Kai Zhu
ABSTRACT
Age Estimation from facial images has been receiving increasing interest due to its important applications. Among the existing age estimation algorithms, the personalized approaches have been shown to be the most effective ones. However, most of the person-specific approaches (e.g. MTWGP [1], AGES [2], WAS [3]) rely heavily on the availability of training images across different ages for a single subject, which is very difficult to satisfy in practical applications. In order to overcome this problem, we propose a new approach to age estimation, called Orthogonal Gaussian Process (OGP). Compared to standard Gaussian Process, OGP is much more efficient while maintaining the discriminatory power of the standard Gaussian Process. Based on OGP, we further propose an improvement of OGP called anisotropic OGP (A-OGP) to enhance the age estimation performance. Extensive experiments are conducted to demonstrate the state-of-the-art estimation accuracy of our new algorithm on several public-domain face aging datasets: FG-NET face dataset with 82 different subjects, Morph Album 1 dataset with more than 600 subjects, and Morph Album 2 with about 20,000 different subjects.
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Index Terms
- Orthogonal Gaussian Process for Automatic Age Estimation
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