Ranga Raju Vatsavai

Also known as: Raju

https://orcid.org/0000-0002-7083-0267

Machine Learning, Data Mining, Spatial and Temporal, Remote Sensing, Image and Video Understanding, Computer Vision, Crop Biomass Monitoring, Settlement Mapping, HPC, Spatial Databases

Works (40)

Updated: July 8th, 2023 05:01

2023 journal article

Remote Sensing Based Crop Type Classification Via Deep Transfer Learning

IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 16, 4699โ€“4712.

By: K. Gadiraju n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Agriculture; crop classification; deep learning; remote sensing; transfer learning
Sources: Web Of Science, ORCID
Added: July 3, 2023

2022 journal article

A Survey of Single-Scene Video Anomaly Detection

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 44(5), 2293โ€“2312.

By: B. Ramachandra n, M. Jonesโ€‰* & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Anomaly detection; Computational modeling; Cameras; Training; Buildings; Legged locomotion; Feeds; Video anomaly detection; abnormal event detection; surveillance
MeSH headings : Algorithms
Sources: Web Of Science, ORCID
Added: May 23, 2022

2022 article

Deep Residual Network with Multi-Image Attention for Imputing Under Clouds in Satellite Imagery

2022 26TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION (ICPR), pp. 643โ€“649.

By: X. Yang nโ€‰, Y. Zhao n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Web Of Science, ORCID
Added: February 20, 2023

2022 article

Multi-stream Deep Residual Network for Cloud Imputation Using Multi-resolution Remote Sensing Imagery

2022 21ST IEEE INTERNATIONAL CONFERENCE ON MACHINE LEARNING AND APPLICATIONS, ICMLA, pp. 97โ€“104.

By: Y. Zhao n, X. Yang nโ€‰ & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Remote sensing; Cloud imputation; Benchmark; Multi-resolution; Deep learning
Sources: Web Of Science, ORCID
Added: June 5, 2023

2022 article

Persona-Based Conversational AI: State of the Art and Challenges

2022 IEEE INTERNATIONAL CONFERENCE ON DATA MINING WORKSHOPS, ICDMW, pp. 993โ€“1001.

By: J. Liu*, C. Symons & R. Vatsavai*โ€‰

Sources: Web Of Science, ORCID
Added: May 30, 2023

2022 article

Real-Time Change Detection At the Edge

2022 21ST IEEE INTERNATIONAL CONFERENCE ON MACHINE LEARNING AND APPLICATIONS, ICMLA, pp. 776โ€“781.

By: K. Gadiraju n, Z. Chenโ€‰*, B. Ramachandra & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: edge computing; Gaussian Mixture Models; change detection; precision agriculture; real time computing
Sources: Web Of Science, ORCID
Added: June 5, 2023

2021 article

A Scalable System for Searching Large-scale Multi-sensor Remote Sensing Image Collections

2021 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA), pp. 3780โ€“3783.

By: Y. Zhao n, X. Yang nโ€‰ & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: SpatioTemporal Asset Catalog (STAC); Spatiotemporal Indexing; Remote Sensing Data Discovery
Sources: Web Of Science, ORCID
Added: July 5, 2022

2021 article

Local Clustering with Mean Teacher for Semi-supervised learning

2020 25TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION (ICPR), pp. 6243โ€“6250.

By: Z. Chen n, B. Dutton n, B. Ramachandra n, T. Wu nโ€‰ & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Web Of Science, ORCID
Added: August 30, 2021

2021 journal article

Perceptual metric learning for video anomaly detection

MACHINE VISION AND APPLICATIONS, 32(3).

By: B. Ramachandra n, M. Jonesโ€‰* & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Video anomaly detection; Metric learning; Video surveillance; Siamese neural networks
Sources: Web Of Science, ORCID
Added: April 5, 2021

2019 journal article

Anomalous cluster detection in spatiotemporal meteorological fields

STATISTICAL ANALYSIS AND DATA MINING, 12(2), 88โ€“100.

By: B. Ramachandra n, B. Dutton n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: anomaly detection; clustering; spatiotemporal data mining
Sources: Web Of Science, ORCID
Added: April 9, 2019

2018 article

Deformable Part Models for Complex Object Detection in Remote Sensing Imagery

BIGSPATIAL 2018: PROCEEDINGS OF THE 7TH ACM SIGSPATIAL INTERNATIONAL WORKSHOP ON ANALYTICS FOR BIG GEOSPATIAL DATA (BIGSPATIAL-2018), pp. 57โ€“62.

By: N. Poolโ€‰ n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Deformable part models (DPMs); complex geospatial objects
Sources: Web Of Science, ORCID
Added: July 1, 2019

2018 article

FUTURES-DPE: Towards Dynamic Provisioning and Execution of Geosimulations in HPC environments

26TH ACM SIGSPATIAL INTERNATIONAL CONFERENCE ON ADVANCES IN GEOGRAPHIC INFORMATION SYSTEMS (ACM SIGSPATIAL GIS 2018), pp. 464โ€“467.

By: A. Shashidharan n, R. Vatsavai nโ€‰ & R. Meentemeyer nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Geosimulation; Distributed Computing; Computational Steering
Sources: Web Of Science, ORCID
Added: December 2, 2019

2018 article

Machine Learning Approaches for Slum Detection Using Very High Resolution Satellite Images

2018 18TH IEEE INTERNATIONAL CONFERENCE ON DATA MINING WORKSHOPS (ICDMW), pp. 1397โ€“1404.

By: K. Gadirajuโ€‰ n, R. Vatsavai nโ€‰, N. Kazaโ€‰*, E. Wibbels* & A. Krishna*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: remote-sensing; image-classification; informal-settlements
Sources: Web Of Science, ORCID
Added: June 17, 2019

2018 journal article

Real-Time Energy Audit of Built Environments: Simultaneous Localization and Thermal Mapping

JOURNAL OF INFRASTRUCTURE SYSTEMS, 24(3).

By: B. Ramachandra n, P. Nawathe n, J. Monroe n, K. Han nโ€‰, Y. Hamโ€‰* & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Web Of Science, ORCID
Added: October 19, 2018

2017 conference paper

Hierarchical change detection framework for biomass monitoring

2017 ieee international geoscience and remote sensing symposium (igarss), 620โ€“623.

By: Z. Chen n, B. Ramachandra n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2017 journal article

High performance GPU computing based approaches for oil spill detection from multi-temporal remote sensing data

REMOTE SENSING OF ENVIRONMENT, 202, 28โ€“44.

By: U. Bhangale*, S. Durbhaโ€‰*, R. King*, N. Younan* & R. Vatsavai nโ€‰

co-author countries: India ๐Ÿ‡ฎ๐Ÿ‡ณ United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: High performance computing (HPC); Graphics processing unit (GPU); Oil spill; Morphological attribute profiles
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 article

Parallel Processing over Spatial-Temporal Datasets from Geo, Bio, Climate and Social Science Communities: A Research Roadmap

2017 IEEE 6TH INTERNATIONAL CONGRESS ON BIG DATA (BIGDATA CONGRESS 2017), pp. 232โ€“250.

By: S. Prasadโ€‰*, D. Aghajarian*, M. McDermottโ€‰*, D. Shah*, M. Mokbelโ€‰*, S. Puri*, S. Rey*, S. Shekharโ€‰* ...

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: High performance computing; Spatial data mining; Remote sensing data; Medical images; Spatial econometrics; Map-reduce systems; CyberGIS; Parallel algorithms and data structures
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Semantics-Enabled Framework for Spatial Image Information Mining of Linked Earth Observation Data

IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, 10(1), 29โ€“44.

By: K. Kurte*, S. Durbhaโ€‰*, R. King*, N. Younan* & R. Vatsavai nโ€‰

co-author countries: India ๐Ÿ‡ฎ๐Ÿ‡ณ United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Description logic (DL); direction relations; image retrieval; linked data; reasoning; region connection calculus (RCC-8); resource description framework (RDF); semantic web rules language (SWRL); SPARQL; spatial image information mining (SIIM); spatial relations; topological relations; Web ontology language (OWL)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 conference paper

Semi-supervised deep generative models for change detection in very high resolution imagery

2017 ieee international geoscience and remote sensing symposium (igarss), 1063โ€“1066.

By: C. Connors n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2016 article

A Scalable Probabilistic Change Detection Algorithm for Very High Resolution (VHR) Satellite Imagery

2016 IEEE INTERNATIONAL CONGRESS ON BIG DATA - BIGDATA CONGRESS 2016, pp. 275โ€“282.

By: S. Hong n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Probabilistic Change Detection; Satellite Image Processing; Spatial Data Mining; OpenMP
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 journal article

Detecting Extreme Events in Gridded Climate Data

Procedia Computer Science, 80, 2397โ€“2401.

By: B. Ramachandra n, K. Gadirajuโ€‰ n, R. Vatsavai nโ€‰, D. Kaiser* & T. Karnowskiโ€‰*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: spatio-temporal; co-location; anomaly detection; trend analysis
Sources: Crossref, ORCID
Added: February 21, 2020

2016 article

Guest editorial: big spatial data

Vatsavai, R., & Chandola, V. (2016, October). GEOINFORMATICA, Vol. 20, pp. 797โ€“799.

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 journal article

Mapping Magnetic Ordering With Aberrated Electron Probes in STEM

Microscopy and Microanalysis, 22(S3), 1676โ€“1677.

By: J. Idroboโ€‰*, J. Ruszโ€‰*, J. Spiegelbergโ€‰*, M. McGuireโ€‰*, C. Symons*, R. Vatsavai*โ€‰, C. Cantoni*, A. Lupiniโ€‰*

co-author countries: Sweden ๐Ÿ‡ธ๐Ÿ‡ช United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Crossref, ORCID
Added: February 21, 2020

2016 journal article

Monitoring Land-Cover Changes A machine-learning perspective

IEEE GEOSCIENCE AND REMOTE SENSING MAGAZINE, 4(2), 8โ€“21.

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 conference paper

Scalable nearest neighbor based hierarchical change detection framework for crop monitoring

2016 IEEE International Conference on Big Data (Big Data), 1309โ€“1314.

By: Z. Chen n, R. Vatsavai nโ€‰, B. Ramachandra n, Q. Zhang n, N. Singhโ€‰* & S. Sukumar*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2016 journal article

Sliding Window-based Probabilistic Change Detection for Remote-sensed Images

Procedia Computer Science, 80, 2348โ€“2352.

By: S. Hongโ€‰ n & R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Probabilistic Change Detection; Satellite Image Processing; Spatial Data Mining; Sliding Window; GMM
Sources: Crossref, ORCID
Added: February 21, 2020

2016 article

pFUTURES: A Parallel Framework for Cellular Automaton Based Urban Growth Models

GEOGRAPHIC INFORMATION SCIENCE, (GISCIENCE 2016), Vol. 9927, pp. 163โ€“177.

By: A. Shashidharan n, D. Berkelโ€‰ n, R. Vatsavai nโ€‰ & R. Meentemeyer nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 article

A Scalable Complex Pattern Mining Framework for Global Settlement Mapping

2015 IEEE INTERNATIONAL CONGRESS ON BIG DATA - BIGDATA CONGRESS 2015, pp. 514โ€“521.

By: R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Very High-resolution Images; Multiple Instance Learning; Settlement Mapping; Complex Object Based Image Analysis
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 conference paper

Multitemporal data mining: From biomass monitoring to nuclear proliferation detection

2015 8th International Workshop on the Analysis of Multitemporal Remote Sensing Images (Multi-Temp).

By: R. Vatsavai nโ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2012 journal article

Probabilistic Change Detection Framework for Analyzing Settlement Dynamics Using Very High-resolution Satellite Imagery

Procedia Computer Science, 9, 907โ€“916.

By: R. Vatsavai*โ€‰ & J. Graesser*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Change Detection; pdf; Gaussian Distribution; Clustering
Sources: Crossref, ORCID
Added: September 10, 2020

2011 journal article

A hybrid classification scheme for mining multisource geospatial data

GeoInformatica, 15(1), 29โ€“47.

By: R. Vatsavai*โ€‰ & B. Bhaduriโ€‰*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: MLC; EM; Semi-supervised learning
Sources: Crossref, ORCID
Added: December 28, 2020

2011 journal article

A scalable gaussian process analysis algorithm for biomass monitoring

Statistical Analysis and Data Mining, 4(4), 430โ€“445.

By: V. Chandolaโ€‰* & R. Vatsavai*โ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Crossref, ORCID
Added: September 10, 2020

2011 journal article

Data Mining in Earth System Science (DMESS 2011)

Procedia Computer Science, 4, 1450โ€“1455.

By: F. Hoffmanโ€‰*, J. Larson*, R. Mills*, B. Brooks*, A. Gangulyโ€‰*, W. Hargrove*, J. Huangโ€‰*, J. Kumarโ€‰*, R. Vatsavai*โ€‰

co-author countries: Australia ๐Ÿ‡ฆ๐Ÿ‡บ United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Data mining; remote sensing; high performance computing; segmentation; change detection; synthesis; visualization
Sources: Crossref, ORCID
Added: September 10, 2020

2011 journal article

GX-Means: A model-based divide and merge algorithm for geospatial image clustering

Procedia Computer Science, 4, 186โ€“195.

By: R. Vatsavai*โ€‰, C. Symons*, V. Chandolaโ€‰* & G. Junโ€‰*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Clustering; EM; GMM; K-means; G-means; X-means
Sources: Crossref, ORCID
Added: September 10, 2020

2009 chapter

Incremental Clustering Algorithm for Earth Science Data Mining

In G. Allen, J. Nabrzyski, E. Seidel, G. D. van Albada, J. Dongarra, & P. M. A. Sloot (Eds.), Computational Science โ€“ ICCS 2009 (pp. 375โ€“384).

By: R. Vatsavai*โ€‰

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ

Ed(s): G. Allen, J. Nabrzyski, E. Seidel, G. van Albada, J. Dongarra & P. Sloot

Sources: Crossref, ORCID
Added: December 28, 2020

2008 chapter

A Learning Scheme for Recognizing Sub-classes from Model Trained on Aggregate Classes

In Lecture Notes in Computer Science (pp. 967โ€“976).

By: R. Vatsavai*โ€‰, S. Shekharโ€‰* & B. Bhaduriโ€‰*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Crossref, ORCID
Added: September 10, 2020

2007 journal article

An efficient spatial semi-supervised learning algorithm

International Journal of Parallel, Emergent and Distributed Systems, 22(6), 427โ€“437.

By: R. Vatsavai*โ€‰, S. Shekharโ€‰* & T. Burk*

co-author countries: India ๐Ÿ‡ฎ๐Ÿ‡ณ United States of America ๐Ÿ‡บ๐Ÿ‡ธ
author keywords: Semi-supervised learning; MLC; MAP; EM; Random fields; image analysis; 62M40; 68U10
Sources: Crossref, ORCID
Added: September 10, 2020

2006 chapter

Improving DB2 Performance Expert โ€“ A Generic Analysis Framework

In Lecture Notes in Computer Science (pp. 1097โ€“1101).

By: L. Mignet*, J. Basakโ€‰*, M. Bhide*, P. Royโ€‰*, S. Roy*, V. Sengar*, R. Vatsavai*โ€‰, M. Reichert* ...

co-author countries: Germany ๐Ÿ‡ฉ๐Ÿ‡ช India ๐Ÿ‡ฎ๐Ÿ‡ณ United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Crossref, ORCID
Added: September 10, 2020

2006 chapter

UMN-MapServer: A High-Performance, Interoperable, and Open Source Web Mapping and Geo-spatial Analysis System

In Geographic Information Science (pp. 400โ€“417).

By: R. Vatsavai*โ€‰, S. Shekharโ€‰*, T. Burk* & S. Lime*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Crossref, ORCID
Added: September 10, 2020

2004 chapter

Comparing Exact and Approximate Spatial Auto-regression Model Solutions for Spatial Data Analysis

In Geographic Information Science (pp. 140โ€“161).

By: B. Kazar*, S. Shekharโ€‰*, D. Lilja*, R. Vatsavai*โ€‰ & R. Pace*

co-author countries: United States of America ๐Ÿ‡บ๐Ÿ‡ธ
Sources: Crossref, ORCID
Added: September 10, 2020

Employment

Updated: November 15th, 2019 12:47

2014 - present

North Carolina State University Raleigh, North Carolina, US
Associate Professor Computer Science

Education

Updated: November 15th, 2019 12:49

1999 - 2008

University of Minnesota System Minneapolis, MN, US
Ph.D. Computer Science