کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
440577 691174 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectral pose transfer
ترجمه فارسی عنوان
انتقال ظاهری طیفی
کلمات کلیدی
انتقال ظاهر، تجزیه طیفی، متوسط ​​در معرض، پایگاه های شبه هارمونیک متصل شده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر گرافیک کامپیوتری و طراحی به کمک کامپیوتر
چکیده انگلیسی

In spectral decomposition of a 3D mesh model, it is well known that eigenvectors with respect to small eigenvalues determine its main pose while eigenvectors associated with large eigenvalues encode its surface details. Based on this property, given two meshes with different connectivities, one can use coupled quasi-harmonic technique to transfer the pose of one mesh onto the other by exchanging the low-frequency coefficients in their spectral representations. However, directly synthesizing the new low frequencies with old high frequencies usually exhibits two vital artifacts: one is detail shearing and shape collapsing, and the other is medium-scale pose missing. This paper reformulates the pose transfer as a deformation problem with low-frequency coefficients as handles. It finally leads to a non-linear optimization with the coefficients as data constraint and Laplacian coordinates as regularity term for preserving details. Meanwhile, a hierarchical pose transfer framework is introduced to capture the medium-frequency poses. To reduce the computation complexity and enhance the stability we further solve the problem in a subspace defined by mean-value coordinates.

Naively transferring low-frequency coefficients fails to correctly capture the reference pose and source details: (a) and (b) are respectively reference and source meshes; (c) result by copying coefficients with bases optimization (Kovnatsky et al., 2013); (d) our pose transfer.Figure optionsDownload high-quality image (83 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Aided Geometric Design - Volumes 35–36, May 2015, Pages 82–94
نویسندگان
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