characteristics of VBR video based on user requested arriving time interval was analyzed. …”
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    Kernel technologies and applications of AVS2 video coding standard by Siwei MA, Falei LUO, Tiejun HUANG

    Published 2017-08-01
    “…A brief introduction was given to the development history of AVS video coding standards.Then an overview of the key technologies adopted in AVS2 video coding standard (GB/T 33475.2-2016) was provided,including flexible prediction partition,multiple hypothesis prediction,optimized two-level transform,adaptive loop filter and background picture model based prediction coding for scene video.Compared to the AVS1,AVS2 can achieve more than 50% bits saving.And compared to HEVC/H.265,AVS2 can achieve significant coding efficiency improvement for scene video coding.Moreover,the applications of AVS standard in digital TV broadcasting was introduced briefly.…”
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