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Roni Sengupta

8 accepted papers

2025

NFL-BA: Near-Field Light Bundle Adjustment for SLAM in Dynamic Lighting

NeurIPS 2025poster

Simultaneous Localization and Mapping (SLAM) systems typically assume static, distant illumination; however, many real-world scenarios, such as endoscopy, subterranean robotics, and search & rescue in collapsed environments, require agents to operate with a co-located light and camera in the absence…

Cited by 0SourceScholar
2025

ScribbleLight: Single Image Indoor Relighting with Scribbles

CVPR 2025poster

Image-based relighting of indoor rooms creates an immersive virtual understanding of the space, which is useful for interior design, virtual staging, and real estate. Relighting indoor rooms from a single image is especially challenging due to complex illumination interactions between multiple light…

Cited by 2SourcePDFScholar
2024

Leveraging Near-Field Lighting for Monocular Depth Estimation from Endoscopy Videos

ECCV 2024poster

"Monocular depth estimation in endoscopy videos can enable assistive and robotic surgery to obtain better coverage of the organ and detection of various health issues. Despite promising progress on mainstream, natural image depth estimation, techniques perform poorly on endoscopy images due to a lac…

2024

NePhi: Neural Deformation Fields for Approximately Diffeomorphic Medical Image Registration

ECCV 2024poster

"This work proposes NePhi, a generalizable neural deformation model which results in approximately diffeomorphic transformations. In contrast to the predominant voxel-based transformation fields used in learning-based registration approaches, NePhi represents deformations functionally, leading to gr…

2024

Universal Guidance for Diffusion Models

ICLR 2024poster

Typical diffusion models are trained to accept a particular form of conditioning, most commonly text, and cannot be conditioned on other modalities without retraining. In this work, we propose a universal guidance algorithm that enables diffusion models to be controlled by arbitrary guidance modalit…

2023

rPPG-Toolbox: Deep Remote PPG Toolbox

NeurIPS 2023poster

Camera-based physiological measurement is a fast growing field of computer vision. Remote photoplethysmography (rPPG) utilizes imaging devices (e.g., cameras) to measure the peripheral blood volume pulse (BVP) via photoplethysmography, and enables cardiac measurement via webcams and smartphones. How…