Search Results for author: Mohit Gupta

Found 24 papers, 3 papers with code

Inertial Safety from Structured Light

no code implementations ECCV 2020 Sizhuo Ma, Mohit Gupta

We present inertial safety maps (ISM), a novel scene representation designed for fast detection of obstacles in scenarios involving camera or scene motion, such as robot navigation and human-robot interaction.

Robot Navigation

Single-Photon Structured Light

no code implementations CVPR 2022 Varun Sundar, Sizhuo Ma, Aswin C. Sankaranarayanan, Mohit Gupta

We present a novel structured light technique that uses Single Photon Avalanche Diode (SPAD) arrays to enable 3D scanning at high-frame rates and low-light levels.

Banana Sub-Family Classification and Quality Prediction using Computer Vision

no code implementations6 Apr 2022 Narayana Darapaneni, Arjun Tanndalam, Mohit Gupta, Neeta Taneja, Prabu Purushothaman, Swati Eswar, Anwesh Reddy Paduri, Thangaselvi Arichandrapandian

India is the second largest producer of fruits and vegetables in the world, and one of the largest consumers of fruits like Banana, Papaya and Mangoes through retail and ecommerce giants like BigBasket, Grofers and Amazon Fresh.

Data Augmentation Image Classification +1

Compressive Single-Photon 3D Cameras

no code implementations CVPR 2022 Felipe Gutierrez-Barragan, Atul Ingle, Trevor Seets, Mohit Gupta, Andreas Velten

CSPHs are a per-pixel compressive representation of the high-resolution histogram, that is built on-the-fly, as each photon is detected.

Event Neural Networks

no code implementations2 Dec 2021 Matthew Dutson, Mohit Gupta

Video data is often repetitive; for example, the content of adjacent frames is usually strongly correlated.

Image Enhancement object-detection +2

Photon-Starved Scene Inference using Single Photon Cameras

1 code implementation ICCV 2021 Bhavya Goyal, Mohit Gupta

The key idea is that having a spectrum of different brightness levels during training enables effective guidance, and increases robustness to shot noise even in extreme noise cases.

Image Classification Monocular Depth Estimation +1

Blocks-World Cameras

no code implementations CVPR 2021 Jongho Lee, Mohit Gupta

For several vision and robotics applications, 3D geometry of man-made environments such as indoor scenes can be represented with a small number of dominant planes.

Music Generation using Three-layered LSTM

no code implementations19 May 2021 Vaishali Ingale, Anush Mohan, Divit Adlakha, Krishan Kumar, Mohit Gupta

This paper explores the idea of utilising Long Short-Term Memory neural networks (LSTMNN) for the generation of musical sequences in ABC notation.

Music Generation

Passive Inter-Photon Imaging

no code implementations CVPR 2021 Atul Ingle, Trevor Seets, Mauro Buttafava, Shantanu Gupta, Alberto Tosi, Mohit Gupta, Andreas Velten

Digital camera pixels measure image intensities by converting incident light energy into an analog electrical current, and then digitizing it into a fixed-width binary representation.

iToF2dToF: A Robust and Flexible Representation for Data-Driven Time-of-Flight Imaging

no code implementations12 Mar 2021 Felipe Gutierrez-Barragan, Huaijin Chen, Mohit Gupta, Andreas Velten, Jinwei Gu

Recently, data-driven methods that jointly denoise and mitigate MPI have become state-of-the-art without using the intermediate transient representation.

Denoising

Invisible Perturbations: Physical Adversarial Examples Exploiting the Rolling Shutter Effect

1 code implementation CVPR 2021 Athena Sayles, Ashish Hooda, Mohit Gupta, Rahul Chatterjee, Earlence Fernandes

By contrast, we contribute a procedure to generate, for the first time, physical adversarial examples that are invisible to human eyes.

Quanta Burst Photography

no code implementations21 Jun 2020 Sizhuo Ma, Shantanu Gupta, Arin C. Ulku, Claudio Bruschini, Edoardo Charbon, Mohit Gupta

These single-photon cameras (SPCs) are capable of capturing high-speed sequences of binary single-photon images with no read noise.

Asynchronous Single-Photon 3D Imaging

no code implementations ICCV 2019 Anant Gupta, Atul Ingle, Mohit Gupta

Single-photon avalanche diodes (SPADs) are becoming popular in time-of-flight depth-ranging due to their unique ability to capture individual photons with picosecond timing resolution.

Differential Scene Flow from Light Field Gradients

no code implementations26 Jul 2019 Sizhuo Ma, Brandon M. Smith, Mohit Gupta

The key enabling result is a per-ray linear equation, called the ray flow equation, that relates 3D scene flow to 4D light field gradients.

Optical Flow Estimation

Photon-Flooded Single-Photon 3D Cameras

no code implementations CVPR 2019 Anant Gupta, Atul Ingle, Andreas Velten, Mohit Gupta

Single photon avalanche diodes (SPADs) are starting to play a pivotal role in the development of photon-efficient, long-range LiDAR systems.

High Flux Passive Imaging with Single-Photon Sensors

no code implementations CVPR 2019 Atul Ingle, Andreas Velten, Mohit Gupta

Our key observation is that the precise inter-photon timing measured by a SPAD can be used for estimating scene brightness under ambient lighting conditions, even for very bright scenes.

A Geometric Perspective on Structured Light Coding

no code implementations ECCV 2018 Mohit Gupta, Nikhil Nakhate

We present a mathematical framework for analysis and design of high performance structured light (SL) coding schemes.

3D Scene Flow from 4D Light Field Gradients

no code implementations ECCV 2018 Sizhuo Ma, Brandon M. Smith, Mohit Gupta

The key enabling result is a per-ray linear equation, called the ray flow equation, that relates 3D scene flow to 4D light field gradients.

Optical Flow Estimation

Trapping Light for Time of Flight

no code implementations CVPR 2018 Ruilin Xu, Mohit Gupta, Shree K. Nayar

We propose a novel imaging method for near-complete, surround, 3D reconstruction of geometrically complex objects, in a single shot.

3D Reconstruction

Tracking Multiple Objects Outside the Line of Sight Using Speckle Imaging

no code implementations CVPR 2018 Brandon M. Smith, Matthew O'Toole, Mohit Gupta

However, when imaging multiple NLOS objects, the speckle components due to different objects are superimposed on the virtual bare sensor image, and cannot be analyzed separately for recovering the motion of individual objects.

Motion Estimation

SpeDo: 6 DOF Ego-Motion Sensor Using Speckle Defocus Imaging

no code implementations ICCV 2015 Kensei Jo, Mohit Gupta, Shree K. Nayar

We develop a theoretical model for speckle flow (motion of speckle as a function of sensor motion), and show that it is quasi-invariant to surrounding scene's properties.

Motion Estimation Optical Flow Estimation

LiSens --- A Scalable Architecture for Video Compressive Sensing

1 code implementation14 Mar 2015 Jian Wang, Mohit Gupta, Aswin C. Sankaranarayanan

The measurement rate of cameras that take spatially multiplexed measurements by using spatial light modulators (SLM) is often limited by the switching speed of the SLMs.

Compressive Sensing Video Compressive Sensing

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