Color pattern recognition with CIELAB coordinates

Montserrat Corbalan-Fuertes; Maria Sagrario Millan Garcia-Verela; Maria Josefa Yzuel

doi:10.1117/1.1428295

1 January 2002 Color pattern recognition with CIELAB coordinates

Montserrat Corbalan-Fuertes, Maria Sagrario Millan Garcia-Verela, Maria Josefa Yzuel

Optical Engineering, Vol. 41, Issue 1, (January 2002). https://doi.org/10.1117/1.1428295

A color pattern recognition system must identify a target by its shape and color distribution. In real situations, however, the color information is affected by changes of the light source (e.g., from indoor illumination to outdoor daylight), often making recognition impossible. In this work, we propose a color pattern recognition technique with tolerance for illumination changes within the common sources of white light. This can be accomplished using the coordinates of the CIELAB system, luminance (L*), chroma (C*), and hue (h*) instead of the conventional RGB system. The proposal has some additional advantages: there is no need to store a matched filters base to analyze scenes captured under different light sources (one set of filters for each illuminant light source) and therefore the recognition process can be simplified; and in most cases, the contribution of only two channels (C* and h*) is enough to avoid false alarms in color pattern recognition. From the results, we show that the recognition system is improved when CIELAB coordinates are used.

©(2002) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Montserrat Corbalan-Fuertes, Maria Sagrario Millan Garcia-Verela, and Maria Josefa Yzuel "Color pattern recognition with CIELAB coordinates," Optical Engineering 41(1), (1 January 2002). https://doi.org/10.1117/1.1428295

Published: 1 January 2002

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

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