Dosil Lago, RaquelFernández Vidal, Xosé RamónPardo López, Xosé Manuel2024-02-092006-07-15Dosil, R., Fdez-Vidal, X. R., & Pardo, X. M. (2006). Distances between frequency features for 3D visual pattern partitioning. Pattern recognition letters, 27(10), 1127-1141.0167-8655http://hdl.handle.net/10347/32693In this paper we propose a technique for the decomposition of a 3D image into a set of low level patterns associated to phase congruency, which we call visual patterns. Those patterns have frequency components in a wide range of bands that are aligned in phase. The method involves clustering of the band-pass filtered versions of the image according to a measure of congruence in phase or, what is equivalent, alignment in the filter’s responses energy maxima. This is achieved by defining a distance between the responses of pairs of filters and applying a hierarchical clustering analysis to the resulting distance matrix. To measure the degree of maxima alignment we propose a set of alternative distances and study their suitability. From this study we conclude that a measure of linear dependence between the local energy of filters’ responses is more appropriate than a more general measure of dependence.engCC BY-NC-ND 4.0http://creativecommons.org/licenses/by-nc-nd/4.0/Low level feature extractionVisual pattern partitioningMultiresolution analysisImage dissimilarity estimationjournal article10.1016/j.patrec.2005.12.006open access