Publications

Lisa K. Fischer, Mykhailo Riabets, Daniel Rueckert, Benedikt Wiestler, Anke Meyer-Baese, Sandeep Nagar (2026). MRIComp4Flow: Compression of 3D Brain MRI for Training Multi-Modal Generative Models. Simulation and Synthesis in Medical Imaging (SASHIMI), MICCAI 2026 Workshop.

Valentin Biller, Niklas Bubeck, Lucas Zimmer, Ayhan Can Erdur, Sandeep Nagar, Anke Meyer-Baese, Daniel Rückert, Benedikt Wiestler, Jonas Weidner (2026). TumorFlow: Physics-Guided Longitudinal MRI Synthesis of Glioblastoma Growth. 29th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI 2026).

Sandeep Nagar (2025). Fast & Efficient Normalizing Flows and Applications of Image Generative Models. PhD thesis, International Institute of Information Technology, Hyderabad.

Valentin Biller, Lucas Zimmer, Ayhan Can Erdur, Sandeep Nagar, Daniel Rückert, Niklas Bubeck, Jonas Weidner (2025). A Biophysically-Conditioned Generative Framework for 3D Brain Tumor MRI Synthesis. BraTS-Lighthouse Challenge, 28th International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI 2025).

Anuj Kumar Ray, Sandeep Nagar, Girish Varma, U. Deva Priyakumar, Ankan Paul (2025). Leveraging high-spin DFT features for prediction of spin state gaps in 3d transition metal complexes. Physical Chemistry Chemical Physics.

Sandeep Nagar, Siya Puttagunta, Girish Varma (2025). Private IDD: Data Anonymization in the Indian Driving Dataset using Inpainting. In preparation.

Sandeep Nagar, Girish Varma (2025). Inverse-Flow: Parallel Backpropagation for Inverse of a Convolution with Application to Normalizing Flows. The 28th International Conference on Artificial Intelligence and Statistics (AISTATS 2025).

Sandeep Nagar, Mustafa Alam, Mark Hasegawa-Johnson, David G. Beiser, Narendra Ahuja (2024). R2I-rPPG: A Robust Region of Interest Selection Method for Remote Photoplethysmography to Extract Heart Rate. arXiv preprint.

Furqan Ahmed Shaik, Sandeep Nagar, Aiswarya Maturi, Harshit Kumar Sankhla, Dibyendu Ghosh, Anshuman Majumdar, Srikanth Vidapanakal, Kunal Chaudhary, Sunny Manchanda, Girish Varma (2024). ICPR 2024 Competition on Safe Segmentation of Drive Scenes in Unstructured Traffic and Adverse Weather Conditions. 27th International Conference on Pattern Recognition (ICPR 2024).

Sandeep Nagar, Ehsan Farahbakhsh, Joseph Awange, Rohitash Chandra (2024). Remote Sensing Framework for Geological Mapping via Stacked Autoencoders and Clustering. Advances in Space Research.

Sandeep Nagar, Girish Varma (2024). Inverse of Convolution for Sparse Blind Deconvolution. In preparation.

Sandeep Nagar, Sathya Veera Reddy Dendi, Pravin Nair, Raj Narayana Gadde (2024). Affine-StableSR: Coupling Layer-based Lightweight Autoencoder and Stable Diffusion Model for Image Super-Resolution. Under review.

Sandeep Nagar, Abhinaba Bala, Sai Amrit Patnaik (2023). Adaptation of the Super Resolution SOTA for Art Restoration in Camera Capture Images. 2023 International Conference on Emerging Techniques in Computational Intelligence (IEEE ICETCI).

Varun Gupta, Sandeep Nagar, Suman Paul Choudhury, Rohit Singh, Anandita Jamwal, Vibhu Gupta, Anbumani Subramanian, C.V. Jawahar, Rohit Saluja (2023). C4MTS: Challenge on Categorizing Missing Traffic Signs from Contextual Cues. National Conference on Computer Vision, Pattern Recognition, Image Processing, and Graphics (NCVPRIPG 2023).

Aditya Kallappa, Sandeep Nagar, Girish Varma (2023). FInC Flow: Fast and Invertible k × k Convolutions for Normalizing Flows. 18th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISIGRAPP 2023) – VISAPP.

Sandeep Nagar, Mustafa Alam, M. Chatterjee, K. Patel, S. Khosla, J. Harvill, Mark Hasegawa-Johnson, David Chestek, Narendra Ahuja, David G. Beiser (2022). Remote Heart Rate Estimation From Videos for Minority Populations in Emergency Department. Illinois College of Emergency Physicians Spring Symposium 2022.

K. Patel, Mustafa Alam, M. Chatterjee, Sandeep Nagar, S. Khosla, J. Harvill, Mark Hasegawa-Johnson, David Chestek, Narendra Ahuja, David G. Beiser (2022). Respiratory Rate Estimation from Audio Signals from a Public Sound Database. Illinois College of Emergency Physicians Spring Symposium 2022.

Mustafa Alam, M. Chatterjee, K. Patel, Sandeep Nagar, S. Khosla, J. Harvill, Mark Hasegawa-Johnson, David Chestek, Narendra Ahuja, David G. Beiser (2022). Respiratory Rate Estimation From Videos for Minority Populations in Emergency Department. Illinois College of Emergency Physicians Spring Symposium 2022.

Sandeep Nagar, Prateek Pani, Raj Nair, Girish Varma (2021). Automated Seed Quality Testing System using GAN and Active Learning. 9th International Conference on Pattern Recognition and Machine Intelligence (PReMI 2021).

Sandeep Nagar, Marius Dufraisse, Girish Varma (2021). CInC Flow: Characterizable Invertible 3×3 Convolution. 4th Workshop on Tractable Probabilistic Modeling, Conference on Uncertainty in Artificial Intelligence (UAI 2021).