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Face image three-dimensional reconstruction method for fusion of sparse deformation model and principal component regression algorithm

A principal component regression, three-dimensional reconstruction technology, applied in the field of face reconstruction

Inactive Publication Date: 2017-02-22
YANGZHOU UNIV
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Problems solved by technology

Therefore, it is extremely challenging to reconstruct a face model from a single photo

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  • Face image three-dimensional reconstruction method for fusion of sparse deformation model and principal component regression algorithm
  • Face image three-dimensional reconstruction method for fusion of sparse deformation model and principal component regression algorithm
  • Face image three-dimensional reconstruction method for fusion of sparse deformation model and principal component regression algorithm

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Embodiment Construction

[0062] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and a method for three-dimensional reconstruction of facial photos that integrates sparse deformation models and principal component regression algorithms.

[0063] The present invention comprises the following steps:

[0064] 1) Establish a sparse 3D face database and a corresponding 2D face database. We represent each face in the database as:

[0065] S=(X 1 ,Y 1 ,Z 1 ,...,X n ,Y n ,Z n ) T ∈R 3n (1)

[0066] where X i ,Y i ,Z i is the coordinates of the midpoint of each face, and n represents the number of face points.

[0067] Assuming there are m faces in the database, then each face can be described as S i , by the iterative dense alignment algorithm, each S can be i Face alignment. Since each face is overall similar, only minor variations exist. Therefore, we use the principal component analysis algorithm to reduce t...

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Abstract

The present invention provides a three-dimensional face reconstruction method based on a single image, especially a face image three-dimensional reconstruction method for combination of a sparse deformation model and a principal component regression algorithm, belonging to the computer graphics and computer vision technology field. The method comprises the following step: 1) establishing a sparse three-dimensional face database and a two-dimensional face database corresponding to the same; 2) performing initial modeling through an improved principal component regression algorithm, and obtaining the initial sparse three-dimensional face shape model; and 3) employing an improved particle swarm optimization algorithm to perform texture reconstruction, mapping the reconstructed texture to the three-dimensional model, and obtaining a complete reconstruction model. Through the three-dimensional face reconstruction technology and application of a single front face image, the face image three-dimensional reconstruction method for fusion of the sparse deformation model and the principal component regression algorithm performs an in-depth study, establishes an accurate face sparse model and improves the time efficiency at the aspect of the texture recovery so as to solve the key problem in the reconstruction process to some extent.

Description

technical field [0001] The invention relates to a three-dimensional face reconstruction method based on a single photo, in particular to a face reconstruction method combining a principal component regression algorithm and a sparse deformation model, belonging to the technical fields of computer graphics and computer vision. Background technique [0002] With the rapid development of multimedia technology, 3D models have been widely used in many fields such as film and television animation, human-computer interaction, communication, and medical treatment. As a branch direction of 3D modeling, face modeling has become a topic that more and more researchers pay attention to. However, due to the complex geometric structure and physiological structure of the human face, as well as the diversity of its illumination characteristics. Therefore, it is extremely challenging to reconstruct a face model from a single photo. [0003] The 3D face modeling based on a single image is to ...

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Application Information

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IPC IPC(8): G06T17/00
CPCG06T17/00G06T2207/30201
Inventor 孙进刘远朱兴龙黄则栋丁静
Owner YANGZHOU UNIV