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  • video bit reduction based on foveation - thefitnesst.de

    2020-6-19  video bit reduction based on foveation. Reusing the motion vectors extracted from the incoming video bit stream usually results in nonoptimal video transcoding In foveation based video transcoding the incoming video stream is a uniform resolution video sequence while the output is a foveated video sequence. Information

  • Real-time foveation techniques for low bit rate video ...

    Cited by: 57
  • Foveation embedded DCT domain video transcoding ...

    Then, the encoded video bit stream is transcoded to a H.263 video bit stream using constant quantization parameter Q = 10. Fig. 13 shows the resulting bits for each coded frame with and without foveation, respectively. As can be seen, the average bit rate reduction due to foveation is more than 35%.

  • A practical foveation-based rate-shaping mechanism

    In [37], a rate shaper was proposed based on a DCT-domain foveation model in order to implement a lightweight rate reduction scheme for MPEG-1 bit streams. DCT coefficients smaller than their ...

  • Foveation Embedded DCT Domain Video Request PDF

    In this paper, we propose an embedded foveation image coding (EFIC) algorithm, which orders the encoded bitstream to optimize foveated visual quality at arbitrary bit-rates. A foveation-based ...

  • Adaptive foveation of MPEG video DeepDyve

    Adaptive foveation of MPEG video Adaptive foveation of MPEG video Reeves, T. H.; Robinson, J. A. 1997-02-01 00:00:00 Adaptive Foveation of MPEG Video Department T H Reeves of Systems Design University Ontario, of Waterloo Chada, N2L 3G1 Engineering J A Robinson Faculty of Engineering and Applied IScience Memorial University of Newfoundland Newfoundland, Canada, AIB 3X5

  • Adaptive Foveation of MPEG Video - Kent

    1999-9-5  Adaptive Foveation of MPEG Video T H Reeves Department of Systems Design Engineering University of Waterloo Ontario, Chada, N2L 3G1 [email protected] uwaterloo. ca ABSTRACT We report experiments on the ‘foveation’ of MPEG-standard video by a network-based rate adaptor. The rat e adaptor is controlled by input from receiving users,

  • Motion Estimation and Compensation of H.263 Video via ...

    2011-6-28  Depending on the video sequence, foveation used as a preprocessing step, gives a bit rate reduction of 30 70 . DCT domain foveation, however, gives 30 50 reduction in bit rate. In this paper, motion vector foveation is used in the video encoding loop, with both the above methods to get an additional 2 reduction in bit rate for an H.263 video encoder.

  • Real-Time Foveation Techniques for Low Bit Rate Video

    2017-7-3  based video coding techniques for low bit rate video coding, such as the H.263 or MPEG-4 video coding standards, without incurring prohibitive complexity overhead. We demonstrate that foveation in the DCT domain can actually result in computational speedups. The techniques presented can be implemented using the baseline modes in the video coding

  • 438 IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL

    2014-5-22  improve video quality in low bit rate transmissions [12]–[15]. However, it is unclear whether or not there is a way to quantify ... pling rate reduction based on foveation with no perceptual loss (we also compute this perceptual efficiency for a number of re-cent displaysto show the potential gain by such resampling). A

  • Foveation embedded DCT domain video transcoding ...

    Then, the encoded video bit stream is transcoded to a H.263 video bit stream using constant quantization parameter Q = 10. Fig. 13 shows the resulting bits for each coded frame with and without foveation, respectively. As can be seen, the average bit rate reduction due to foveation is more than 35%.

  • Real-Time Foveation Techniques for Low Bit Rate Video

    2017-7-3  based video coding techniques for low bit rate video coding, such as the H.263 or MPEG-4 video coding standards, without incurring prohibitive complexity overhead. We demonstrate that foveation in the DCT domain can actually result in computational speedups. The techniques presented can be implemented using the baseline modes in the video coding

  • Adaptive foveation of MPEG video DeepDyve

    Adaptive foveation of MPEG video Adaptive foveation of MPEG video Reeves, T. H.; Robinson, J. A. 1997-02-01 00:00:00 Adaptive Foveation of MPEG Video Department T H Reeves of Systems Design University Ontario, of Waterloo Chada, N2L 3G1 Engineering J A Robinson Faculty of Engineering and Applied IScience Memorial University of Newfoundland Newfoundland, Canada, AIB 3X5

  • REAL-TIME FOVEATION TECHNIQUES FOR H.263 VIDEO

    2017-7-3  foveation based video encoding: spatial domain foveation pre-processing and DCT domain foveation encoding. In our experi-ments, we observe that only the luminance component of the video needs to be foveated. Foveating the chrominance compo-nents give little reduction in the bit rate. 3.1. Spatial domain foveation preprocessing

  • 438 IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL

    2014-5-22  improve video quality in low bit rate transmissions [12]–[15]. However, it is unclear whether or not there is a way to quantify ... pling rate reduction based on foveation with no perceptual loss (we also compute this perceptual efficiency for a number of re-cent displaysto show the potential gain by such resampling). A

  • US7406207B2 - Multi-point predictive foveation for ...

    US7406207B2 US11/820,696 US82069607A US7406207B2 US 7406207 B2 US7406207 B2 US 7406207B2 US 82069607 A US82069607 A US 82069607A US 7406207 B2 US7406207 B2 US 7406207B2 Authority US United States Prior art keywords foveation plurality zones view based Prior art date 2002-04-15 Legal status (The legal status is an assumption and is not a legal conclusion.

  • افكار مشاريع التخرج أجنبية

    2020-4-1  55. Video Bit Reduction Based on Foveation 56. Soft Computing Techniques for Scene Cut Detection from MPEG Compressed Video 57. Web-Based Image Authentication using Invisible Fragile Watermark 58. Information Hiding and Detection using 59. Design

  • 60 MS TO GET IT RIGHT - Nvidia

    2019-3-29  •Some bit depth reduction is not noticeable in the periphery •The level of acceptable bit depth reduction is highly ... •Amount of foveation varied based on responses 1 up/ 1 down adaptive staircase Foveation level = shading rate per 2^N pixels (higher is better)

  • dan banser mining drc - CANOA SAN MINIATO

    video bit reduction based on foveation; dod web crusher de; Pictures Of Advantages Of Mining; build own copper ore crusher; cameroon mining corporation; Process Of Crushing Plant In Bataan; 400 tph impact coal crusher; mobile ball mill usa in guatemala; overview of ash handling system pdf

  • 欢迎来到李厚强个人主页 - USTC

    2018-7-8  Lei Yu, Houqiang Li, Weiping Li, “Wireless Scalable Video Coding Using a Hybrid Digital-Analog Scheme”, IEEE Transactions on Circuits and Systems for Video Technology, Vol. 24, No. 2, p331-345, Feb. 2014. Zhen Liu, Houqiang Li, Wengang Zhou, Ruizhen Zhao, Qi Tian, “Contextual Hashing for Large-Scale Image Search”, IEEE Transactions on Image Processing, Vol. 23, No. 4, p1606-1614,