@InProceedings{EndriceViei:2020:LuRaSt,
author = "Endrice, Lucas Niquele and Vieira Neto, Hugo",
affiliation = "Federal University of Technology - Paran{\'a}, Curitiba, Brazil
and Federal University of Technology - Paran{\'a}, Curitiba,
Brazil",
title = "Luminance Ratios for Stable SIFT Keypoint Detection in Challenging
Illuminations Scenarios",
booktitle = "Proceedings...",
year = "2020",
editor = "Musse, Soraia Raupp and Cesar Junior, Roberto Marcondes and
Pelechano, Nuria and Wang, Zhangyang (Atlas)",
organization = "Conference on Graphics, Patterns and Images, 33. (SIBGRAPI)",
publisher = "IEEE Computer Society",
address = "Los Alamitos",
keywords = "scale space feature detector, SIFT, illumination invariance.",
abstract = "Invariance to changes in scene illumination is a desirable feature
in computer vision, but its accomplishment is still a challenge
even for modern systems. This paper proposes a novel way to detect
keypoints in scale-space by exploring the concept of luminance
ratio first introduced in Wallach's Lightness Constancy Theory,
instead of using linear difference operators. The hypothesis is
that an operator based on the concept of luminance ratio may
provide more robust results with respect to illumination changes.
In order to test this hypothesis, the SIFT keypoint detector was
adapted to the proposed approach with minimum implementation
effort. Experimental results show that the luminance ratio
approach indeed yields more stable keypoint detection than the
original SIFT based on linear difference operators, specially in
lower illumination conditions. Existing SIFT implementations can
be easily adapted to use the luminance ratio concept for improved
operation in environments with uncontrolled lighting conditions.",
conference-location = "Porto de Galinhas (virtual)",
conference-year = "7-10 Nov. 2020",
doi = "10.1109/SIBGRAPI51738.2020.00019",
url = "http://dx.doi.org/10.1109/SIBGRAPI51738.2020.00019",
language = "en",
ibi = "8JMKD3MGPEW34M/4394J75",
url = "http://urlib.net/ibi/8JMKD3MGPEW34M/4394J75",
targetfile = "59.pdf",
urlaccessdate = "2024, May 06"
}