Bharathkumar Ramachandra

Works (7)

Updated: July 5th, 2023 15:33

2021 article

Local Clustering with Mean Teacher for Semi-supervised learning

Chen, Z., Dutton, B., Ramachandra, B., Wu, T., & Vatsavai, R. R. (2021, January 10). 2020 25TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION (ICPR).

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

topics (OpenAlex): Machine Learning and Data Classification; Domain Adaptation and Few-Shot Learning; Anomaly Detection Techniques and Applications
TL;DR: This work proposes a simple yet effective method called Local Clustering (LC) to mitigate the effect of confirmation bias in the Mean Teacher model and demonstrates on semi-supervised benchmark datasets SVHN and CIFAR-10 that adding the LC loss to MT yields significant improvements compared to MT and performance comparable to the state of the art in semi- supervised learning. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
4. Quality Education (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 30, 2021

2021 article

Perceptual metric learning for video anomaly detection

Ramachandra, B., Jones, M., & Vatsavai, R. R. (2021, March 22). Machine Vision and Applications, Vol. 32.

By: B. Ramachandra n, M. Jones * & R. Vatsavai n 

author keywords: Video anomaly detection; Metric learning; Video surveillance; Siamese neural networks
topics (OpenAlex): Anomaly Detection Techniques and Applications; Artificial Immune Systems Applications; Data-Driven Disease Surveillance
TL;DR: This work introduces a new approach to localize anomalies in surveillance video using a Siamese convolutional neural network to learn a metric between a pair of video patches, which is used to measure the perceptual distance between each video patch in the testing video and the video patches found in normal training video. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 5, 2021

2020 article

A Survey of Single-Scene Video Anomaly Detection

Ramachandra, B., Jones, M., & Vatsavai, R. R. (2020, January 1). IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 5.

By: B. Ramachandra n, M. Jones* & R. Vatsavai n 

author keywords: Anomaly detection; Computational modeling; Cameras; Training; Buildings; Legged locomotion; Feeds; Video anomaly detection; abnormal event detection; surveillance
MeSH headings : Algorithms
topics (OpenAlex): Anomaly Detection Techniques and Applications; Video Surveillance and Tracking Methods; Artificial Immune Systems Applications; Human Pose and Action Recognition; Video Analysis and Summarization
TL;DR: This article summarizes research trends on the topic of anomaly detection in video feeds of a single scene and categorizes and situates past research into an intuitive taxonomy, and provides a comprehensive comparison of the accuracy of many algorithms on standard test sets. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: May 23, 2022

2018 article

Anomalous cluster detection in spatiotemporal meteorological fields

Ramachandra, B., Dutton, B., & Vatsavai, R. R. (2018, December 26). Statistical Analysis and Data Mining The ASA Data Science Journal, Vol. 12, pp. 88–100.

By: B. Ramachandra n, B. Dutton n & R. Vatsavai n 

author keywords: anomaly detection; clustering; spatiotemporal data mining
topics (OpenAlex): Anomaly Detection Techniques and Applications; Hydrology and Drought Analysis; Data-Driven Disease Surveillance
TL;DR: This paper develops a method for extreme event detection in meteorological datasets that follows from well known distribution‐based anomaly detection approaches and generalizes the Mahalanobis distance across distributions of different dimensionalities. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 9, 2019

2018 article

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

Ramachandra, B., Nawathe, P., Monroe, J., Han, K., Ham, Y., & Vatsavai, R. R. (2018, June 13). Journal of Infrastructure Systems, Vol. 24.

By: B. Ramachandra n, P. Nawathe n, J. Monroe  n, K. Han n , Y. Ham * & R. Vatsavai n 

topics (OpenAlex): 3D Surveying and Cultural Heritage; Thermography and Photoacoustic Techniques; Infrared Target Detection Methodologies
TL;DR: Leveraging thermography for managing built environments has become prevalent as a robust tool for detecting, analyzing, and reporting their performance in a nondestructive manner. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 19, 2018

2017 article

Hierarchical change detection framework for biomass monitoring

Chen, Z., Ramachandra, B., & Vatsavai, R. R. (2017, July 1). 2017 Ieee International Geoscience and Remote Sensing Symposium (Igarss), pp. 620–623.

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

topics (OpenAlex): Remote Sensing in Agriculture; Remote-Sensing Image Classification; Remote Sensing and Land Use
TL;DR: A nearest neighbor based hierarchical change detection methodology for analyzing multi-temporal remote sensing imagery and shows that K-Means over-detects changes in comparison to the proposed method. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2016 article

Scalable nearest neighbor based hierarchical change detection framework for crop monitoring

Chen, Z., Vatsavai, R. R., Ramachandra, B., Zhang, Q., Singh, N., & Sukumar, S. (2016, December 1). 2016 IEEE International Conference on Big Data (Big Data), pp. 1309–1314.

By: Z. Chen n, R. Vatsavai n , B. Ramachandra n, Q. Zhang n, N. Singh* & S. Sukumar *

topics (OpenAlex): Remote Sensing in Agriculture; Remote-Sensing Image Classification; Remote Sensing and Land Use
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
13. Climate Action (OpenAlex)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

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