标题：Portrait Relief Modeling from a Single Image
作者：Zhang Y.; Zhang C.; Wang W.; Chen Y.; Ji Z.; Hui L.
作者机构：[Zhang, Y] School of Mechanical and Automotive Engineering, Qilu University of Technology, 12689 Jinan, Shandong China 250353 (e-mail: zhangyuwei_scot 更多
来源：IEEE Transactions on Visualization and Computer Graphics
关键词：3D face reconstruction; bas-relief modeling; detail recovery; height compression; high relief modeling
摘要：We present a novel solution to enable portrait relief modeling from a single image. The main challenges are geometry reconstruction, facial details recovery and depth structure preservation. Previous image-based methods are developed for portrait bas-relief modeling in 2.5D form, but not adequate for 3D-like high relief modeling with undercut features. In this paper, we propose a template-based framework to generate portrait reliefs of various forms. Our method benefits from Shape-from-Shading (SFS). Specifically, we use bi-Laplacian mesh deformation to guide the relief modeling. Given a portrait image, we first use a template face to fit the portrait. We then apply bi-Laplacian mesh deformation to align the facial features. Afterwards, SFS-based reconstruction with a few user interactions is used to optimize the face depth, and create a relief with similar appearance to the input. Both depth structures and geometric details can be well constructed in the final relief. Experiments and comparisons to other methods demonstrate the effectiveness of the proposed method. IEEE