Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Face relief geometric modeling method

A geometric modeling and face technology, applied in the field of face relief geometric modeling, can solve the problems of low efficiency and poor automation of portrait relief modeling

Active Publication Date: 2018-09-04
QILU UNIV OF TECH
View PDF10 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Face relief geometric modeling method
  • Face relief geometric modeling method
  • Face relief geometric modeling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0061] as attached figure 1 As shown, a face relief geometric modeling method of the present invention takes a single face image as input, performs three-dimensional geometry automatic reconstruction in the grid domain, and generates a face relief model according to the thickness and mapping angle specified by the user, Including the following steps:

[0062] S1. Locate the key feature points of the face on the input single face image, and obtain the feature points of the face image;

[0063] S2. Constructing an initial 3D face based on the BFM parameterized face model;

[0064] S3. Optimizing the shape of the initial 3D face based on the Bi-Laplacian constraint point displacement method to generate a 3D face after shape optimization;

[0065] S4. Based on the connection between the light intensity of the face image and the geometric normal of the 3D face, the height field optimization is performed on the 3D face after the shape optimization, and the highly optimized 3D face...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30
CPCG06T17/30G06T2200/04G06T2207/30201
Inventor 张玉伟
Owner QILU UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products