Results 1 to 10 of about 47,194 (280)

An Efficient Hierarchical Video Coding Scheme Combining Visual Perception Characteristics

open access: yesThe Scientific World Journal, 2014
Different visual perception characteristic saliencies are the key to constitute the low-complexity video coding framework. A hierarchical video coding scheme based on human visual systems (HVS) is proposed in this paper.
Pengyu Liu, Kebin Jia
doaj   +1 more source

An improved symbol reduction technique based Huffman coder for efficient entropy coding in the transform coders

open access: yesIET Image Processing, 2021
Entropy coding is the essential block of transform coders that losslessly converts the quantized transform coefficients into the bit‐stream suitable for transmission or storage.
Vikrant Singh Thakur   +2 more
doaj   +1 more source

A survey on recent advances in digital video technology

open access: yesTongxin xuebao, 2003
This paper reviews some recent advances in the video techniques such as video coding, video stream analysis, and video stream transportation etc. The survey clearly shows that while the standard compliant video coding is still attractive in application ...
HU Dong1, ZHENG Bao-yu2
doaj   +2 more sources

A Coding and Postprocessing Framework of Multiview Distributed Video for Wireless Video Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
In many surveillance application scenarios of wireless video sensor networks (WVSNs), a number of video sensors are deployed, and multidimension monitored the visual information in a region of interest, forming multiview videos.
Chong Han, Lijuan Sun, Jian Guo
doaj   +1 more source

Medical Ultrasound Video Coding with H.265/HEVC Based on ROI Extraction. [PDF]

open access: yesPLoS ONE, 2016
High-efficiency video compression technology is of primary importance to the storage and transmission of digital medical video in modern medical communication systems.
Yueying Wu   +3 more
doaj   +1 more source

CTU Layer Rate Control Algorithm in Scene Change Video for Free-Viewpoint Video

open access: yesIEEE Access, 2020
At present, the rate control algorithm for multiview high-efficiency video coding (MV-HEVC) does not have the capability of efficient coding tree unit(CTU) layer bit allocation, and the video quality varies greatly for sequences with sudden scene changes
Tao Yan   +5 more
doaj   +1 more source

Blocking artefacts reduction based on a ripple matrix permutation image of high‐frequency images in the wavelet domain

open access: yesIET Image Processing, 2021
Block compressed sensing (BCS) approaches based on matrix permutations effectively reduce blocking artefacts in the high‐quality reconstruction of images. To further reduce the blocking artefacts, the paper proposes a novel method for their processing in
Xiuli Du   +3 more
doaj   +1 more source

Complexity reduction method for High Efficiency Video Coding encoding based on scene-change detection and image texture information

open access: yesInternational Journal of Distributed Sensor Networks, 2019
Recently, as demand for high-quality video and realistic media has increased, High Efficiency Video Coding has been standardized. However, High Efficiency Video Coding requires heavy cost in terms of computational complexity to achieve high coding ...
Hong-rae Lee   +3 more
doaj   +1 more source

Omni directional video coding rate distortion optimization method based on weighted-to-spherically-uniform structural similarity

open access: yesDianxin kexue, 2019
Aiming at the shortcomings of the coding rate distortion model in traditional video coding,considering the characteristics of equal rectangular omnidirectional video,a method of omnidirectional video coding rate distortion optimization based on spherical
Yufeng ZHOU   +4 more
doaj   +2 more sources

IV-SSIM—The Structural Similarity Metric for Immersive Video

open access: yesApplied Sciences
In this paper, we present a new objective quality metric designed for immersive video applications—IV-SSIM. The proposed IV-SSIM metric is an evolution of our previous work—IV-PSNR (immersive video peak signal-to-noise ratio)—which became a commonly used
Adrian Dziembowski   +2 more
doaj   +1 more source

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