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We assess the accuracy of a smartphone camera simulation. The simulation is an end-to-end analysis that begins with a physical description of a high dynamic range 3D scene and includes a specification of the optics and the image sensor. The…

Image and Video Processing · Electrical Eng. & Systems 2022-01-31 Zheng Lyu , Thomas Goossens , Brian Wandell , Joyce Farrell

Custom and natural lighting conditions can be emulated in images of the scene during post-editing. Extraordinary capabilities of the deep learning framework can be utilized for such purpose. Deep image relighting allows automatic photo…

Computer Vision and Pattern Recognition · Computer Science 2021-06-17 Sourya Dipta Das , Nisarg A. Shah , Saikat Dutta , Himanshu Kumar

We propose a simple method for estimating noise level from a single color image. In most image-denoising algorithms, an accurate noise-level estimate results in good denoising performance; however, it is difficult to estimate noise level…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Akihiro Nakamura , Michihiro Kobayashi

Accurate depth estimation under adverse night conditions has practical impact and applications, such as on autonomous driving and rescue robots. In this work, we studied monocular depth estimation at night time in which various adverse…

Computer Vision and Pattern Recognition · Computer Science 2023-02-09 Peilun Shi , Jiachuan Peng , Jianing Qiu , Xinwei Ju , Frank Po Wen Lo , Benny Lo

Videos captured under low light conditions suffer from severe noise. A variety of efforts have been devoted to image/video noise suppression and made large progress. However, in extremely dark scenarios, extensive photon starvation would…

Image and Video Processing · Electrical Eng. & Systems 2023-02-16 Yuxiao Cheng , Runzhao Yang , Zhihong Zhang , Jinli Suo , Qionghai Dai

Depth cameras are utilized in many applications. Recently light field approaches are increasingly being used for depth computation. While these approaches demonstrate the technical feasibility, they can not be brought into real-world…

Computer Vision and Pattern Recognition · Computer Science 2019-07-26 Yuriy Anisimov , Oliver Wasenmüller , Didier Stricker

In this paper, we aim to solve the problem of consistent depth prediction in complex scenes under various illumination conditions. The existing indoor datasets based on RGB-D sensors or virtual rendering have two critical limitations -…

Computer Vision and Pattern Recognition · Computer Science 2021-12-16 Zitian Zhang , Chuhua Xian

Achieving high-fidelity, compact RGBD imaging presents a dual challenge: conventional compact optics struggle with RGB sharpness across the entire depth-of-field, while software-only Monocular Depth Estimation (MDE) is an ill-posed problem…

Computer Vision and Pattern Recognition · Computer Science 2025-10-30 Zongxi Yu , Xiaolong Qian , Shaohua Gao , Qi Jiang , Yao Gao , Kailun Yang , Kaiwei Wang

Imaging in low-light environments is challenging due to reduced scene radiance, which leads to elevated sensor noise and reduced color saturation. Most learning-based low-light enhancement methods rely on paired training data captured under…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Maria Pilligua , David Serrano-Lozano , Pai Peng , Ramon Baldrich , Michael S. Brown , Javier Vazquez-Corral

LiDAR (laser based radar) systems are a major part of many new real-world interactive systems, one of the most notable being autonomous cars. The current market LiDAR systems are limited by detector sensitivity: when output power is at…

Signal Processing · Electrical Eng. & Systems 2018-02-27 Yoni Sher , Lior Cohen , Daniel Istrati , Hagai S. Eisenberg

Technological development aims to produce generations of increasingly efficient robots able to perform complex tasks. This requires considerable efforts, from the scientific community, to find new algorithms that solve computer vision…

Computer Vision and Pattern Recognition · Computer Science 2018-09-06 Mirco Planamente , Mohammad Reza Loghmani , Barbara Caputo

Modern high-definition LIDAR is expensive for commercial autonomous driving vehicles and small indoor robots. An affordable solution to this problem is fusion of planar LIDAR with RGB images to provide a similar level of perception…

Computer Vision and Pattern Recognition · Computer Science 2020-09-07 Chen Fu , Chiyu Dong , Christoph Mertz , John M. Dolan

Because of the diversity in lighting environments, existing illumination estimation techniques have been designed explicitly on indoor or outdoor environments. Methods have focused specifically on capturing accurate energy (e.g., through…

Computer Vision and Pattern Recognition · Computer Science 2023-08-23 Mohammad Reza Karimi Dastjerdi , Jonathan Eisenmann , Yannick Hold-Geoffroy , Jean-François Lalonde

In the rapidly advancing domain of computer vision, accurately estimating the poses of multiple individuals from various viewpoints remains a significant challenge, especially when reliability is a key requirement. This paper introduces a…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Daniel Bermuth , Alexander Poeppel , Wolfgang Reif

Previous image based relighting methods require capturing multiple images to acquire high frequency lighting effect under different lighting conditions, which needs nontrivial effort and may be unrealistic in certain practical use…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Di Qiu , Jin Zeng , Zhanghan Ke , Wenxiu Sun , Chengxi Yang

Lighting design in indoor environments is of primary importance for at least two reasons: 1) people should perceive an adequate light; 2) an effective lighting design means consistent energy saving. We present the Invisible Light Switch…

Computer Vision and Pattern Recognition · Computer Science 2019-01-31 Theodore Tsesmelis , Irtiza Hasan , Marco Cristani , Alessio Del Bue , Fabio Galasso

We present a method to estimate the direction and color of the scene light source from a single image. Our method is based on two main ideas: (a) we use a new synthetic dataset with strong shadow effects with similar constraints to the SID…

Computer Vision and Pattern Recognition · Computer Science 2020-09-21 Hassan A. Sial , Ramon Baldrich , Maria Vanrell , Dimitris Samaras

A new application for real-time monitoring of the lack of movement in older adults' own homes is proposed, aiming to support people's lives and independence in their later years. A lightweight camera monitoring system, based on an RGB-D…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Chen Long-fei , Robert B. Fisher

Event cameras are bio-inspired sensors providing significant advantages over standard cameras such as low latency, high temporal resolution, and high dynamic range. We propose a novel structured-light system using an event camera to tackle…

Computer Vision and Pattern Recognition · Computer Science 2022-07-08 Manasi Muglikar , Guillermo Gallego , Davide Scaramuzza

We describe a new method for comparing frame appearance in a frame-to-model 3-D mapping and tracking system using an low dynamic range (LDR) RGB-D camera which is robust to brightness changes caused by auto exposure. It is based on a…

Computer Vision and Pattern Recognition · Computer Science 2016-04-05 Shuda Li , Ankur Handa , Yang Zhang , Andrew Calway