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In this work we describe a Convolutional Neural Network (CNN) to accurately predict the scene illumination. Taking image patches as input, the CNN works in the spatial domain without using hand-crafted features that are employed by most…

Computer Vision and Pattern Recognition · Computer Science 2015-04-20 Simone Bianco , Claudio Cusano , Raimondo Schettini

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

Computational color constancy refers to the estimation of the scene illumination and makes the perceived color relatively stable under varying illumination. In the past few years, deep Convolutional Neural Networks (CNNs) have delivered…

Computer Vision and Pattern Recognition · Computer Science 2019-07-12 Jun Zhang , Tong Zheng , Shengping Zhang , Meng Wang

We present a scheme for fast environment light estimation from the RGBD appearance of individual objects and their local image areas. Conventional inverse rendering is too computationally demanding for real-time applications, and the…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Xin Wei , Guojun Chen , Yue Dong , Stephen Lin , Xin Tong

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

We present a CNN-based technique to estimate high-dynamic range outdoor illumination from a single low dynamic range image. To train the CNN, we leverage a large dataset of outdoor panoramas. We fit a low-dimensional physically-based…

Computer Vision and Pattern Recognition · Computer Science 2018-04-13 Yannick Hold-Geoffroy , Kalyan Sunkavalli , Sunil Hadap , Emiliano Gambaretto , Jean-François Lalonde

We propose a physically-motivated deep learning framework to solve a general version of the challenging indoor lighting estimation problem. Given a single LDR image with a depth map, our method predicts spatially consistent lighting at any…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Zhengqin Li , Li Yu , Mikhail Okunev , Manmohan Chandraker , Zhao Dong

Recently, Convolutional Neural Networks (CNNs) have been widely used to solve the illuminant estimation problem and have often led to state-of-the-art results. Standard approaches operate directly on the input image. In this paper, we argue…

Image and Video Processing · Electrical Eng. & Systems 2021-11-11 Firas Laakom , Jenni Raitoharju , Jarno Nikkanen , Alexandros Iosifidis , Moncef Gabbouj

Scene understanding plays an important role in several high-level computer vision applications, such as autonomous vehicles, intelligent video surveillance, or robotics. However, too few solutions have been proposed for indoor/outdoor scene…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Ayman Beghdadi , Azeddine Beghdadi , Mohib Ullah , Faouzi Alaya Cheikh , Malik Mallem

In this work, we propose a step towards a more accurate prediction of the environment light given a single picture of a known object. To achieve this, we developed a deep learning method that is able to encode the latent space of indoor…

Computer Vision and Pattern Recognition · Computer Science 2018-08-14 Henrique Weber , Donald Prévost , Jean-François Lalonde

Advances in high dynamic range (HDR) lighting estimation from a single image have opened new possibilities for augmented reality (AR) applications. Predicting complex lighting environments from a single input image allows for the realistic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Zitian Zhang , Joshua Urban Davis , Jeanne Phuong Anh Vu , Jiangtao Kuang , Jean-François Lalonde

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

Real-time rendering with global illumination is crucial to afford the user realistic experience in virtual environments. We present a learning-based estimator to predict diffuse indirect illumination in screen space, which then is combined…

Graphics · Computer Science 2025-11-06 Meng Gai , Guoping Wang , Sheng Li

Computational color constancy refers to the problem of computing the illuminant color so that the images of a scene under varying illumination can be normalized to an image under the canonical illumination. In this paper, we adopt a deep…

Computer Vision and Pattern Recognition · Computer Science 2016-08-30 Seoung Wug Oh , Seon Joo Kim

We present a method to estimate lighting from a single image of an indoor scene. Previous work has used an environment map representation that does not account for the localized nature of indoor lighting. Instead, we represent lighting as a…

Computer Vision and Pattern Recognition · Computer Science 2019-10-22 Marc-André Gardner , Yannick Hold-Geoffroy , Kalyan Sunkavalli , Christian Gagné , Jean-François Lalonde

The aim of colour constancy is to discount the effect of the scene illumination from the image colours and restore the colours of the objects as captured under a 'white' illuminant. For the majority of colour constancy methods, the first…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Ghalia Hemrit , Joseph Meehan

This paper presents an illumination estimation method for virtual objects in real environment by learning. While previous works tackled this problem by reconstructing high dynamic range (HDR) environment maps or the corresponding spherical…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Di Xu , Zhen Li , Yanning Zhang , Qi Cao

In computer vision, convolutional neural networks (CNNs) have recently achieved new levels of performance for several inverse problems where RGB pixel appearance is mapped to attributes such as positions, normals or reflectance. In computer…

Graphics · Computer Science 2017-07-10 Oliver Nalbach , Elena Arabadzhiyska , Dushyant Mehta , Hans-Peter Seidel , Tobias Ritschel

Inverse rendering is an ill-posed problem. Previous work has sought to resolve this by focussing on priors for object or scene shape or appearance. In this work, we instead focus on a prior for natural illuminations. Current methods rely on…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 James A. D. Gardner , Bernhard Egger , William A. P. Smith

Light plays a vital role in vision either human or machine vision, the perceived color is always based on the lighting conditions of the surroundings. Researchers are working to enhance the color detection techniques for the application of…

Computer Vision and Pattern Recognition · Computer Science 2024-02-08 Nizamuddin Maitlo , Nooruddin Noonari , Sajid Ahmed Ghanghro , Sathishkumar Duraisamy , Fayaz Ahmed
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