RT Journal Article T1 A new pyramid-based color image representation for visual localization T2 Image and Vision Computing A1 Urdiales-García, Amalia Cristina A1 Domínguez, Miguel A1 De-Trazegnies-Otero, Carmen Lourdes A1 Sandoval-Hernández, Francisco K1 Procesado de imágenes - Técnicas digitales AB This paper presents a new algorithm to extract a color graph from a real image so that it can be efficiently represented in a compact way. The proposal presents two main novelties. First, a new PCA-based color feature vector has been defined. This vector is resistant against illumination changes, noise and microtextures. Second, the image is segmented by means of a fast, hierarchical split and merge algorithm based on a pyramid structure that implicitly provides a color graph. In order to test the suitability of the proposed representation technique, simple localization experiments have been conducted in different real environments. PB Elsevier YR 2010 FD 2010 LK https://hdl.handle.net/10630/30238 UL https://hdl.handle.net/10630/30238 LA eng NO C. Urdiales, M. Dominguez, C. de Trazegnies, F. Sandoval, A new pyramid-based color image representation for visual localization, Image and Vision Computing, Volume 28, Issue 1, 2010, Pages 78-91, ISSN 0262-8856, https://doi.org/10.1016/j.imavis.2009.04.014. NO Junta de Andalucia, Project No. TIC249 (SIAMA) DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 21 ene 2026