Results 11 to 20 of about 463,548 (246)

Dynamic Range Compression Self-Adaption Method for SAR Image Based on Deep Learning

Remote Sensing, 2022
The visualization of synthetic aperture radar (SAR) images involves the mapping of high dynamic range (HDR) amplitude values to gray levels for lower dynamic range (LDR) display devices. This dynamic range compression process determines the visibility of
Hao Shi, Qingqing Sheng, Yupei Wang, Bingying Yue, Liang Chen   +4 more
doaj   +1 more source

An Anomalous Noise Events Detector for Dynamic Road Traffic Noise Mapping in Real-Life Urban and Suburban Environments

Sensors, 2017
One of the main aspects affecting the quality of life of people living in urban and suburban areas is their continued exposure to high Road Traffic Noise (RTN) levels.
Joan Claudi Socoró, Francesc Alías, Rosa Ma Alsina-Pagès   +2 more
doaj   +1 more source

Advanced Noise Indicator Mapping Relying on a City Microphone Network

Sensors, 2023
In this work, a methodology is presented for city-wide road traffic noise indicator mapping. The need for direct access to traffic data is bypassed by relying on street categorization and a city microphone network.
Timothy Van Renterghem, Valentin Le Bescond, Luc Dekoninck, Dick Botteldooren   +3 more
doaj   +1 more source

Improved method for SNR prediction in machine-learning-based test [PDF]

, 2010
This paper applies an improved method for testing the signal-to-noise ratio (SNR) of Analogue-to-Digital Converters (ADC). In previous work, a noisy and nonlinear pulse signal is exploited as the input stimulus to obtain the signature results of ADC.
Kerkhoff, Hans G., Sheng, Xiaoqin
core   +2 more sources

Detection of Anomalous Noise Events on Low-Capacity Acoustic Nodes for Dynamic Road Traffic Noise Mapping within an Hybrid WASN

Sensors, 2018
One of the main aspects affecting the quality of life of people living in urban and suburban areas is the continuous exposure to high road traffic noise (RTN) levels.
Rosa Ma Alsina-Pagès, Francesc Alías, Joan Claudi Socoró, Ferran Orga   +3 more
doaj   +1 more source

A WASN-Based Suburban Dataset for Anomalous Noise Event Detection on Dynamic Road-Traffic Noise Mapping

Sensors, 2019
Traffic noise is presently considered one of the main pollutants in urban and suburban areas. Several recent technological advances have allowed a step forward in the dynamic computation of road-traffic noise levels by means of a Wireless Acoustic Sensor
Rosa Ma Alsina-Pagès, Ferran Orga, Francesc Alías, Joan Claudi Socoró   +3 more
doaj   +1 more source

Forecasting Urban Rail Transit Vehicle Interior Noise and Its Applications in Railway Alignment Design

Journal of Advanced Transportation, 2020
In this study, a data-driven interior noise prediction model is developed for vehicles on an urban rail transit system based on random forest (RF) and a vehicle/track coupling dynamic model (VTCDM). The proposed prediction model can evaluate and optimize
Yifeng Wang, Ping Wang, Zihan Li, Zhengxing Chen, Qing He   +4 more
doaj   +1 more source

Video enhancement using adaptive spatio-temporal connective filter and piecewise mapping [PDF]

, 2008
This paper presents a novel video enhancement system based on an adaptive spatio-temporal connective (ASTC) noise filter and an adaptive piecewise mapping function (APMF).
A Polesel, C Tomasi, D Barash, D-C Chang, E Abreu, EP Bennett, EP Bennett, EW Dijkstra, F Durand, G Pok, G Zhu, J Portilla, JC Brailean, JJ Francis, JK Aggarwal, K Jostschulte, KH Goh, M Bister, MB Alp, P Perona, R Garnett, R van den Boomgaard, RC Gonzalez, RC Hardie, S Jackson, S Peng, S Roth, S Schulte, SH Lee, V Kober, W-Y Han, Z Chen   +31 more
core   +4 more sources

DYNAMAP – Development of low cost sensors networks for real time noise mapping

Noise Mapping, 2016
The Environmental Noise Directive (END) requires that regular updating of noise maps is implemented every five years to check and report about the changes occurred during the reference period. The updating process is usually achieved using a standardized
Sevillano Xavier, Socoró Joan Claudi, Alías Francesc, Bellucci Patrizia, Peruzzi Laura, Radaelli Simone, Coppi Paola, Nencini Luca, Cerniglia Andrea, Bisceglie Alessandro, Benocci Roberto, Zambon Giovanni   +11 more
doaj   +1 more source

Uncertain Flow Visualization using LIC [PDF]

, 2009
In this paper we look at the Line Integral Convolution method for flow visualization and ways in which this can be applied to the visualization of two dimensional, steady flow fields in the presence of uncertainty. To achieve this, we start by studying
Allendes Osorio, RS, Brodlie, KW
core   +1 more source