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A bank of 3D log-Gabor filters is specially designed in the frequency domain and used to compute 3D energy maps, which are further combined to form the phase congruency measure. The PC measure is invariant to intensity variations and contrast resolution and provides a good indication of feature significance in an image. To detect significant 3D point landmarks, eigen-analysis of a 3\u00d73 matrix of second-order PC moments, computed for each point in the image, is performed followed by local maxima detection. Two different application scenarios in radiation therapy planning of the head and neck anatomy are used to illustrate the feasibility and usefulness of the proposed method.<\/jats:p>","DOI":"10.1007\/s13173-011-0032-8","type":"journal-article","created":{"date-parts":[[2011,3,18]],"date-time":"2011-03-18T10:41:27Z","timestamp":1300444887000},"page":"117-132","update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Detection of point landmarks in 3D medical images via phase congruency model"],"prefix":"10.1007","volume":"17","author":[{"given":"Ricardo J.","family":"Ferrari","sequence":"first","affiliation":[]},{"given":"St\u00e9phane","family":"Allaire","sequence":"additional","affiliation":[]},{"given":"Andrew","family":"Hope","sequence":"additional","affiliation":[]},{"given":"John","family":"Kim","sequence":"additional","affiliation":[]},{"given":"David","family":"Jaffray","sequence":"additional","affiliation":[]},{"given":"Vladimir","family":"Pekar","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2011,3,19]]},"reference":[{"key":"32_CR1","first-page":"1","volume-title":"MMBIA-2008","author":"S Allaire","year":"2008","unstructured":"Allaire S, Kim J, Breen S, Jaffray D, Pekar V (2008) Full orientation invariance and improved feature selectivity of 3D SIFT with application to medical image analysis. 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