Efficient symmetry detection using local affine frames
2007 (English)In: Image Analysis, Proceedings / [ed] Ersboll, BK; Pedersen, KS, 2007, Vol. 4522, 152-161 p.Conference paper (Refereed)
We present an efficient method for detecting planar bilateral symmetries under perspective projection. The method uses local affine frames (LAFs) constructed on maximally stable extremal regions or any other affine covariant regions detected in the image to dramatically improve the process of detecting symmetric objects under perspective distortion. In contrast to the previous work no Hough transform, is used. Instead, each symmetric pair of LAFs votes just once for a single axis of symmetry. The time complexity of the method is n log(n), where n is the number of LAFs, allowing a near real-time performance. The proposed method is robust to background clutter and partial occlusion and is capable of detecting an arbitrary number of symmetries in the image.
Place, publisher, year, edition, pages
2007. Vol. 4522, 152-161 p.
, Lecture Notes in Computer Science, ISSN 0302-9743 ; 4522
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-39589ISI: 000247364000016ScopusID: 2-s2.0-38049090260ISBN: 978-3-540-73039-2OAI: oai:DiVA.org:kth-39589DiVA: diva2:441964
15th Scandinavian Conference on Image Analysis, SCIA 2007; Aalborg; 10 June 2007 through 14 June 2007