Results 21 to 30 of about 556,599 (292)

A novel video noise reduction method based on PDE, adaptive grouping, and thresholding techniques

open access: yesThe Journal of Engineering, 2021
Undoubtedly, video block‐matching and 3D filtering (VBM3D) has achieved a significant improvement in video denoising. Nevertheless, in practice, failure to distinguish between the different noise areas, ignoring noise variances and pixel intensity, false‐
Ali Abdullah Yahya, Jieqing Tan, Min Hu
doaj   +1 more source

Associations of noise kurtosis, genetic variations in NOX3 and lifestyle factors with noise-induced hearing loss

open access: yesEnvironmental Health, 2020
Background Noise-induced hearing loss (NIHL) is a complex disease caused by environmental and genetic risk factors. This study was to explore the association of noise kurtosis, triphosphopyridine nucleotide oxidase 3 (NOX3) and lifestyles with NIHL ...
Tianyu Zhao   +8 more
doaj   +1 more source

Using Noise Level to Detect Frame Repetition Forgery in Video Frame Rate Up-Conversion

open access: yesFuture Internet, 2018
Frame repetition (FR) is a common temporal-domain tampering operator, which is often used to increase the frame rate of video sequences. Existing methods detect FR forgery by analyzing residual variation or similarity between video frames; however, these
Yanli Li, Lala Mei, Ran Li, Changan Wu
doaj   +1 more source

Introduction to Random Signals and Noise [PDF]

open access: yes, 2006
Random signals and noise are present in many engineering systems and networks. Signal processing techniques allow engineers to distinguish between useful signals in audio, video or communication equipment, and interference, which disturbs the desired ...
Etten, Wim van
core   +4 more sources

Correlation Noise Estimation in Distributed Video Coding [PDF]

open access: yes, 2011
Video compression is achieved by exploiting spatial and temporal correlations in the frame sequence. A frame is typically predicted by the encoder from previously coded information (such as blocks and/or frames), and the residual between the frame and its prediction is entropy coded.
Slowack, Jürgen   +6 more
openaire   +4 more sources

Spatiotemporal super-resolution for low bitrate H.264 video [PDF]

open access: yes, 2010
Super-resolution and frame interpolation enhance low resolution low-framerate videos. Such techniques are especially important for limited bandwidth communications. This paper proposes a novel technique to up-scale videos compressed with H.264 at low bit-
Anantrasirichai, N, Canagarajah, CN
core   +2 more sources

Visual Speech Enhancement

open access: yes, 2018
When video is shot in noisy environment, the voice of a speaker seen in the video can be enhanced using the visible mouth movements, reducing background noise.
Gabbay, Aviv   +2 more
core   +1 more source

Video Denoising and Enhancement via Dynamic Video Layering

open access: yes, 2017
Video denoising refers to the problem of removing "noise" from a video sequence. Here the term "noise" is used in a broad sense to refer to any corruption or outlier or interference that is not the quantity of interest.
Guo, Han, Vaswani, Namrata
core   +1 more source

A Framework For TV Logos Learning Using Linear Inverse Diffusion Filters For Noise Removal [PDF]

open access: yes, 2013
Different logotypes represent significant cues for video annotations. A combination of temporal and spatial segmentation methods can be used for logo extraction from various video contents.
Gonzalez-Linares, Jose Maria   +5 more
core   +1 more source

ELIMINATION OF WHITE NOISE FROM VIDEO SIGNALS OF TELEVISION TRANSMISSION BY USING DIGITAL RECURSIVE ESTIMATION

open access: yesElectrica, 2002
During the transmission of television signals, because of several sources of electromagnetic noises, video signals are corrupted with white gaussian noise.
Mehmet ENGIN   +2 more
doaj   +2 more sources

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