Criminology-oriented computer-assisted facial reconstruction method for skulls of unknown body sources

A skull and face technology, used in computing, image data processing, 3D modeling, etc.

Inactive Publication Date: 2014-03-26
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

A craniofacial data classification method and a craniofacial restoration method based on principal component analysis were proposed, overcoming the limitation of only relying on a single craniofacial sample to determine the facial restoration results

Method used

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  • Criminology-oriented computer-assisted facial reconstruction method for skulls of unknown body sources
  • Criminology-oriented computer-assisted facial reconstruction method for skulls of unknown body sources
  • Criminology-oriented computer-assisted facial reconstruction method for skulls of unknown body sources

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Experimental program
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Embodiment

[0158] In the experiment, a 3D laser scanner was first used to acquire a 3D model of an unknown source skull, such as figure 2 shown. The sex of the skull is then determined by measuring the geometrical measurements of the skull. The distribution of facial soft tissue directly affects the results of facial restoration. Therefore, in order to improve the reliability of facial restoration, the relationship between facial soft tissue distribution and gender and age distribution is analyzed based on the craniofacial database, and multiple factors such as age, gender, and appearance are considered. craniofacial classification library. Based on other clues left at the criminal investigation scene, forensic experts speculated on the age and appearance of the skull of the unknown source. For each craniofacial sample in the craniofacial classification database that conforms to the properties of the skull of unknown origin, the face restoration method based on dense point registratio...

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Abstract

The invention belongs to the fields of forensic anthropology and computer graphics and relates to a criminology-oriented computer-assisted facial reconstruction method for skulls of unknown body sources. The criminology-oriented computer-assisted facial reconstruction method mainly includes steps of 1 three-dimensional modeling of a skull of an unknown body source, 2 gender discrimination of the skull of the unknown body source, 3 dense point based facial soft tissue rule analysis, 4 dense point registration based skull facial reconstruction method, 5 principal component analysis based facial estimation of the skull of the unknown body source, 6 generating of investigated photos based on three-dimensional facial model. The criminology-oriented computer-assisted facial reconstruction method can fast achieve facial reconstruction for skulls of unknown body sources, and can predict the facial features of victims before their death for criminal case investigation.

Description

technical field [0001] The invention relates to a computer-aided face restoration method for unknown source skulls in the fields of forensic anthropology, computer graphics, etc., which can realize gender identification of unknown source skulls, analyze and discover the distribution law of facial soft tissues, and realize unknown source skulls. The three-dimensional face restoration of the skull can be applied to the face restoration of the unknown source of the skull at the scene of criminal investigation, and can predict the face of the victim for criminal case investigation. And it can be further promoted and applied in the fields of restoration of the faces of ancient celebrities in the field of archaeology, and evolution analysis of human faces in the field of anthropology. Background technique [0002] The skull is the inherent biological feature of the human face, and the face is the most direct basis for identification between people. The shape of the skull determine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/30
Inventor 周明全税午阳武仲科段福庆邓擎琼殷荣超
Owner BEIJING NORMAL UNIVERSITY
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