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Remains 3D reconstruction method based on frontal image

A technology of 3D reconstruction and frontal image, applied in the field of face reconstruction, which can solve problems such as irreparable and time-consuming

Active Publication Date: 2018-01-09
民政部一零一研究所
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Problems solved by technology

For the remains with severe deformation or defect of the head and face, it can only be reconstructed with the help of photos, like a sculpture, which requires extremely high aesthetic and manual skills. Even experienced embalmers and plastic surgeons may not be able to restore the deceased Original appearance, repair distortion, time-consuming, impossible to repair, etc. are currently insurmountable problems

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  • Remains 3D reconstruction method based on frontal image
  • Remains 3D reconstruction method based on frontal image
  • Remains 3D reconstruction method based on frontal image

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Embodiment Construction

[0012] 1 overall design

[0013] This method is based on the face reconstruction technology of the frontal image, and the method of combining the statistical model and parameter optimization based on the 3D face scanning database, figure 1 A 3D face reconstruction framework based on a single image is given, and its overall design is as follows:

[0014] (1) Based on the 3D face scanning database, generate a set of 3D face mesh models with aligned features and consistent topological structure, and use the shape statistical analysis method to establish a statistical model of the 3D face (represented by a probability model based on PCA statistical variation in the shape of the human head);

[0015] (2) For a given frontal photo of a face, automatically extract a set of feature points of the face, use this set of feature points to optimize the shape parameters and projection matrix parameters of the statistical model, and obtain the optimal 3D face of the given photo face model....

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Abstract

A remains 3D reconstruction method based on a frontal image is characterized by a single picture 3D face reconstruction technology based on a statistical model. The method comprises creating a 3D facestatistical model based on a 3D face database in advance, and training a 2D face feature point parameter model by using a SDM algorithm based on a 2D face database. During the face reconstruction based on a single frontal image, the face feature points are extracted first by using a two-dimensional image feature point parameter model; then, an energy function is subjected to iterative optimization by an learning factor adaptive gradient descent method based on the three-dimensional face statistics model to obtain the parameterized vector of the statistical model, that is, the three-dimensional face model corresponding to the two-dimensional face image is obtained. Results show that the face reconstructed by the method has high similarity.

Description

technical field [0001] The face reconstruction technology based on the frontal image of the present invention adopts the method of combining the statistical model and parameter optimization based on the 3D face scanning database, and automatically generates a three-dimensional face model that can be directly used for 3D printing, and is mainly used in the face of the remains repair. Background technique [0002] Remains plastic surgery technology: Remains plastic surgery and farewell are important links in the funeral process that embody the basic concept of people-oriented and express the development of human spiritual civilization, and are mainly completed by remains plastic surgeons. Due to the uniqueness and uniqueness of the human face, the traditional restoration of remains is manually shaped, requiring coloring and makeup based on sculpture. The materials are mainly plasticine, gypsum, oil mud, etc. The cosmetic effect depends on the personal technical ability of the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06K9/00
Inventor 李玉光陈霜玲吴壮志李伯森付慧群刘崇史峰
Owner 民政部一零一研究所
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