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dc.contributor.authorLo, RCen_US
dc.contributor.authorTsai, WHen_US
dc.date.accessioned2014-12-08T15:02:28Z-
dc.date.available2014-12-08T15:02:28Z-
dc.date.issued1996-08-01en_US
dc.identifier.issn1350-245Xen_US
dc.identifier.urihttp://hdl.handle.net/11536/1141-
dc.description.abstractA new approach to 2-dimensional (2D) colour-image detection and matching using a modified version of the generalised Hough transform (GHT) is proposed. In the conventional GHT. the useful colour information existing in the input image and the relationship between each pixel and its neighbourhood are not used. Furthermore, lighting changes in the image are not usually considered. Therefore, the conventional GHT is seldom applied to colour images. In the proposed approach, lighting changes are removed using normalised colour values, Next, certain critical pixels of an input colour image whose neighbourhoods have larger variances of normalised colour values are extracted. For each critical pixel, a feature vector, which includes the normalised colour values of the pixel as well as those of the pixel's neighbours, is then constructed. A modified voting rule for the GHT is therefore proposed which is based on a similarity-measure function of the feature vectors. High maximum peaks in the cell array are searched finally as the result. The proposed method is robust for colour-image detection and matching in noisy, occlusive, and lighting-change environments, as demonstrated by experimental results.en_US
dc.language.isoen_USen_US
dc.subjectcolour-image matchingen_US
dc.subjectHough transformen_US
dc.subjectnormalised colour valuesen_US
dc.subjectfeature vectorsen_US
dc.titleColour image detection and matching using modified generalised Hough transformen_US
dc.typeArticleen_US
dc.identifier.journalIEE PROCEEDINGS-VISION IMAGE AND SIGNAL PROCESSINGen_US
dc.citation.volume143en_US
dc.citation.issue4en_US
dc.citation.spage201en_US
dc.citation.epage209en_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
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