15th International Conference on Pattern Recognition (ICPR'00) - Volume 4
Locale-Based Visual Object Retrieval under Illumination Change
Barcelona, Spain
September 03-September 08
ISBN: 0-7695-0750-6
Providing a user with an effective image search engine has been a very active research area. A search by an object model is considered one of the most desirable and yet difficult tasks. An added difficulty is that objects can be photographed under different lighting conditions. We have developed a feature localization scheme that finds a set of locales in an image. We make use of a diagonal model for illumination change and obtain a candidate set of lighting transformation coefficients in chromaticity space. For each pair of coefficients, Elastic Correlation is performed, which is a form of correlation of locale colors. A Least Square (LS) minimization for pose estimation is then applied, followed by a process of texture support and shape verification. Tests on a database of over 1,400 images and video clips show promising image retrieval results. Moreover, it has been shown that the method is capable of recovering lighting changes.
Index Terms:
Color, Elastic Correlation, Illumination Invariance, Locales, Object Recognition, Search by Object Model
Citation:
Zinovi Tauber, Ze-Nian Li, Mark S. Drew, "Locale-Based Visual Object Retrieval under Illumination Change," icpr, vol. 4, pp.4043, 15th International Conference on Pattern Recognition (ICPR'00) - Volume 4, 2000