Soumyadip (Roni) Sengupta

MVPSNet: Fast Generalizable Multi-view Photometric Stereo
Dongxu Zhao, Daniel Lichy, Pierre-Nicolas Perrin, Jan-Michael Frahm, Soumyadip Sengupta
[Paper (Coming Soon)]

We propose generalized approach to multi-view photometric stereo that is significantly better than only multi-view stereo. It produces same reconstruction quality while being 400x faster than per-scene optimization techniques.

Motion Matters: Neural Motion Transfer for Better Camera Physiological Sensing
Akshay Paruchuri, Xin Liu, Yulu Pan, Shwetak Patel, Daniel McDuff*, Soumyadip Sengupta*
arXiv 2023
[Paper][Project Page][Code]

Neural Motion Transfer serves as an effective data augmentation technique for PPG signal estimation from facial videos. We devise the best strategy to augment publicly available datasets with motion augmentation, improving up to 75% over SOTA techniques on five benchmark datasets.

Universal Guidance for Diffusion Models
Arpit Bansal, Hong-Min Chu, Avi Schwarzschild, Soumyadip Sengupta, Micah Goldblum, Jonas Geiping, Tom Goldstein
arXiv 2023
[Paper][Project Page + Code]

Enables controlling diffusion models by arbitrary guidance modalities without the need to retrain any use-specific components.

A Surface-normal Based Neural Framework for Colonoscopy Reconstruction
Shuxian Wang, Yubo Zhang, Sarah K McGill, Julian G Rosenman, Jan-Michael Frahm, Soumyadip Sengupta, Stephen M Pizer
International Conference on Image Processing and Machine Intelligence (IPMI 2023)
[Paper]

Using SLAM + near-field Photometric Stereo for 3D colon reconstruction from colonoscopy videos.

Towards Unified Keyframe Propagation Models
Patrick Esser, Peter Michael, Soumyadip Sengupta
(CVPRW 2022 - AI for Content Creation Workshop)
[Paper][Project Page][Code]

We present a two-stream approach for video in-painting, where high-frequency features interact locally and low-frequency features interact globally via attention mechanism.

Real-Time Light-Weight Near-Field Photometric Stereo
Daniel Lichy, Soumyadip Sengupta, David Jacobs
(CVPR 2022)
[Paper][Project Page][Code]

Near-field Photometric Stereo technique is useful for 3D imaging of large objects. We capture multiple images of an object by moving a flashlight and reconstruct the 3D mesh. Our method is significnatly faster and memory-efficient while producing better quality than SOTA methods.

Robust High-Resolution Video Matting with Temporal Guidance
Peter Lin, Linjie Yang, Imran Saleemi, Soumyadip Sengupta
(WACV 2022)
[Paper][Project Page][Code]

Background Removal a.k.a Alpha matting on videos by exploiting temporal information with a recurrent architecture. Does not require capturing background image or manual annotations.

A Light Stage on Every Desk
Soumyadip Sengupta, Brian Curless, Ira Kemelmacher-Shlizerman, Steve Seitz
(ICCV 2021)
[Paper][Project Page]

We learn a personalized relighting model by capturing a person watching YouTube videos. Potential application includes relighting during a zoom call.

Shape and Material Capture at Home
Daniel Lichy, Jiaye Wu, Soumyadip Sengupta, David Jacobs
(CVPR 2021)
[Paper][Project Page][Code]

High-quality Photometric Stereo can be achieved with a simple flashlight. Recovers hi-res geometry and reflectance by progressively refining the predictions at each scale, conditioned on the prediction at previous scale.

Real-Time High Resolution Background Matting
Peter Lin*, Andrey Ryabtsev*, Soumyadip Sengupta, Brian Curless, Steve Seitz, Ira Kemelmacher-Shlizerman
(CVPR 2021 ORAL)(Best Paper Candidate 32/1600+ accepted papers)(Best Student Paper Honorable Mentions)
[Paper][Project Page][Code]

Background replacement at 30fps on 4K and 60fps on HD. Alpha matte is first extracted at low-res and then selectively refined with patches.

Lifespan Age Transformation Synthesis
Roy Or-El, Soumyadip Sengupta, Ohad Fried, Eli Shechtman, Ira Kemelmacher-Shlizerman
(ECCV 2020)
[Paper][Project Page][Code]

Age transformation from 0-70. Continuous aging is modeled by assuming 10 anchor age classes with interpolation in the latent space between them.

Background Matting: The World is Your Green Screen
Soumyadip Sengupta, Vivek Jayaram, Brian Curless, Steve Seitz, Ira Kemelmacher-Shlizerman
(CVPR 2020)
[Paper][Project Page][Code][Two Minute Papers Video][Microsoft AI using our code][CEO of Microsoft Satya Nadella talks about our work]

By simply capturing an additional image of the background, alpha matte can be extracted easily without requiring extensive human annotation in form of trimap.

Neural Inverse Rendering of an Indoor Scene from a Single Image
Soumyadip Sengupta, Jinwei Gu, Kihwan Kim, Guilin Liu, David Jacobs, Jan Kautz
(ICCV 2019)
[Paper][Project Page]

Self-supervision on real data is achieved with a Residual Appearnace Renderer network. It can cast shadows, add inter-reflections and near-field lighting, given the normal and albedo of the scene.

SfSNet : Learning Shape, Reflectance and Illuminance of Faces in the Wild
Soumyadip Sengupta, Angjoo Kanazawa, Carlos D. Castillo, David Jacobs.
CVPR 2018 [Spotlight].
[Paper] [Project Page / Code][Download PyTorch Code]

Decomposes an unconstrained human face into surface normal, albedo and spherical harmonics lighting. Learns from synthetic 3DMM followed by self-supervised finetuning on unlabelled real images.

Introduces SfSMesh that utilizes the surface normal predicted by SfSNet to reconstruct a 3D face mesh.

A New Rank Constraint on Multi-view Fundamental Matrices, and its Application to Camera Location Recovery
Soumyadip Sengupta, Tal Amir, Meirav Galun, Amit Singer, Tom Goldstein, David Jacobs, Ronen Basri.
CVPR 2017 [Spotlight].
[Paper] [Code]

We prove that a matrix formed by stacking fundamental matrices between pairs of images has rank 6. We then introduce a non-linear optimization algorithm based on ADMM, that can better estimate the camera parameters using this rank constraint. This improves Structure-from-Motion algorithms which require initial camera estimation (bundle adjustment).

Solving Uncalibrated Photometric Stereo Using Fewer Images by Jointly Optimizing Low-rank Matrix Completion and Integrability
Soumyadip Sengupta, Hao Zhou, Walter Forkel, Ronen Basri, Tom Goldstein, David Jacobs.
Journal of Mathematical Imaging and Vision (JMIV), 2018.
[Paper]

We solve uncalibrated Photometric Stereo using as few as 4-6 images as a rank-constrained non-linear optimization with ADMM.

Frontal to Profile Face Verification in the Wild
Soumyadip Sengupta, Jun-Cheng Chen, Carlos D. Castillo, Vishal M. Patel, Rama Chellappa, David Jacobs.
WACV 2016.
[Project Page] , [Paper]

We introduce a dataset of frontal vs profile face verfication in the wild -- CFP. We show that SOTA face verification algorithms degrade about 10% on frontal-profile verification compared to frontal-frontal. Our dataset has been widely used to improve face verification across poses, but also for face warping and pose synthesis with GAN.

A Frequency Domain Approach to Silhouette Based Gait Recognition
Soumyadip Sengupta, Udit Halder, Rameshwar Panda, Ananda S Chowdhury.
NCVPRIPG 2013.
[Paper]