Unsupervised corrections of unknown chromatic dominants using a Brownian-path-based Retinex algorithm

Alessandro Rizzi; Daniele Marini; Luigi L. Rovati; Franco Docchio

doi:10.1117/1.1584051

1 July 2003 Unsupervised corrections of unknown chromatic dominants using a Brownian-path-based Retinex algorithm

Alessandro Rizzi, Daniele Marini, Luigi L. Rovati, Franco Docchio

Author Affiliations +

J. of Electronic Imaging, 12(3), (2003). https://doi.org/10.1117/1.1584051

Abstract

An experimental analysis of chromatic equalization based on a new implementation of the Retinex algorithm is presented. The experiments are carried out on a colored Mondrian patchwork illuminated with different commercial light sources and on synthetic images generated with a photometric ray tracer using different illuminants. Regarding the Mondrian patchwork, the spectral characteristics of the bulbs and the reflected light from each patch are measured using a commercial spectrometer. From the measured data, synthetic images of the patchwork with different illuminants are created and processed by the Retinex algorithm. The chromatic correction capabilities of the Retinex implementation have been measured and compared with unfiltered values and with the results of another Retinex implementation and classic color equalization algorithms. Results show that Retinex performs an unsupervised color correction without requiring any information about the spectral composition of the illuminant.

Citation Download Citation

Alessandro Rizzi, Alessandro Rizzi, Daniele Marini, Daniele Marini, Luigi L. Rovati, Luigi L. Rovati, Franco Docchio, Franco Docchio, } "Unsupervised corrections of unknown chromatic dominants using a Brownian-path-based Retinex algorithm," Journal of Electronic Imaging 12(3), (1 July 2003). https://doi.org/10.1117/1.1584051 . Submission:

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $20.00

Non-members: $25.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years