CAJ | 학술논문

对基于表面属性的三维模型检索进行研究,提出了基于面积颜色分布、基于球面颜色分布、基于颜色球面调和的三维模型检索方法以及基于表面属性的融合方法.通过对模型表面进行按面积均匀采样来获取其颜色分布信息后形成基于面积颜色分布的特征.通过对模型进行均匀球面采样获取颜色分布信息形成基于球面颜色分布的特征.通过首先将模型表面颜色信息按等经纬度球面采样映射为球面函数,然后对其进行球面调和变换形成颜色球面调和特征.融合特征通过对以上特征的两组或3组依一定权值组合而得到.为验证基于表面属性的三维模型检索方法的效果,建立了一个包含有1171个颜色模型的测试库.实验结果表明以上方法均对基于表面属性的三维模型检索具有较好的检索效果且融合特征可以得到优于任何单一特征的检索效果.
대기우표면속성적삼유모형검색진행연구,제출료기우면적안색분포、기우구면안색분포、기우안색구면조화적삼유모형검색방법이급기우표면속성적융합방법.통과대모형표면진행안면적균균채양래획취기안색분포신식후형성기우면적안색분포적특정.통과대모형진행균균구면채양획취안색분포신식형성기우구면안색분포적특정.통과수선장모형표면안색신식안등경위도구면채양영사위구면함수,연후대기진행구면조화변환형성안색구면조화특정.융합특정통과대이상특정적량조혹3조의일정권치조합이득도.위험증기우표면속성적삼유모형검색방법적효과,건립료일개포함유1171개안색모형적측시고.실험결과표명이상방법균대기우표면속성적삼유모형검색구유교호적검색효과차융합특정가이득도우우임하단일특정적검색효과.
Three different surface properties based descriptors and a hybrid descriptor are proposed.Color distribution descriptor is obtained from statistics of color values which are sampled from the models in quantized color space.Spherical color distribution descriptor is obtained from statistics of color values sampled from the sphere that is generated of unbiased sampling from model.Colored spherical harmonic descriptor is obtained by using spherical harmonic on separated RGB spherical functions of the sampled sphere.Then two or three of them are combined to generate the hybrid descriptor.A database with 1171 colored 3D models was created for evaluation.The proposed descriptors have been evaluated on the given database.Results show that these descriptors give good results in terms of surface properties based retrieval effectiveness and the hybrid descriptor can be the best.