Results 21 to 30 of about 1,601,674 (301)

Covert Channel Construction Method Based on HTTP Composite Protocols

open access: yesJournal of Electrical and Computer Engineering, 2022
Aiming at the problems of low concealment of existing storage-type covert channels, high bit error rate, and low transmission rate of time-type covert channels, this paper proposes a method of constructing covert channels based on HTTP protocol ...
Longxing Jin   +4 more
doaj   +1 more source

Image-dependent spatial shape-error concealment [PDF]

open access: yes, 2008
Existing spatial shape-error concealment techniques are broadly based upon either parametric curves that exploit geometric information concerning a shapepsilas contour or object shape statistics using a combination of Markov random fields and maximum a ...
Sohel, Ferdous   +11 more
core   +1 more source

Spatio-temporal error concealment scheme based on H.264/AVC

open access: yesTongxin xuebao, 2007
In order to reduce the influence of transmission errors on the reconstructed image quality in decoder,a novel spatio-temporal error concealment scheme was proposed.A hypothesis was made that the corrupted macro blocks(MB) distributed randomly in the ...
FENG Bin, ZHU Guang-xi, LIU Wen-yu
doaj   +2 more sources

Classification-Based Spatial Error Concealment for Visual Communications

open access: yesEURASIP Journal on Advances in Signal Processing, 2006
In an error-prone transmission environment, error concealment is an effective technique to reconstruct the damaged visual content. Due to large variations of image characteristics, different concealment approaches are necessary to accommodate the ...
Chen Meng, Zheng Yefeng, Wu Min
doaj   +1 more source

High-Performance Region-of-Interest Image Error Concealment with Hiding Technique

open access: yesJournal of Electrical and Computer Engineering, 2010
Recently region-of-interest (ROI) based image coding is a popular topic. Since ROI area contains much more important information for an image, it must be prevented from error decoding while suffering from channel lost or unexpected attack.
Shih-Chang Hsia   +2 more
doaj   +1 more source

Spatial error concealment method based on tensor voting

open access: yesTongxin xuebao, 2011
As the existing spatial error concealment algorithms is lack of the recovery accuracy in complex texture areas,a spatial error concealment method based on tensor voting was proposed,which extracted structural information by using tensor voting.On this ...
GAN Nan   +4 more
doaj   +2 more sources

Spiral-Like Pixel Reconstruction Algorithm for Spatiotemporal Video Error Concealment

open access: yesIEEE Access, 2018
This paper proposes efficient error concealment (EC) algorithms that use a spiral-like pixel reconstruction (SPR) scheme on the H.264/AVC joint model simulation platform.
Huang-Chia Shih   +2 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld   +5 more
wiley   +1 more source

Error Concealment using Data Hiding in Wireless Image Transmission

open access: yesTelfor Journal, 2016
The transmission of image/video over unreliable medium like wireless networks generally results in receiving a damaged image/video. In this paper, a novel image error concealment scheme based on the idea of data hiding and Set Partitioning In ...
A. Akbari   +3 more
doaj   +1 more source

Time-Delay Signature Concealment in a Security-Enhanced Optical System With Dual-Loop Electro-Optic Self- Feedback Phase Encryption

open access: yesIEEE Photonics Journal, 2023
In this paper, a novel phase encryption scheme based on a dual-loop electro-optic self-feedback structure is proposed for time-delay signature (TDS) concealment.
Bin Tang   +7 more
doaj   +1 more source

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