]> 2026-04-04T13:42:59+02:00 Publications:Histogram of directions by the structure tensor 500 en <p>Many low-level features, as well as varying methods of extraction and interpretation rely on directionality analysis (for example the Hough transform, Gabor filters, SIFT descriptors and the structure tensor). The theory of the gradient based structure tensor (a.k.a. the second moment matrix) is a very well suited theoretical platform in which to analyze and explain the similarities and connections (indeed often equivalence) of supposedly different methods and features that deal with image directionality. Of special interest to this study is the SIFT descriptors (histogram of oriented gradients, HOGs). Our analysis of interrelationships of prominent directionality analysis tools offers the possibility of computation of HOGs without binning, in an algorithm of comparative time complexity.</p> The 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies, ISABEL’11, October 26-29, Barcelona http://dx.doi.org/10.1145/2093698.2093794 http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:563310 Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies Conference Paper Histogram of directions by the structure tensor 2011 2016-09-30T20:40:12Z 2457662.36125 Histogram of directions by the structure tensor 500 0 plainlist list 1 [[:Publications:Histogram of directions by the structure tensor]] Histogram of directions by the structure tensor# QUERYaf5ad5770e6ea3af7a1eb62b7746665f 500 [2,"smw-datavalue-property-restricted-annotation-use","Publisher"] Histogram of directions by the structure tensor# ERR6c155b5d70b69ddb590b4f2e73389c2a 500 [2,"smw-datavalue-property-restricted-annotation-use","Author"] Histogram of directions by the structure tensor# ERRe24f17e090c98448f3de99d03182b7b6