Journal Publications:
S L Happy, A. Dantcheva, and F. Bremond, "Expression recognition with deep features extracted from holistic and part-based models," Image and Vision Computing, vol. 105, 2021.
Abhijit Das, Xuesong Niu, Antitza Dantcheva, S L Happy, Hu Han, Radia Zeghari, Philippe Robert, Shiguang Shan, Francois Bremond, and Xilin Chen "A Spatio-temporal Approach for Apathy Classification," IEEE Transactions on Circuits and Systems for Video Technology, 2021.
O Tasar, S L Happy, Y Tarabalka, P Alliez, "Colormapgan: Unsupervised domain adaptation for semantic segmentation using color mapping generative adversarial networks," IEEE Transactions on Geoscience and Remote Sensing, 2020.
S L Happy, A. Dantcheva, F. Bremond, "A Weakly Supervised Learning Technique for Classifying Facial Expressions," Pattern Recognition Letters, 2019. (https://authors.elsevier.com/a/1Zj0IcAmybgkX)
R. Mohanty, S L Happy, and A. Routray, “A Semi-supervised Spatial Spectral Regularized Manifold Local Scaling Cut with HGF for Dimensionality Reduction of Hyperspectral Images," IEEE Transactions on Geoscience and Remote Sensing (TGRS), vol. 57, no. 6, pp. 3423-3435, 2019. [pdf]
S L Happy and A. Routray, “Fuzzy Histogram of Optical Flow Orientations for Micro-expression Recognition,” IEEE Transactions on Affective Computing, vol. 10, no. 3, pp. 394 - 406, 2019. [pdf, MATLAB Code]
R. Mohanty, S L Happy, and A. Routray, “Spatial-Spectral Regularized Local Scaling Cut for Dimensionality Reduction in Hyperspectral Image Classification,” IEEE Geoscience and Remote Sensing Letters (GRSL), vol. 16, no. 6, pp. 932 - 936, 2019. [pdf]
R. Mohanty, S L Happy, and A. Routray, “A Supervised Geometry-Aware Mapping Approach for Classification of Hyperspectral Images,” IEEE Geoscience and Remote Sensing Letters (GRSL), vol. 15, no. 4, pp. 582- 586, 2018. [pdf]
S L Happy, P. Patnaik, A. Routray, and R. Guha, “The Indian Spontaneous Expression Database for Emotion Recognition,” in IEEE Transactions on Affective Computing, vol. 8, no. 1, pp. 131-142, 2017. [pdf, download database]
S L Happy, and A. Routray, “Automatic Facial Expression Recognition Using Features of Salient Facial Patches,” in IEEE Transactions on Affective Computing, vol. 6, no. 1, pp. 1-12, 2015. [pdf]
A. Dasgupta, A. George, S L Happy, and A. Routray, “A Vision-Based System for Monitoring the Loss of Attention in Automotive Drivers”, in IEEE Transactions on Intelligent Transportation Systems, vol. 14, no. 4, pp.1825-1838, 2013. [pdf]
A. Dasgupta, A. George, S L Happy, A. Routray, and T. Shanker “An onboard Vision Based System for Drowsiness Detection in Automotive Drivers,” in International Journal of Advances in Engineering Sciences and Applied Mathematics, vol. 5, no. 2-3, pp. 94-103, 2013. [pdf]
Book Chapters:
Chaki, Soumi, S. L. Happy, Aurobinda Routray, and William K. Mohanty. "A modified guided filter to denoise seismic attributes." Handbook of Petroleum Geoscience: Exploration, Characterization, and Exploitation of Hydrocarbon Reservoirs , 2022, pp. 50-65.
S L Happy and A. Routray, "Recognizing Subtle Micro-Facial Expressions using Fuzzy Histogram of Optical Flow Orientations and Feature Selection Methods," Computational Intelligence for Pattern Recognition," Springer-Verlag, 2018, pp. 341-368. [pdf]
Conference Proceedings:
M. Balazia, S L Happy, F. Bremond, and A. Dantcheva, "How Unique is a Face: An Investigative Study," in International Conference on Pattern Recognition (ICPR), 2020.
S L Happy, A. Dantcheva, and F. Bremond, "Semi-Supervised Emotion Recognition using Inconsistently Annotated Data," in IEEE International Conference on Automatic Face & Gesture Recognition, 2020 (FG-20), pp. 477-484. [pdf]
S L Happy, A. Dantcheva, A. Das, F. Bremond, R. Zeghari, and P. Robert, "Apathy Classification by Exploiting Task Relatedness," in IEEE International Conference on Automatic Face & Gesture Recognition, 2020 (FG-20), pp. 733-738 . [pdf]
S L Happy, A. Dantcheva, and A. Routray, "Dual-threshold Based Local Patch Construction Method for Manifold Approximation and Its Application to Facial Expression Analysis," in European Signal Processing Conf. (EUSIPCO), 2019.
S L Happy, A. Dantcheva, A. Das, R. Zeghari, P. Robert, and F. Bremond, "Characterizing the State of Apathy with Facial Expression and Motion Analysis," in IEEE International Conference on Automatic Face & Gesture Recognition, 2019 (FG-19). [pdf]
S. Nayak, S L Happy, A. Routray, M. Sarma, "A Versatile Online System for Person-specific Facial Expression Recognition," in TENCON, 2019, pp. 2513-2518.
R. Mohanty, S L Happy, N. Suthar, and A. Routray, "A Trace Lasso Regularized L1-norm Graph Cut for Highly Correlated Noisy Hyperspectral Image," in European Signal Processing Conf. (EUSIPCO), 2018. [pdf, poster]
S L Happy, R. Mohanty, and A. Routray, "An effective feature selection method based on pair-wise feature proximity for high dimensional low sample size data," in European Signal Processing Conf. (EUSIPCO), pp. 1574-1578, 2017. [pdf, MATLAB code, slides]
R. Mohanty, S L Happy, and A. Routray, "Graph Scaling Cut with L1-Norm for Classification of Hyperspectral Images," in European Signal Processing Conf. (EUSIPCO), pp. 793-797, 2017. [pdf, poster]
P. Kumar, S L Happy, S. Chatterjee, D. Sheet, and A. Routray, "An Unsupervised Approach for Overlapping Cervical Cell Cytoplasm Segmentation," in IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES), pp. 106-109, 2016. [pdf, slides] [best paper award]
P. Kumar, S L Happy, and A. Routray, "A Real-time Robust Facial Expression Recognition System using HOG Features," in IEEE International Conference on Computing, Analytics and Security Trends, pp. 289-293, 2016. [pdf]
S L Happy and A. Routray, "Robust Facial Expression Classification Using Shape and Appearance Features," in Proceedings of 8th International Conference of Advances in Pattern Recognition (ICAPR), 2015. [pdf, slides]
I. Mandal, S L Happy, D. P. Behera and A. Routray, "A framework for human activity recognition based on accelerometer data," In IEEE 5th International Conference - Confluence The Next Generation Information Technology Summit, 2014, pp. 600-603. [pdf]
N. Bajaj, S L Happy, and A. Routray, "Dynamic Model of Facial Expression Recognition based on Eigen-face Approach." in IEEE Proceedings of Green Energy and Systems Conference, 2013, November 25, Long Beach, CA, USA, arXiv preprint arXiv:1311.6007, 2013. [pdf]
S L Happy, A. Dasgupta, P. Patnaik, and A. Routray, “Automated Alertness and Emotion Detection for Empathic Feedback during E-Learning,” in IEEE International Conference on Technology for Education, Kharagpur, India, 2013. [pdf]
S L Happy, A. George, and A. Routray, “A real-time facial expression classification system using Local Binary Patterns,” in IEEE Proceedings of 4th International Conference on Intelligent Human Computer Interaction, Kharagpur, India, 2012. [pdf]
S L Happy, A. Dasgupta, A. George, and A. Routray, “A Video Database of Human Faces under Near Infra-Red Illumination for Human Computer Interaction Applications,” in IEEE Proceedings of 4th International Conference on Intelligent Human Computer Interaction, Kharagpur, India, 2012. [pdf, download database]
A. Routray, A. Dasgupta, A. George, S L Happy, and T. Shanker, “An On-board Embedded System for Monitoringthe Loss of Attention in Human Drivers,” National Conference on Urban Mobility – Challenges, Solutions and Prospects, Chennai, India, 2012. [pdf]
Patents Filed:
S L Happy, Amit Kumar, Himanshu Tiwari, Munish Rajora, Shameed Sait, Niranjan Damera, "Remote Agent Support", Application No. PCT/US20210/033748, 21 May 2021.
A. Routray, A. Dasgupta, A. George, and S L Happy, “A System for Real-Time Assessment of Alertness Level of Human Beings " : Indian Patent No.634/KOL/2013 A, 12 May 2014.