Search Results for author: Ioannis Gkioulekas

Found 11 papers, 1 papers with code

Objects as volumes: A stochastic geometry view of opaque solids

no code implementations24 Dec 2023 Bailey Miller, HanYu Chen, Alice Lai, Ioannis Gkioulekas

Starting from a stochastic representation of opaque solids as random indicator functions, we prove the conditions under which such solids can be modeled using exponential volumetric transport.

3D Reconstruction

NOVA: NOvel View Augmentation for Neural Composition of Dynamic Objects

1 code implementation24 Aug 2023 Dakshit Agrawal, Jiajie Xu, Siva Karthik Mustikovela, Ioannis Gkioulekas, Ashish Shrivastava, Yuning Chai

We propose a novel-view augmentation (NOVA) strategy to train NeRFs for photo-realistic 3D composition of dynamic objects in a static scene.

Optical Flow Estimation

Neural Kaleidoscopic Space Sculpting

no code implementations CVPR 2023 Byeongjoo Ahn, Michael De Zeeuw, Ioannis Gkioulekas, Aswin C. Sankaranarayanan

Full-surround 3D reconstruction is critical for many applications, such as augmented and virtual reality.

3D Reconstruction

Megahertz Light Steering Without Moving Parts

no code implementations CVPR 2023 Adithya Pediredla, Srinivasa G. Narasimhan, Maysamreza Chamanzar, Ioannis Gkioulekas

We introduce a light steering technology that operates at megahertz frequencies, has no moving parts, and costs less than a hundred dollars.

Passive Micron-scale Time-of-Flight with Sunlight Interferometry

no code implementations CVPR 2023 Alankar Kotwal, Anat Levin, Ioannis Gkioulekas

We introduce an interferometric technique for passive time-of-flight imaging and depth sensing at micrometer axial resolutions.

Neural Implicit Surface Reconstruction using Imaging Sonar

no code implementations17 Sep 2022 Mohamad Qadri, Michael Kaess, Ioannis Gkioulekas

We present a technique for dense 3D reconstruction of objects using an imaging sonar, also known as forward-looking sonar (FLS).

3D Reconstruction Surface Reconstruction

Swept-Angle Synthetic Wavelength Interferometry

no code implementations CVPR 2023 Alankar Kotwal, Anat Levin, Ioannis Gkioulekas

As in conventional synthetic wavelength interferometry, our technique uses light consisting of two narrowly-separated optical wavelengths, resulting in per-pixel interferometric measurements whose phase encodes scene depth.

Defocus Map Estimation and Deblurring from a Single Dual-Pixel Image

no code implementations ICCV 2021 Shumian Xin, Neal Wadhwa, Tianfan Xue, Jonathan T. Barron, Pratul P. Srinivasan, Jiawen Chen, Ioannis Gkioulekas, Rahul Garg

We use data captured with a consumer smartphone camera to demonstrate that, after a one-time calibration step, our approach improves upon prior works for both defocus map estimation and blur removal, despite being entirely unsupervised.

Deblurring

Inverse Transport Networks

no code implementations28 Sep 2018 Chengqian Che, Fujun Luan, Shuang Zhao, Kavita Bala, Ioannis Gkioulekas

We introduce inverse transport networks as a learning architecture for inverse rendering problems where, given input image measurements, we seek to infer physical scene parameters such as shape, material, and illumination.

Inverse Rendering

On the Appearance of Translucent Edges

no code implementations CVPR 2015 Ioannis Gkioulekas, Bruce Walter, Edward H. Adelson, Kavita Bala, Todd Zickler

We also discuss the existence of shape and material metamers, or combinations of distinct shape or material parameters that generate the same edge profile.

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