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AutoSens Tutorial 1: The Three Goals of HDR

Sep 23, 2020 1:00 pm - 4:00 pm

High Dynamic Range (HDR) imaging is a continuously evolving part of Imaging. More than twenty years ago HDR started to be popular with the seminal paper of Debevec and Malik proposing multiple exposures to attempt to capture a wider range of scene information

Ten-plus years ago interest evolved to recreating HDR scenes by integrating widely-used LCD with LED illumination (Helge Seetzen’s Brightsides Displays). Today, the evolution continues in the current sales of HDR televisions using OLED and Quantum Dot technologies. As well, standards for HDR video media formats remain an active area of research.

This tutorial reviews the science and technology underlying the evolution of HDR imaging from silver-halide photography to HDR TVs. HDR technology is a complex problem controlled by optics, signal-processing and visual limits. The solution depends on its goal.

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After a detailed description of the dynamic range problem in image acquisition, this course focuses on standard methods of creating and manipulating HDR images focusing on the different possible goals of the HDR pipeline: reproducing light field, reproducing appearance, improving image aesthetic and visibility. For each goal a careful analysis of characteristics, limits and ground truth will be presented. The course aims at replacing myths with measurements about the limits of accurate camera acquisition (range and color) and the usable range of light for displays presented to human vision. It discusses the principles of tone rendering and the role of HDR spatial comparisons.

Content Overview

  • HDR Reproduction History
  • HDR principles, devices and techniques
  • The 3 HDR goals
  • Reproducing original HDR scene: Capture Challenges
  • Rendering Appearance for LDR display: Display Challenges
  • Improving image aesthetic and visibility: HDR in Human Vision
  • Goals, ground-truths and assessment criteria for HDR applications

Tutorial Leader

Alessandro Rizzi is Full Professor and head of MIPSLab, at the Department of Computer Science, University of Milan. He researches on color, HDR, and related perceptual issues. He is one of the founders of the Italian Color Group, Secretary of CIE Division 8, and IS&T Fellow and Vice President, topical editor of Journal of Optical Society of America, associate editor of Journal of Electronic Imaging. In 2015 received the Davies Medal from the Royal Photographic Society.
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Details

Date:
September 23
Time:
1:00 pm - 4:00 pm BST
Cost:
£149
Event Category:
Website:
View Website →

Venue

Online

Organizer

Sense Media
Phone:
+44 (0)208 133 5116
Email:
info@sensemedia-events.com
Website:
https://www.sensemedia-events.com/

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