• Real-time foveation techniques for low bit rate video

    2003-2-1 · Then, we demonstrate that foveation, as described by this model, can be incorporated into standard motion compensation and discrete cosine transform (DCT)-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.

  • Cited by: 55
  • 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

  • Foveation embedded DCT domain video transcoding

    2005-12-1 · 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%.

  • BIT RATE REDUCTION FOR H.264/AVC VIDEO BASED ON

    2019-7-30 · with UM hexagonal, based on the comparison result author concluded that designed model gives better performance and applicable for the real time video coding applications. Anthon et al. [7] has proposed new algorithm used in reduction of the bit planes in Distributed Video Coding (DVC).

  • 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

  • MULTILAYER BIT ALLOCATION FOR VIDEO ENCODING

    2020-1-11 · MULTILAYER BIT ALLOCATION FOR VIDEO ENCODING Elavarasan.R 1 and Dr.Sunitha Abburu 2 investigate that the R-D characteristics of color video signal in traditional transform-based video In Foveation Model human observes the video picture to identify the regions where the video

  • 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,

  • 360Cast: Foveation-Based Wireless Soft Delivery for 360

    2020-1-28 · 360Cast: Foveation-Based Wireless Soft Delivery for 360-Degree Video Lu Yujun,Takuya Fujihashi,Shunsuke Saruwatari and Takashi Watanabe Graduate School of Information Science and Technology, Osaka University, Osaka, Japan Abstract—Wireless 360-degree video delivery provides vir-tual reality (VR) immersive experience where each user can

  • High quality, low delay foveated visual

    2005-4-1 · Based on a maximum source throughput criterion, the source and channel video transmission rates and the target video coding bit rate are adaptively decided according to the channel dynamics. In the simulations, we use the channel throughput, the spatial/temporal resolution, and the transmission delay as criteria to compare the performance of

  • Cited by: 11
  • 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)

  • Foveated video compression with optimal rate control

    2015-6-29 · Foveated Video Compression with Optimal Rate Control Sanghoon Lee, Marios S. Pattichis, and Alan Conrad Bovik, Fellow, IEEE Abstract— Recently, foveated video compression algorithms have been proposed which, in certain applications, deliver high-quality video at reduced bit rates by seeking to match the nonuniform sampling of the human retina.

  • Spatialchromatic Foveation for Gaze Contingent Displays

    2009-8-26 · perceptually-based spatialchromatic foveation metric is derived. video encoding and processing. It attempts to present the highest level of detail (LOD) to the viewer’s gaze direction by coupling in which the contrast modulation introduced by bit-depth reduction is not perceivable by a human observer while the bit

  • Off-line Foveated Video: Effects on Compression and

    2007-3-14 · Off-line foveation • Study perceptual effects (eye-movements, subjective quality) of off-line foveated displays. • Video compression! Ex: Off-line foveation prior to encoding with H.264 gave, on six tested videos, an average bit-rate reduction of 20 %

  • 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,

  • Dynamic Gaze Span W indow based Foveation for

    2002-11-1 · Dynamic Gaze Span W indow based Foveation for Perceptual Media Streaming Javed I. Khan & Oleg Komogortsev Abstract The human vision offers a tremendous scope of data compression. Only about 2 degree in our about 140 degrees vision span has sharp vision. A fascinating body of research exists in vision and psychology geared

  • 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)

  • Predictive Perceptual Compression for Real Time Video

    2006-6-29 · Based on this approach, we have implemented a real-time foveation aware perceptual video streaming transcoder with a fixed target bit-rate. Our transcoder system intakes live perceptual information related to the subject’s eye position. Head movement is monitored via an eye-tracker, and a magnetic head-tracker.

  • (PDF) Foveation-Based Error Resilience and Unequal Error

    Foveated Visual Processing TARGET VIDEO CHANNEL for Multimedia Applications CAMERA FOVEATION A TRACKING ENCODER ENCODER The recent research advances of foveation-based image and video compression [14, 20–22] has coincided with recent improvements in the methods used for deter- FADING mining and tracking human fixation points.

  • Low Complexity Video Compression Using Moving Edge

    2018-7-19 · DCT based foveation fllter is used to reduce complexity for detecting foveation regions. For implementing low complexity encoders, a coding paradigm named dis-tributed video coded (DVC) based on Wyner-Ziv [8] and Slepian-Wolf [9] infor-mation theory has

  • أفكار مقترحة لمشاريع التخرج لتخصص هندسة الاتصالات

    2020-2-29 · 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 Steganography. 59. Design and Analysis of IIR Filters with Initialization.

  • COMPARATIVE STUDY OF MPEG-4 AND H.264 VIDEO

    2018-11-23 · foveation based video coding yields higher source is encoded with low bit-rate by a video encoder. The compressed video data is (local bandwidth reduction) [4], saliency detection based foveating [6] and wavelet based foveated compression [3].

  • Spatialchromatic Foveation for Gaze Contingent Displays

    2009-8-26 · perceptually-based spatialchromatic foveation metric is derived. video encoding and processing. It attempts to present the highest level of detail (LOD) to the viewer’s gaze direction by coupling in which the contrast modulation introduced by bit-depth reduction is not perceivable by a human observer while the bit

  • (PDF) Foveation-Based Error Resilience and Unequal Error

    Foveated Visual Processing TARGET VIDEO CHANNEL for Multimedia Applications CAMERA FOVEATION A TRACKING ENCODER ENCODER The recent research advances of foveation-based image and video compression [14, 20–22] has coincided with recent improvements in the methods used for deter- FADING mining and tracking human fixation points.

  • Low Complexity Video Compression Using Moving Edge

    2018-7-19 · DCT based foveation fllter is used to reduce complexity for detecting foveation regions. For implementing low complexity encoders, a coding paradigm named dis-tributed video coded (DVC) based on Wyner-Ziv [8] and Slepian-Wolf [9] infor-mation theory has

  • أفكار مقترحة لمشاريع التخرج لتخصص هندسة الاتصالات

    2020-2-29 · 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 Steganography. 59. Design and Analysis of IIR Filters with Initialization.

  • Content adaptive pre-filtering for video compression

    2020-1-13 · Bitrate reduction with little to no degradation in visual perception is a long-standing challenge in video coding. This paper targets this challenge by adaptively filtering the content prior to video compression and in the preprocessing stage. This is done by applying a bilateral filter where the filter parameters are selected according to regional content complexity and estimated visual

  • Predictive Perceptual Compression for Real Time Video

    2005-8-25 · control the bit-rate for MPEG-4/ H.263 stream for foveated encoding. 1.2 Impact of Feedback Delay & Eye Speed The CSF oriented studies are mostly point or gaze-based, and have yet to incorporate dynamic eye velocity with feedback delay into a video

  • VideoSet: A large-scale compressed video quality dataset

    2017-11-28 · the JPEG image and the H.264/AVC video, respectively. To build a large-scale JND-based video quality dataset, an alliance of aca-demic and industrial organizations was formed and the subjective test data were acquired in Fall 2016. The resulting dataset is called the ‘‘VideoSet” an acronym for ‘‘Video Subject Evaluation Test (SET)”.

  • Zhou Wang's Publications University of Waterloo

    2021-2-24 · G. Varghese and Z. Wang, "Video denoising based on a spatiotemporal Gaussian scale mixture model," IEEE Transactions on Circuit and Systems for Video Technology, vol. 20, no. 7, pp. 1032-1040, July 2010. [PDF, 530K] [Web and code] 62. S. B.

  • Contour Approximation can Lead to Faster Object Based

    Javed I. Khan and Oleg Komogortsev Media Communications and Networking Research Laboratory Department of Math & Computer Science, Kent State University 233 MSB, Kent, OH 44242 [email protected] 1 Abstract Object aware video rate transcoding can significantly improvement the perceptual quality of relatively low bit-rate video. However, precise object detection in arbitrary video