Method for extending three-dimensional face database

A 3D face and database technology, applied in the field of expanding face database, can solve problems such as unrealistic, insufficient coverage of 3D face database, limited data acquisition range and practicality, etc.
CN101877146AInactive Publication Date: 2010-11-03BEIJING UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING UNIV OF TECH
Publication Date
2010-11-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for extending a three-dimensional face database, which comprises the following steps of: selecting M samples as an initial database from an existing three-dimensional face database; taking the initial database as an initial population of a genetic algorithm, and taking each sample in the initial database as an individual in the initial population; randomly grouping the individuals in the initial population, randomly pairing the individuals in different two groups, and randomly exchanging organs of each pair of individuals; seaming the exchanged organs and a target face; varying genic values on each pair of individual gene sites; selecting reservation or discard of new individuals according to the similarity of the newly generated individuals and the individuals in the existing population; merging the existing population and the evolved new individual population, and extending the primary three-dimensional face database; and repeating the steps till the extended face database meets the requirement. The method can realize large-scale diverse data extension, and has the advantages of simple realization, good data extending effect, high operating speed and hardware cost saving.
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Description

technical field

[0001] The invention relates to a method for expanding a human face database in three-dimensional human face modeling in the field of pattern recognition. Background technique

[0002] Since the acquisition of 3D face data needs to rely on professional acquisition equipment and complex processing procedures, the establishment of a complete 3D face database is usually an expensive, time-consuming and laborious process. At present, the main 3D face data are: CMU's FIA database, which is a 3D database based on multi-view geometric information, including 180 people's 3D data information; 3D-RAM database, which is a 3D database based on structured light methods , use a camera and projector to obtain 3D coordinate information of people, including 3D data information of 129 people; GavabDB database, which uses Minolta VI-700 digital converter to obtain 427 3D face data with expression changes, these data are composed of 61 people composition. In 2007, Thomas S Hua...

Claims

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