Farrajota, MiguelRodrigues, J. M. F.du Buf, J. M. H.2014-02-052014-02-052013-11Farrajota, Miguel; Rodrigues, J.M.F.; Buf, J. M. H.Keypoint clustering using cortical colour opponency, Trabalho apresentado em 19th Portuguese Conf. on Pattern Recognition, In 19th Portuguese Conf. on Pattern Recognition, Lisboa, Portugal, 2013AUT: DUB00865; JRO00913;http://hdl.handle.net/10400.1/3422Coloured regions can be segregated by using colour-opponency mechanisms, colour contrast, saturation or luminance. This paper focuses on clustering coloured regions by using colour tuned end-stopped cells. Colouinformation is coded in separate colour channels to convey differently coloured regions. Then, by using multi-scale cortical end-stopped cells tuned to colour, this information is coded in all channels by mapping it to the multi-scale peaks. Finally, unsupervised clustering is achieved by analysing the branches of these peaks and by linking them together on the basis of their colour, saturation and luminance information.engconference object2014-01-27