Face relief geometric modeling method

Abstract

The present invention discloses a face relief geometric modeling method, and belongs to the field of relief modeling. The problems are solved that current portrait relief modeling is low in efficiencyand poor in automation. The method comprises the following steps of: performing face key feature point location for an input single face image, and obtaining face image feature points; based on a BFMparameter face model, constructing an initial 3D face; based on a Bi-Laplacian constrained point displacement method to perform shape optimization of the initial 3D face, and generating a 3D face after shape optimization; performing height field optimization of the 3D face after shape optimization based on a relation of the face image illumination intensity and the 3D face geometric normal, and generating a 3D face after height optimization; and performing linear compression of the 3D face after the height field optimization, generating an original 3D face relief, performing geometric detailoptimization of the original face relief through a Bi-Laplacian grid deformation method based on key point constraint, and generating a face relief with rich geometric details.

Description

technical field [0001] The invention relates to the field of relief modeling, in particular to a face relief geometric modeling method. Background technique [0002] Portrait relief is a common type of relief art. It carves concave and convex characters on the background plane or curved surface, and the use of light creates a sense of space. It conveys the shape of characters in a single material and limited volume thickness. An artistic expression between 2D portraits and 3D sculptures. According to the thickness, portrait relief can be divided into two types: shallow relief and high relief. [0003] Traditional digital portrait relief design is mainly based on manual modeling, which is highly professional. Designers need to construct points, lines and surfaces on software platforms (such as ArtCAM, Type3, JDPaint) to carry out a large number of virtual sculptures. The human-computer interaction is complicated. Designing a work requires Spend a few hours. How to improve ...

AI Technical Summary

Problems solved by technology

[0004] The technical task of the present invention is to address the above deficiencies, to provide a face relief geometric modeling method to solve the problems of low efficiency and poor automation of existing portrait relief modeling

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