Search Results for author: Vijay Rengarajan

Found 7 papers, 0 papers with code

Learning Spatio-Temporal Downsampling for Effective Video Upscaling

no code implementations15 Mar 2022 Xiaoyu Xiang, Yapeng Tian, Vijay Rengarajan, Lucas Young, Bo Zhu, Rakesh Ranjan

Consequently, the inverse task of upscaling a low-resolution, low frame-rate video in space and time becomes a challenging ill-posed problem due to information loss and aliasing artifacts.

Quantization

Programmable Spectral Filter Arrays using Phase Spatial Light Modulator

no code implementations29 Sep 2021 Vishwanath Saragadam, Vijay Rengarajan, Ryuichi Tadano, Tuo Zhuang, Hideki Oyaizu, Jun Murayama, Aswin C. Sankaranarayanan

Spatially varying spectral modulation can be implemented using a liquid crystal spatial light modulator (SLM) since it provides an array of liquid crystal cells, each of which can be purposed to act as a programmable spectral filter array.

Material Classification

Photosequencing of Motion Blur using Short and Long Exposures

no code implementations11 Dec 2019 Vijay Rengarajan, Shuo Zhao, Ruiwen Zhen, John Glotzbach, Hamid Sheikh, Aswin C. Sankaranarayanan

Adopting a computational photography approach, we propose to capture two short exposure images, along with the original blurred long exposure image to aid in the aforementioned challenges.

Unrolling the Shutter: CNN to Correct Motion Distortions

no code implementations CVPR 2017 Vijay Rengarajan, Yogesh Balaji, A. N. Rajagopalan

Our single-image correction method fares well even operating in a frame-by-frame manner against video-based methods and performs better than scene-specific correction schemes even under challenging situations.

Rolling Shutter Correction

From Bows to Arrows: Rolling Shutter Rectification of Urban Scenes

no code implementations CVPR 2016 Vijay Rengarajan, Ambasamudram N. Rajagopalan, Rangarajan Aravind

The rule of perspectivity that 'straight-lines-must-remain-straight' is easily inflected in CMOS cameras by distortions introduced by motion.

Rolling Shutter Super-Resolution

no code implementations ICCV 2015 Abhijith Punnappurath, Vijay Rengarajan, A. N. Rajagopalan

But CMOS sensors that have increasingly started to replace their more expensive CCD counterparts in many applications do not respect this assumption if there is a motion of the camera relative to the scene during the exposure duration of an image because of the row-wise acquisition mechanism.

Image Super-Resolution

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