A Hierarchical Framework for Facial Age Estimation

الملخص EN

Age estimation is a complex issue of multiclassification or regression.

To address the problems of uneven distribution of age database and ignorance of ordinal information, this paper shows a hierarchic age estimation system, comprising age group and specific age estimation.

In our system, two novel classifiers, sequence k-nearest neighbor (SKNN) and ranking-KNN, are introduced to predict age group and value, respectively.

Notably, ranking-KNN utilizes the ordinal information between samples in estimation process rather than regards samples as separate individuals.

Tested on FG-NET database, our system achieves 4.97 evaluated by MAE (mean absolute error) for age estimation.