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Enhanced Signal Area Estimation Based on Edge Detection and Flood Fill

Mohammed M. Alammar, Miguel Lopez-Benitez
2022 IEEE Access  
INDEX TERMS Signal area estimation, spectrum awareness, image processing, edge detection, flood fill.  ...  In this context, this work proposes a novel approach for SAE based on the use of two well-known techniques from the field of image processing, namely edge detection and flood fill.  ...  SAs) and flood fill (to fill the area inside the estimated edges).  ... 
doi:10.1109/access.2022.3170901 fatcat:3s4c5gkdf5fthiwfexslnfbrxq

Identification of Inundation Using Low-Resolution Images from Traffic-Monitoring Cameras: Bayes Shrink and Bayesian Segmentation

Yin Chao Wu, Seong Jin Noh, Suyun Ham
2020 Water  
By using the principle of the image processing presented in this paper, we can estimate the inundation from images and assess flooding risks in the vicinity of local flooding locations.  ...  This new observation with improved accuracy will enhance our understanding of dynamic urban flooding by filling an information gap in the locations where conventional observations have limitations.  ...  There are different types of observations to monitor and detect floods in urban areas.  ... 
doi:10.3390/w12061725 fatcat:3iex27xadbghblz757gdfg6b6y

Mapping Paddy Rice with Sentinel-1/2 and Phenology-, Object-Based Algorithm—A Implementation in Hangjiahu Plain in China Using GEE Platform

Wu Xiao, Suchen Xu, Tingting He
2021 Remote Sensing  
using the PhenoRice algorithm; and (3) the identification of rice objects based on flood signal detection from time-series microwave and optical signals of the Sentinel-1/2.  ...  Rice maps produced using low spatial resolution data cannot well delineate the detailed distribution of rice, while pixel-based mapping using medium and high resolutions has significant salt-and-pepper  ...  The performance of the PODS algorithm depends on three modules: object extraction, transplanting date estimation, and flood signal detection.  ... 
doi:10.3390/rs13050990 doaj:6147475a38ae4f928c206ba9c8bf035a fatcat:2yernd4l5vfhxg7ic3r7sqjhga

Stereo Vision Auto-Alignment And The Unsupervised Search For Objects Of Interest With Depth Estimation

Ling-Wei Lee, Faeznor Diana binti Zainordin
2013 ECMS 2013 Proceedings edited by: Webjorn Rekdalsbakken, Robin T. Bye, Houxiang Zhang  
Objects are then identified in these selected areas with their estimated depth calculated based on the disparities between the stereo images.  ...  Based on the understanding that different objects or regions are focused at different focal points, alignment between the two images is carried out to determine areas of high overlapping similarities.  ...  (a) Flood-fill of the background. (b) Flood-fill of the object. Alignment at offset 230.  ... 
doi:10.7148/2013-0817 dblp:conf/ecms/LeeZ13 fatcat:raxp32rzkndujf4kir3vl2ezqq

Random Forest Classification of Inundation Following Hurricane Florence (2018) via L-Band Synthetic Aperture Radar and Ancillary Datasets

Alexander M. Melancon, Andrew L. Molthan, Robert E. Griffin, John R. Mecikalski, Lori A. Schultz, Jordan R. Bell
2021 Remote Sensing  
Fuzzy logic operations using hydrologic variables are used to reduce the number of small noise-like features and false detections in areas unlikely to retain water.  ...  Following postclassification refinement, estimated flood extents were combined to an event maximum for societal impact assessments.  ...  This dataset enables the estimation of flooding impacts on roadways, which is evaluated based on the location and extent of affected thoroughfares.  ... 
doi:10.3390/rs13245098 fatcat:ekxu3lniijg3dldtifnznkxglm

Correction to: Ground penetrating radar use in flood prevention

Sylwia Tomecka-Suchoń
2019 Acta Geophysica  
The main goal of the work is to create an automatic method of locating weak zones within flood embankments structure based on ground penetrating radar (GPR) measurements.  ...  The presented analyses were carried out on GPR data obtained for the flood banks of the Rudawa river (Kraków, Poland) in the area of their visible degradation.  ...  The paper was presented at the CAGG 2019 Conference "Challenges in Applied Geology and Geophysics" organized at the AGH University of Science and Technology, Krakow, Poland, 10-13 September 2019.  ... 
doi:10.1007/s11600-019-00371-6 fatcat:f33xeaia7fcdrcr5ru2w7u7jze

Integrating potential fields with remote sensing data for geological investigations in the Eljufra area of Libya

Nureddin Mohamed Saadi, Koichiro Watanabe, Akira Imai, Hakim Saibi
2008 Earth, Planets and Space  
A comparison of gravity and magnetic data provided information on hydrothermally altered basalt and sediment density. An anticlinal structure was detected in the western part of the study area.  ...  An analytic signal method was applied to the aeromagnetic data to estimate locations and the minimum depths to the contact.  ...  Hirofumi Muraoka and an anonymous reviewer for revision and their useful comments which improved the paper. Dr. Akira Takada is thanked for editorial efforts. Dr.  ... 
doi:10.1186/bf03353116 fatcat:5f5cmm4x7ve5tkagtkbcz5e2ye

Ldr2Hdr

Allan G. Rempel, Matthew Trentacoste, Helge Seetzen, H. David Young, Wolfgang Heidrich, Lorne Whitehead, Greg Ward
2007 ACM Transactions on Graphics  
The method can be implemented on both graphics hardware and on signal processors that are directly integrated in the HDR displays.  ...  Our emphasis is on real-time processing of video streams, such as web streams or the signal from a DVD player.  ...  This work was supported by an NSERC Special Opportunities Grant and an NSERC/MITACS Industrial Postgraduate Scholarship held by the first author.  ... 
doi:10.1145/1276377.1276426 fatcat:xhq6fku7i5gbdkyzfoassalhlq

Ldr2Hdr

Allan G. Rempel, Matthew Trentacoste
2007 ACM Transactions on Graphics  
The method can be implemented on both graphics hardware and on signal processors that are directly integrated in the HDR displays.  ...  Our emphasis is on real-time processing of video streams, such as web streams or the signal from a DVD player.  ...  This work was supported by an NSERC Special Opportunities Grant and an NSERC/MITACS Industrial Postgraduate Scholarship held by the first author.  ... 
doi:10.1145/1239451.1239490 fatcat:5tpqk2swqrbjtcw7vv3zfq4vpy

Ldr2Hdr

Allan G. Rempel, Matthew Trentacoste, Helge Seetzen, H. David Young, Wolfgang Heidrich, Lorne Whitehead, Greg Ward
2007 ACM SIGGRAPH 2007 papers on - SIGGRAPH '07  
The method can be implemented on both graphics hardware and on signal processors that are directly integrated in the HDR displays.  ...  Our emphasis is on real-time processing of video streams, such as web streams or the signal from a DVD player.  ...  This work was supported by an NSERC Special Opportunities Grant and an NSERC/MITACS Industrial Postgraduate Scholarship held by the first author.  ... 
doi:10.1145/1275808.1276426 fatcat:xlxadggdknbedc7vj3y5ux3rwy

Assessing L-Band GNSS-Reflectometry and Imaging Radar for Detecting Sub-Canopy Inundation Dynamics in a Tropical Wetlands Complex

Katherine Jensen, Kyle McDonald, Erika Podest, Nereida Rodriguez-Alvarez, Viviana Horna, Nicholas Steiner
2018 Remote Sensing  
with estimated flooded area percentages determined from SAR, with SNR exhibiting the strongest association.  ...  Three derivatives of CYGNSS Delay-Doppler maps (1) peak signal-to-noise ratio (SNR), (2) leading edge slope, and (3) trailing edge slope, demonstrated statistically significant logarithmic relationships  ...  The authors thank JAXA and Ake Rosenqvist for providing access to the multi-temporal ALOS2 PALSAR-2 ScanSAR mosaics.  ... 
doi:10.3390/rs10091431 fatcat:vjzdfacysfeyvbabmxzzuk3rsu

Lipid droplet quantification based on iterative image processing

Tarik Exner, Carlo A. Beretta, Qi Gao, Cassian Afting, Ines Romero-Brey, Ralf Bartenschlager, Leonard Fehring, Margarete Poppelreuther, Joachim Fuellekrug
2019 Journal of Lipid Research  
LD identification is based on their circular edges and central fluorescence intensity maxima. Adaptation to different cell types is mediated by a set of interactive parameters.  ...  Here, we present an ImageJ-based approach for the detection and quantification of LDs stained by neutral lipid dyes in images acquired by conventional wide-field fluorescence microscopy.  ...  ACKNOWLEDGEMENTS We would also like to thank Simone Sander and Juan Liao who tested early versions of the script.  ... 
doi:10.1194/jlr.d092841 pmid:30926625 pmcid:PMC6602134 fatcat:722sr5f2dzhb3gibg2hdmwplvq

The Artificial Intelligence of Things Sensing System of Real-Time Bridge Scour Monitoring for Early Warning during Floods

Yung-Bin Lin, Fong-Zuo Lee, Kuo-Chun Chang, Jihn-Sung Lai, Shi-Wei Lo, Jyh-Horng Wu, Tzu-Kang Lin
2021 Sensors  
Floods and torrential rains erode riverbeds and damage cross-river structures, causing bridge collapse and a severe threat to property and life.  ...  These vibration-based micro-electro-mechanical systems (MEMS) sensors are packaged in a waterproof stainless steel ball within a rebar cage to resist a harsh environment in floods.  ...  Acknowledgments: The authors acknowledge the Directorate General of Highways, Ministry of Transportation and Communications, and the National Applied Research Laboratories, Taiwan, for the valuable data  ... 
doi:10.3390/s21144942 fatcat:p5chlezknzcv5d273v3z2fvpbu

Ground penetrating radar use in flood prevention

Sylwia Tomecka-Suchoń
2019 Acta Geophysica  
The main goal of the work is to create an automatic method of locating weak zones within flood embankments structure based on ground penetrating radar (GPR) measurements.  ...  The presented analyses were carried out on GPR data obtained for the flood banks of the Rudawa River (Kraków, Poland) in the area of their visible degradation.  ...  Until now, the course of the Rudawa River bed could be determined based on descriptions or based on old photographs (Fig. 1b ).  ... 
doi:10.1007/s11600-019-00353-8 fatcat:wzb4bfi74bfulcturetcn5a3em

Automating the processing of cDNA microarray images

P. Liatsis, M.A. Nazarboland, J.Y. Goulermas, X.J. Zeng, E. Milonidis
2008 International Journal of Intelligent Systems Technologies and Applications  
Canny Edge Detection Canny proposed an optimal approach to edge detection (Canny 1983 ), (Canny, 1986) , based on three criteria.  ...  The HT requires that the edge elements are first enhanced/detected and then the edge map image is thresholded.  ...  However, this area is larger in the output results found by ImaGene.  ... 
doi:10.1504/ijista.2008.018170 fatcat:b52xa25at5gzdfuvtmxmklyfxm
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