Spin image based on local shape similarity and its application

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Transactions on Computer Science and Technology September 2013, Volume 2, Issue 3, PP.40-48

Spin Image Based on Local Shape Similarity and

Its Application Yongwei Miao

1, Linghong Bao 2, Minyan Chen

1, Xudong Zhang

1

1. College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou 310023, China

2. College of Science, Zhejiang University of Technology, Hangzhou 310023, China

Email: ywmiao@zjut.edu.cn

Abstract

Local shape similarity, an indicator to measure how similar a region of 3D shape is or dissimilar to another region, has been widely

applied to computer graphics and computer vision. Different from traditional curvature map, a novel spin image based on local

shape similarity measure is presented in this paper and its application on visual enhancement of 3D models is also given. To

efficiently compare two different regions, the neighboring points for each surface vertex are firstly obtained by uniformly sampling

along evenly distributed directions on the tangent plane. The spin images are constructed for these uniformly distributed sampling

points and the local shape similarity measure can thus be calculated by comparing two spin images of different regions. Finally,

due to our proposed local shape similarity definition, an efficient visual enhancement scheme is provided by incorporating our

similarity measure into the color adjustment operation. Experimental results indicate that our spin image based on local shape

similarity definition is robust and also contributes to visual enhancement.

Keywords: Local Shape Similarity; Spin Image; Uniform Sampling; Visual Enhancement

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