Publications related to Tone mapping

Tone-mapping requirements in real-time videos for studying the dynamism of views-out in virtual reality

Marilyne Andersen, Caroline Karmann, Stephen William Wasilewski, Yunjoung Cho

Current view representation methods in VR predominantly rely on static photographs and tone-mapping operators without temporal variations, limiting the exploration of dynamic features in a view. This study presents an alternative workflow to capture dynami ...

2023

Performance investigation of cameras using HDR sensors for daylight glare evaluations

Jan Wienold, Geraldine Cai Ting Quek, Dong Hyun Kim

This study presents a novel framework for evaluating the luminance measurement capabilities of High Dynamic Range (HDR) sensor cameras in indoor glare conditions. Results indicate that the practical usage range of the CSEM VIP camera is significantly lower ...

International Commission on Illumination2023

PlaceNet: A multi-scale semantic-aware model for visual loop closure detection

Hussein Fadl Hassan Hassan Osman

Loop closure detection helps simultaneous localization and mapping systems reduce map and state uncertainty via recognizing previously visited places along the path of a mobile robot. However, visual loop closure detection is susceptible to scenes with dyn ...

PERGAMON-ELSEVIER SCIENCE LTD2022

Raytraverse: Navigating the Lightfield to Enhance Climate-Based Daylight Modeling

Marilyne Andersen, Jan Wienold, Stephen William Wasilewski

We propose a new method for climate-based daylight modeling (CBDM) based on simulating and evaluating only the most important features. By adaptively sampling the temporal lightfield that describes daylight in buildings, our method escapes the curse of dim ...

2021

Comparing performance of discomfort glare metrics in high and low adaptation levels

Marilyne Andersen, Jan Wienold, Geraldine Cai Ting Quek, Mandana Sarey Khanie

Current discomfort glare prediction metrics usually account for at least one of the two categories of effects that induce discomfort glare – the saturation and contrast effects. Saturation-driven metrics (overall illuminance on the eye) are suited for brig ...

2021

High dynamic range image sharing with privacy protection

Touradj Ebrahimi, Evgeniy Upenik, Pol Fernandez Marti

Sharing pictures has become a very popular practice among consumers. Most recent cameras, displays, and smartphones can capture and display images in high dynamic range and wide colour gamut, contributing to an increase of this type of content. It is a wel ...

SPIE2020

Tutorial: Luminance Maps for Daylighting Studies from High Dynamic Range Photography

Jan Wienold, Clotilde Marie A Pierson, Magali Bodart

In the field of lighting, luminance maps are often used to evaluate point-in-time lighting scenes from the occupant’s vantage point. High Dynamic Range (HDR) photography can be used to generate such luminance maps. The aim of this tutorial is to present a ...

2020

Design and Validation of a Compact Embedded Photometric Device for Real-time Daylighting Computing in Office Buildings

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Yujie Wu

Studies have shown that the exposure to daylight can have substantial visual/non-visual benefits for building occupants. To optimise daylighting provision while maintaining a comfortable visual environment, daylighting control systems have been investigate ...

2019

Modeling and Analysis of a Direct Time-of-Flight Sensor Architecture for LiDAR Applications

Edoardo Charbon, Chunmin Zhang, Preethi Padmanabhan

Direct time-of-flight (DTOF) is a prominent depth sensing method in light detection and ranging (LiDAR) applications. Single-photon avalanche diode (SPAD) arrays integrated in DTOF sensors have demonstrated excellent ranging and 3D imaging capabilities, ma ...

2019

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Tone mapping

Tone-mapping requirements in real-time videos for studying the dynamism of views-out in virtual reality

Discovering perceived images of reused industrial heritage from user-generated photos: Three mega-event reinforced industrial heritage transformation cases

Performance investigation of cameras using HDR sensors for daylight glare evaluations

PlaceNet: A multi-scale semantic-aware model for visual loop closure detection

Raytraverse: Navigating the Lightfield to Enhance Climate-Based Daylight Modeling

Comparing performance of discomfort glare metrics in high and low adaptation levels

High dynamic range image sharing with privacy protection

Tutorial: Luminance Maps for Daylighting Studies from High Dynamic Range Photography

Design and Validation of a Compact Embedded Photometric Device for Real-time Daylighting Computing in Office Buildings

Modeling and Analysis of a Direct Time-of-Flight Sensor Architecture for LiDAR Applications

Graph Chatbot

Chat with Graph Search

Discovering perceived images of reused industrial heritage from user-generated photos: Three mega-event reinforced industrial heritage transformation cases

PlaceNet: A multi-scale semantic-aware model for visual loop closure detection

High dynamic range image sharing with privacy protection

Comparing performance of discomfort glare metrics in high and low adaptation levels

Design and Validation of a Compact Embedded Photometric Device for Real-time Daylighting Computing in Office Buildings

Performance investigation of cameras using HDR sensors for daylight glare evaluations

Raytraverse: Navigating the Lightfield to Enhance Climate-Based Daylight Modeling

Tutorial: Luminance Maps for Daylighting Studies from High Dynamic Range Photography

Modeling and Analysis of a Direct Time-of-Flight Sensor Architecture for LiDAR Applications