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Alessandro Rizzi Short Bio
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. He presented tutorial on HDR at several conferences, like e.g.
ICIAP, Color Imaging Conf., Electronic Imaging, etc. On this topic he has published several papers and two books: - J.J. McCann; V. Vonikakis;
A. Rizzi, HDR Scene Capture and Appearance, SPIE Spotlight Series, Volume:
SL35, Pages: 92, December 2017, ISBN: 9781510618541. - J.J McCann, A. Rizzi,
The Art and Science of HDR Imaging, John Wiley, ISBN: 978-0-470-66622-7, pp.
XXV+389, (2011).
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More than 20 years of
High-Dynamic-Range imaging: history, state of the art,
improvements and limits Tutorial Description: 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. 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.
Short outline: 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 Books: John J. McCann, Alessandro Rizzi. The
Art and Science of HDR Imaging, 2011. The Wiley-IS&T Series in
Imaging Science and Technology, DOI:10.1002/9781119951483, ISBN: 978-0-470-66622-7. John J.
McCann, Vassilios Vonikakis, Alessandro Rizzi. HDR
Scene Capture and Appearance, 2017. SPIE PRESS BOOK, SL35. Target audience: Any student or scholar that has to deal with HDR in its many
fields of application in computer vision, like e.g. medical imaging, advanced
learning, technology of displays, video, etc. Course Level: Intermediate
Materials to be distributed to attendees: Slides and all the materials used in the course will be
distributed to the attendees
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