Linear Chromatic Adaptation Transform Based on Delaunay Triangulation
Joint Authors
Calvo, Pilar M.
Peer, Peter
Kreslin, Rok
Corzo, Luis G.
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-16
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Computer vision algorithms that use color information require color constant images to operate correctly.
Color constancy of the images is usually achieved in two steps: first the illuminant is detected and then image is transformed with the chromatic adaptation transform (CAT).
Existing CAT methods use a single transformation matrix for all the colors of the input image.
The method proposed in this paper requires multiple corresponding color pairs between source and target illuminants given by patches of the Macbeth color checker.
It uses Delaunay triangulation to divide the color gamut of the input image into small triangles.
Each color of the input image is associated with the triangle containing the color point and transformed with a full linear model associated with the triangle.
Full linear model is used because diagonal models are known to be inaccurate if channel color matching functions do not have narrow peaks.
Objective evaluation showed that the proposed method outperforms existing CAT methods by more than 21%; that is, it performs statistically significantly better than other existing methods.
American Psychological Association (APA)
Kreslin, Rok& Calvo, Pilar M.& Corzo, Luis G.& Peer, Peter. 2014. Linear Chromatic Adaptation Transform Based on Delaunay Triangulation. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-496571
Modern Language Association (MLA)
Kreslin, Rok…[et al.]. Linear Chromatic Adaptation Transform Based on Delaunay Triangulation. Mathematical Problems in Engineering No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-496571
American Medical Association (AMA)
Kreslin, Rok& Calvo, Pilar M.& Corzo, Luis G.& Peer, Peter. Linear Chromatic Adaptation Transform Based on Delaunay Triangulation. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-496571
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-496571