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Shape Matching Based on Parabolic Fitting of Curvature Scale Space Maps

Author: WuFan
Tutor: ZhongBaoJiang
School: Nanjing University of Aeronautics and Astronautics
Course: Applied Mathematics
Keywords: Computer Vision Shape Matching Shape Description Curvature Scale Space Parabolic fitting
CLC: TP391.41
Type: Master's thesis
Year: 2011
Downloads: 51
Quote: 0
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Abstract


Match between the shape of the object requires two basic steps in the field of computer vision , shape description and shape similarity calculation based on the description of the data . The curvature scale space (CSS) technology is a novel shape description method , because of a series of excellent properties of selected MPEG-7 standard . This technique on the CSS each arcuate lines to extract the maximum point value , thereby performing a matching between shapes . The disadvantage of this description is to retain only the data of the highest point of the arch lines , while ignoring the other information in the arched lines , which can not fully reflect the characteristics of object contours . To solve only consider the problems that exist in the highest point value CSS description method , this article proposed a new description of CSS-based map , called CSS Fig parabolic fitting . A new description of the shape characteristics of the method according to the arcuate lines , with the two-stage parabolic half arc fitting each period arcuate lines , thereby recording the next CSS FIG more important information , it is possible to more effectively describe the shape of the object . CSS-based map parabolic fitting description method , the shape similarity calculation problem , further study and put forward a new matching algorithm . First, horizontal cycle pan fitted CSS Figure the highest parabola is located in the extreme left of the map of the new CSS , matching of both parabolic curve . Subsequently , the similarity between the shape of the object calculated to establish the mathematical model , a numerical measure whether the shape matching . Simulation results show that the CSS diagram parabola fitting description method and the corresponding shape of the similarity calculating method can exhibit good results on the effect of shape matching .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Pattern Recognition and devices > Image recognition device
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