Asset Details
Do you wish to reserve the book?
Convexity and the set of Planckian lights
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Convexity and the set of Planckian lights
Do you wish to request the book?
Convexity and the set of Planckian lights
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Convexity and the set of Planckian lights
2025
Overview
The Planckian locus—a shallow curved line in chromaticity space—delimits the range of common illuminant colours. When we allow mixtures of colours the locus becomes a convex set, sometimes called an illumination gamut. Convex sets are rather simple geometric objects and are often deployed in computer vision and colour imaging and their convexity is an essential property that makes certain calculations computationally feasible.In this paper, we consider a commonly used mapping applied to the colour coordinates of lights: the logarithmic operator. Specifically, we take the logarithm of the (R, G, B) camera responses. We argue that the physical definition of Planckian illumination and the physics of image formation imply that convexity should be preserved under this transformation.
Publisher
IOP Publishing
Subject
