Comput Math Methods Med - Automatic sex determination of skulls based on a statistical shape model.

Tópicos

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Resumo

Sex determination from skeletons is an important research subject in forensic medicine. Previous skeletal sex assessments are through subjective visual analysis by anthropologists or metric analysis of sexually dimorphic features. In this work, we present an automatic sex determination method for 3D digital skulls, in which a statistical shape model for skulls is constructed, which projects the high-dimensional skull data into a low-dimensional shape space, and Fisher discriminant analysis is used to classify skulls in the shape space. This method combines the advantages of metrical and morphological methods. It is easy to use without professional qualification and tedious manual measurement. With a group of Chinese skulls including 127 males and 81 females, we choose 92 males and 58 females to establish the discriminant model and validate the model with the other skulls. The correct rate is 95.7% and 91.4% for females and males, respectively. Leave-one-out test also shows that the method has a high accuracy.

Resumo Limpo

sex determin skeleton import research subject forens medicin previous skelet sex assess subject visual analysi anthropologist metric analysi sexual dimorph featur work present automat sex determin method d digit skull statist shape model skull construct project highdimension skull data lowdimension shape space fisher discrimin analysi use classifi skull shape space method combin advantag metric morpholog method easi use without profession qualif tedious manual measur group chines skull includ male femal choos male femal establish discrimin model valid model skull correct rate femal male respect leaveoneout test also show method high accuraci

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