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We introduce a model named DreamLight for universal image relighting in this work, which can seamlessly composite subjects into a new background while maintaining aesthetic uniformity in terms of lighting and color tone. The background can…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Yong Liu , Wenpeng Xiao , Qianqian Wang , Junlin Chen , Shiyin Wang , Yitong Wang , Xinglong Wu , Yansong Tang

Estimating a scene's lighting is a very important task when compositing synthetic content within real environments, with applications in mixed reality and post-production. In this work we present a data-driven model that estimates an HDR…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Vasileios Gkitsas , Nikolaos Zioulis , Federico Alvarez , Dimitrios Zarpalas , Petros Daras

This paper addresses the task of estimating the light arriving from all directions to a 3D point observed at a selected pixel in an RGB image. This task is challenging because it requires predicting a mapping from a partial scene…

Computer Vision and Pattern Recognition · Computer Science 2019-06-19 Shuran Song , Thomas Funkhouser

We develop an algorithm for single-image superresolution of remotely sensed data, based on the discrete shearlet transform. The shearlet transform extracts directional features of signals, and is known to provide near-optimally sparse…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Wojciech Czaja , James M. Murphy , Daniel Weinberg

Nighttime light (NTL) remote sensing observation serves as a unique proxy for quantitatively assessing progress toward meeting a series of Sustainable Development Goals (SDGs), such as poverty estimation, urban sustainable development, and…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Lixian Zhang , Runmin Dong , Shuai Yuan , Jinxiao Zhang , Mengxuan Chen , Juepeng Zheng , Haohuan Fu

Traffic signal control plays a crucial role in urban mobility. However, existing methods often struggle to generalize beyond their training environments to unseen scenarios with varying traffic dynamics. We present TransferLight, a novel…

Artificial Intelligence · Computer Science 2024-12-25 Johann Schmidt , Frank Dreyer , Sayed Abid Hashimi , Sebastian Stober

We propose a real-time method to estimate spatiallyvarying indoor lighting from a single RGB image. Given an image and a 2D location in that image, our CNN estimates a 5th order spherical harmonic representation of the lighting at the given…

Computer Vision and Pattern Recognition · Computer Science 2019-06-11 Mathieu Garon , Kalyan Sunkavalli , Sunil Hadap , Nathan Carr , Jean-François Lalonde

Precomputed Radiance Transfer (PRT) remains an attractive solution for real-time rendering of complex light transport effects such as glossy global illumination. After precomputation, we can relight the scene with new environment maps while…

Graphics · Computer Science 2023-07-13 Nithin Raghavan , Yan Xiao , Kai-En Lin , Tiancheng Sun , Sai Bi , Zexiang Xu , Tzu-Mao Li , Ravi Ramamoorthi

We consider the challenging problem of outdoor lighting estimation for the goal of photorealistic virtual object insertion into photographs. Existing works on outdoor lighting estimation typically simplify the scene lighting into an…

Computer Vision and Pattern Recognition · Computer Science 2022-08-22 Zian Wang , Wenzheng Chen , David Acuna , Jan Kautz , Sanja Fidler

Images captured under low-light conditions are often plagued by several challenges, including diminished contrast, increased noise, loss of fine details, and unnatural color reproduction. These factors can significantly hinder the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Miao Zhang , Yiqing Shen , Shenghui Zhong

Nighttime camera-based depth estimation is a highly challenging task, especially for autonomous driving applications, where accurate depth perception is essential for ensuring safe navigation. Models trained on daytime data often fail in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Simon de Moreau , Yasser Almehio , Andrei Bursuc , Hafid El-Idrissi , Bogdan Stanciulescu , Fabien Moutarde

This work presents and evaluates a novel compact scene representation based on Stixels that infers geometric and semantic information. Our approach overcomes the previous rather restrictive geometric assumptions for Stixels by introducing a…

Computer Vision and Pattern Recognition · Computer Science 2019-10-04 Daniel Hernandez-Juarez , Lukas Schneider , Pau Cebrian , Antonio Espinosa , David Vazquez , Antonio M. Lopez , Uwe Franke , Marc Pollefeys , Juan C. Moure

Recent advances in Neural Radiance Fields and 3D Gaussian Splatting have demonstrated strong potential for large-scale UAV-based 3D reconstruction tasks by fitting the appearance of images. However, real-world large-scale captures are often…

Computer Vision and Pattern Recognition · Computer Science 2025-12-17 Zhuoxiao Li , Wenzong Ma , Taoyu Wu , Jinjing Zhu , Zhenchao Q , Shuai Zhang , Jing Ou , Yinrui Ren , Weiqing Qi , Guobin Shen , Hui Xiong , Wufan Zhao

Recent single-image relighting methods, powered by advanced generative models, have achieved impressive photorealism on synthetic benchmarks. However, their effectiveness in the complex visual landscape of the real world remains largely…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Lezhong Wang , Mehmet Onurcan Kaya , Siavash Bigdeli , Jeppe Revall Frisvad

One of the most important issues in the image processing is the approximation of the image that has been lost due to the blurring process. These types of matters are divided into non-blind and blind problems. The second type of problem is…

Computer Vision and Pattern Recognition · Computer Science 2021-12-22 Reza Parvaz

Visual degradation caused by rain streak artifacts in low-light conditions significantly hampers the performance of nighttime surveillance and autonomous navigation. Existing image deraining techniques are primarily designed for daytime…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Huichun Liu , Xiaosong Li , Yang Liu , Xiaoqi Cheng , Haishu Tan

Sparse representations has shown to be a very powerful model for real world signals, and has enabled the development of applications with notable performance. Combined with the ability to learn a dictionary from signal examples,…

Computer Vision and Pattern Recognition · Computer Science 2016-05-13 Jeremias Sulam , Boaz Ophir , Michael Zibulevsky , Michael Elad

We introduce the Sparsity Roofline, a visual performance model for evaluating sparsity in neural networks. The Sparsity Roofline jointly models network accuracy, sparsity, and theoretical inference speedup. Our approach does not require…

Computer Vision and Pattern Recognition · Computer Science 2023-11-08 Cameron Shinn , Collin McCarthy , Saurav Muralidharan , Muhammad Osama , John D. Owens

This paper solves the Sparse Photometric stereo through Lighting Interpolation and Normal Estimation using a generative Network (SPLINE-Net). SPLINE-Net contains a lighting interpolation network to generate dense lighting observations given…

Computer Vision and Pattern Recognition · Computer Science 2019-10-10 Qian Zheng , Yiming Jia , Boxin Shi , Xudong Jiang , Ling-Yu Duan , Alex C. Kot

Prior art in traffic incident detection relies on high sensor coverage and is primarily based on decision-tree and random forest models that have limited representation capacity and, as a result, cannot detect incidents with high accuracy.…

Machine Learning · Computer Science 2024-08-05 Sai Shashank Peddiraju , Kaustubh Harapanahalli , Edward Andert , Aviral Shrivastava