Publication

Subjective Quality Evaluation Of High Dynamic Range Video And Display For Future TV

Touradj Ebrahimi, Philippe Hanhart
2014
Conference paper
Abstract

The main objective of this paper is to verify test methodologies for assessment high dynamic range (HDR) video. To achieve this, a next generation HDR monitor by Dolby Laboratories was used to display professionally produced HDR content, including some scenes from recently released movies. Two complementary approaches for subjective assessment of HDR video were then designed and carried out at the EBU and EPFL premises. Results obtained from both evaluations were highly correlated which show they offer a good degree of reliability and reproducibility in different situations. Analysis of the scores in both cases also show good confidence intervals for each point under test. Finally, they could demonstrate that an increase in terms of quality of experience can be expected from the conventional level of 100 nits to HDR/high brightness at 4’000 nits, with intermediate improvements at 400 and 1’000 nits.

About this result
This page is automatically generated and may contain information that is not correct, complete, up-to-date, or relevant to your search query. The same applies to every other page on this website. Please make sure to verify the information with EPFL's official sources.
Related concepts (32)
High dynamic range
High dynamic range (HDR) is a dynamic range higher than usual, synonyms are wide dynamic range, extended dynamic range, expanded dynamic range. The term is often used in discussing the dynamic range of various signals such as s, videos, audio or radio. It may apply to the means of recording, processing, and reproducing such signals including analog and digitized signals. The term is also the name of some of the technologies or techniques allowing to achieve high dynamic range images, videos, or audio.
Multi-exposure HDR capture
In photography and videography, multi-exposure HDR capture is a technique that creates extended or high dynamic range (HDR) images by taking and combining multiple exposures of the same subject matter at different exposure levels. Combining multiple images in this way results in an image with a greater dynamic range than what would be possible by taking one single image. The technique can also be used to capture video by taking and combining multiple exposures for each frame of the video.
High-dynamic-range rendering
High-dynamic-range rendering (HDRR or HDR rendering), also known as high-dynamic-range lighting, is the rendering of computer graphics scenes by using lighting calculations done in high dynamic range (HDR). This allows preservation of details that may be lost due to limiting contrast ratios. Video games and computer-generated movies and special effects benefit from this as it creates more realistic scenes than with more simplistic lighting models.
Show more
Related publications (34)

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

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
Show more
Related MOOCs (3)
Signs and LED displays
Comprendre le fonctionnement des enseignes et des afficheurs à LED, depuis les petites enseignes à motifs fixes jusqu'aux écrans géants à LED. Apprendre à les fabriquer et à les programmer les microc
Synchrotrons and X-Ray Free Electron Lasers (part 1)
Synchrotrons and X-Ray Free Electron Lasers (part 1)
Synchrotrons and X-Ray Free Electron Lasers (part 2)
The first MOOC to provide an extensive introduction to synchrotron and XFEL facilities and associated techniques and applications.

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.