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We use a contrastive self-supervised learning framework to estimate distances to galaxies from their photometric images. We incorporate data augmentations from computer vision as well as an application-specific augmentation accounting for…

天体物理仪器与方法 · 物理学 2021-01-13 Md Abul Hayat , Peter Harrington , George Stein , Zarija Lukić , Mustafa Mustafa

Deep learning applications on LiDAR data suffer from a strong domain gap when applied to different sensors or tasks. In order for these methods to obtain similar accuracy on different data in comparison to values reported on public…

计算机视觉与模式识别 · 计算机科学 2023-09-13 Laurenz Reichardt , Nikolas Ebert , Oliver Wasenmüller

Large aperture ground based solar telescopes allow the solar atmosphere to be resolved in unprecedented detail. However, observations are limited by Earths turbulent atmosphere, requiring post image corrections. Current reconstruction…

太阳与恒星天体物理 · 物理学 2025-06-06 Christoph Schirninger , Robert Jarolim , Astrid M. Veronig , Christoph Kuckein

We propose a new deep learning-based method for estimating the occupancy of vegetation strata from airborne 3D LiDAR point clouds. Our model predicts rasterized occupancy maps for three vegetation strata corresponding to lower, medium, and…

计算机视觉与模式识别 · 计算机科学 2022-01-21 Ekaterina Kalinicheva , Loic Landrieu , Clément Mallet , Nesrine Chehata

In nighttime circumstances, it is challenging for individuals and machines to perceive their surroundings. While prevailing image restoration methods adeptly handle singular forms of degradation, they falter when confronted with intricate…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Yifan Chen , Fei Yin , Chunle Guo , Chongyi Li , Yujiu Yang

Monocular depth estimation involves predicting depth from a single RGB image and plays a crucial role in applications such as autonomous driving, robotic navigation, 3D reconstruction, etc. Recent advancements in learning-based methods have…

计算机视觉与模式识别 · 计算机科学 2025-02-05 Jingming Xia , Guanqun Cao , Guang Ma , Yiben Luo , Qinzhao Li , John Oyekan

This paper describes a physics-based end-to-end software simulation for image systems. We use the software to explore sensors designed to enhance performance in high dynamic range (HDR) environments, such as driving through daytime tunnels…

计算机视觉与模式识别 · 计算机科学 2024-08-23 Zhenyi Liu , Devesh Shah , Brian Wandell

In contrast to the current literature, we address the problem of estimating the spectrum from a single common trichromatic RGB image obtained under unconstrained settings (e.g. unknown camera parameters, unknown scene radiance, unknown…

计算机视觉与模式识别 · 计算机科学 2018-12-04 Berk Kaya , Yigit Baran Can , Radu Timofte

Depth estimation is a fundamental issue in 4-D light field processing and analysis. Although recent supervised learning-based light field depth estimation methods have significantly improved the accuracy and efficiency of traditional…

计算机视觉与模式识别 · 计算机科学 2022-03-23 Jing Jin , Junhui Hou

Empowered by deep learning, recent methods for material capture can estimate a spatially-varying reflectance from a single photograph. Such lightweight capture is in stark contrast with the tens or hundreds of pictures required by…

图形学 · 计算机科学 2019-06-28 Valentin Deschaintre , Miika Aittala , Fredo Durand , George Drettakis , Adrien Bousseau

For monitoring the night sky conditions, wide-angle all-sky cameras are used in most astronomical observatories to monitor the sky cloudiness. In this manuscript, we apply a deep-learning approach for automating the identification of…

天体物理仪器与方法 · 物理学 2025-03-25 Mohammad H. Zhoolideh Haghighi , Alireza Ghasrimanesh , Habib Khosroshahi

We present a novel deep learning framework that models the scene dependent image processing inside cameras. Often called as the radiometric calibration, the process of recovering RAW images from processed images (JPEG format in the sRGB…

计算机视觉与模式识别 · 计算机科学 2017-07-27 Seonghyeon Nam , Seon Joo Kim

LiDAR-based 3D object detection models have traditionally struggled under rainy conditions due to the degraded and noisy scanning signals. Previous research has attempted to address this by simulating the noise from rain to improve the…

计算机视觉与模式识别 · 计算机科学 2024-02-29 Xun Huang , Hai Wu , Xin Li , Xiaoliang Fan , Chenglu Wen , Cheng Wang

This work addresses the problem of camera elevation estimation from a single photograph in an outdoor environment. We introduce a new benchmark dataset of one-hundred thousand images with annotated camera elevation called Alps100K. We…

计算机视觉与模式识别 · 计算机科学 2016-07-13 Martin Cadik , Jan Vasicek , Michal Hradis , Filip Radenovic , Ondrej Chum

We describe a system that builds a high dynamic-range and wide-angle image of the night sky by combining a large set of input images. The method makes use of pixel-rank information in the individual input images to improve a "consensus"…

计算机视觉与模式识别 · 计算机科学 2014-06-09 Dustin Lang , David W. Hogg , Bernhard Scholkopf

Removing camera motion blur from a single light field is a challenging task since it is highly ill-posed inverse problem. The problem becomes even worse when blur kernel varies spatially due to scene depth variation and high-order camera…

计算机视觉与模式识别 · 计算机科学 2018-06-15 Dongwoo Lee , Haesol Park , In Kyu Park , Kyoung Mu Lee

All existing image enhancement methods, such as HDR tone mapping, cannot recover A/D quantization losses due to insufficient or excessive lighting, (underflow and overflow problems). The loss of image details due to A/D quantization is…

计算机视觉与模式识别 · 计算机科学 2018-03-22 Chang Liu , Xiaolin Wu , Xiao Shu

Estimating and modelling the appearance of an object under outdoor illumination conditions is a complex process. Although there have been several studies on illumination estimation and relighting, very few of them focus on estimating the…

计算机视觉与模式识别 · 计算机科学 2021-05-17 Farhan Rahman Wasee , Alen Joy , Charalambos Poullis

Light field data has been demonstrated to facilitate the depth estimation task. Most learning-based methods estimate the depth infor-mation from EPI or sub-aperture images, while less methods pay attention to the focal stack. Existing…

计算机视觉与模式识别 · 计算机科学 2021-04-14 Yongri Piao , Xinxin Ji , Miao Zhang , Yukun Zhang

Gated cameras hold promise as an alternative to scanning LiDAR sensors with high-resolution 3D depth that is robust to back-scatter in fog, snow, and rain. Instead of sequentially scanning a scene and directly recording depth via the photon…

计算机视觉与模式识别 · 计算机科学 2021-12-07 Amanpreet Walia , Stefanie Walz , Mario Bijelic , Fahim Mannan , Frank Julca-Aguilar , Michael Langer , Werner Ritter , Felix Heide