Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Skull sex determining method based on spatial analysis

An identification method and subspace technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problem of low correct identification rate of skull test sample set, and achieve high accuracy rate and high degree of automation

Active Publication Date: 2015-03-18
BEIJING NORMAL UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is not easy to achieve accurate characteristic measurement on the computer
In addition, the correct identification rate of the current method for the skull test sample set is not high, basically no more than 90%

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
  • Skull sex determining method based on spatial analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] In order to introduce the technical solution of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 As shown, the main steps of the skull sex identification method based on subspace analysis of the present invention include:

[0025] 1) Classification training:

[0026] 1.1) Data normalization: Unify the three-dimensional grid data of the skull in the training sample set to the Frankfurt coordinate system, and use the distance between the center points of the left and right ear holes of each sample as the distance measurement unit of the sample, that is, the distance of all points on the sample Coordinates are scale-normalized; a reference skull is selected, and the following non-rigid data registration is performed on the skull data in the training sample set:

[0027] ① In the reference skull S 0 Randomly select a certain number of points M with ...

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 invention relates to a skull sex determining method based on spatial analysis. The method comprises the following steps: carrying out data standardization on skull data of a training sample; carrying out sub-spatial analysis on a standardized training sample data set so as to obtain a sub-spatial projection matrix; projecting the training sample to a low dimensional sub-space from a high dimensional original feature space, wherein a classifier is designed in the low dimensional sub-space; projecting standardized unknown skull data to the low dimensional sub-space by using a sub-spatial projection matrix obtained from the training; and classifying in the low dimensional sub-space by using the designed classifier. With the adoption of the method, complex manual measurement or expert knowledge is not needed, and the accuracy can be more than 94%, so that the method has important application values in criminal investigation fields.

Description

technical field [0001] The invention relates to the technical field of computer applications, in particular to a method for classifying skull gender by using subspace features. It is mainly used in criminal investigation, archaeology, forensic anthropology and other fields. Background technique [0002] Gender identification based on human skeletal morphology is one of the most basic research contents in forensic anthropology. The skull is composed of hard tissue, which is not easy to be destroyed compared with other bones, and can survive relatively intact after death. In many cases, only the skull of the victim remains at the scene of the criminal investigation, without other clues about the origin of the victim. This makes classic inspection techniques such as DNA and cranial image coincidence useless. The skull can only be used for identification of the source of the corpse, and gender identification is one of them. first step. Compared with other primates, especially...

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 Patents(China)
IPC IPC(8): G06K9/66
Inventor 段福庆王梦扬周明全
Owner BEIJING NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com