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《Chinese Journal of Scientific Instrument》 2010-01
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Research on local invariant features for anisotropic non-rigid deformation

Gong Weiguo,Tong Yujuan,Li Zhenghao (Key Lab for Opto-electronic Technology and System of Ministry of Education,Chongqing University,Chongqing 400044,China)  
Recently,the research work on local invariant features mainly focuses on obtaining the invariance to rigid deformation.However,the intrinsic appearance of an object under various view conditions is of the non-rigid deformation,especially the anisotropic one.Therefore,we propose a method using anisotropic non-rigid deformation invariant features.First,we conduct an isotropic deformation on the Maximally Stable Extremal Region,and rotate the corresponding pairs to the same orientation.Then,the original image is projected into 3D space.With the increase of the aspect weight,numerous sets of deformation invariant geodesic distance are obtained.At last,the Anisotropic Geodesic-Intensity Histogram is adopted as a non-rigid deformation invariant local descriptor to make the proposed algorithm fit anisotropic small deformation.Evaluations have been conducted on the non-rigid deformation dataset against Scale Invariant Feature Transform and Geodesic-Intensity Histogram.Result shows that the correct detection rate can be improved by about 10.65% under the same false positive rate.
【Fund】: 国家863高技术研究发展计划项目(2007AA01Z423);; 国防“十一五”基础科研基金项目(C10020060355);; 国防基础科研基金项目(CS-OC2);; 重庆市科技攻关计划项目(CSTC 2007AC2018)资助
【CateGory Index】: TP391.41
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