Results 61 to 70 of about 241,735 (174)

Detection of Double Compression in HEVC Videos Containing B-Frames

open access: yesJournal of Imaging
This study proposes a method to detect double compression in H.265/HEVC videos containing B-frames, a scenario underexplored in previous research. The method extracts frame-level encoding features—including frame type, coding unit (CU) size, quantization
Yoshihisa Furushita   +4 more
doaj   +1 more source

Perceptual Quality Study on Deep Learning based Image Compression

open access: yes, 2019
Recently deep learning based image compression has made rapid advances with promising results based on objective quality metrics. However, a rigorous subjective quality evaluation on such compression schemes have rarely been reported.
Akyazi, Pinar   +4 more
core   +1 more source

Reference frame list optimization algorithm in video coding by quality enhancement of the nearest picture

open access: yesTongxin xuebao, 2022
Interframe prediction is a key module in video coding, which uses the samples in the reference frames to predict those in the current picture, thus helps to represent the complex video by transmitting a small amount of the prediction residual.In lossy ...
Junyan HUO   +3 more
doaj   +2 more sources

Low Complexity H.265/HEVC Coding Unit Size Decision for a Videoconferencing System

open access: yesCybernetics and Information Technologies, 2015
With the development of Internet and video capture techniques, videoconferencing becomes still more popular. However, with the increased size of the video resolution, the volume of the raw videoconferencing video data increases dramatically.
Pan Zhaoqing, Chen Liming, Yan Wenjie
doaj   +1 more source

Fast Rate Estimation for RDO Mode Decision in HEVC

open access: yesEntropy, 2014
The latter-day H.265/HEVC video compression standard is able to provide two-times higher compression efficiency compared to the current industrial standard, H.264/AVC. However, coding complexity also increased.
Maxim P. Sharabayko, Oleg G. Ponomarev
doaj   +1 more source

A Robust and Improved Visual Quality Data Hiding Method for HEVC

open access: yesIEEE Access, 2018
This paper presents a novel and robust data hiding method based on H.265/High Efficiency Video Coding (HEVC) standard. To improve the robustness of data hiding, the embedded data are first encoded into the encoded data by using the BCH syndrome code (BCH
Yunxia Liu   +4 more
doaj   +1 more source

Efficient selective encryption schemes to secure video data and moving objects information for HEVC/H.265 using advanced encryption standard / Mohammed Ahmed Mohammed Saleh [PDF]

open access: yes, 2016
Due to the huge growth in communication and digital technologies in support of multimedia sharing, video security has recently attracted the attention of researchers. Since video data representation takes up a large amount of data, it has to be minimized
Mohammed Saleh, Mohammed Ahmed
core  

Impact Analysis of Baseband Quantizer on Coding Efficiency for HDR Video

open access: yes, 2016
Digitally acquired high dynamic range (HDR) video baseband signal can take 10 to 12 bits per color channel. It is economically important to be able to reuse the legacy 8 or 10-bit video codecs to efficiently compress the HDR video.
Su, Guan-Ming, Wong, Chau-Wai, Wu, Min
core   +1 more source

H.265/HEVC frame-level bitrate allocation algorithm considering video content

open access: yesTongxin xuebao, 2015
In order to guarantee the consistency between the coded bits and target bits,a frame-level bitrate allocation al-gorithm considering the content feature was proposed for H.265/HEVC codec.The main factors to affect the output bi-trate were first discussed
Wei LI, Fu-zheng YANG, Peng REN
doaj   +2 more sources

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