Teacher-Student Adversarial Depth Hallucination to Improve Face Recognition

04/06/2021
by   Hardik Uppal, et al.
0

We present the Teacher-Student Generative Adversarial Network (TS-GAN) to generate depth images from a single RGB image in order to boost the recognition accuracy of face recognition (FR) systems. For our method to generalize well across unseen datasets, we design two components in the architecture, a teacher and a student. The teacher, which itself consists of a generator and a discriminator, learns a latent mapping between input RGB and paired depth images in a supervised fashion. The student, which consists of two generators (one shared with the teacher) and a discriminator, learns from new RGB data with no available paired depth information, for improved generalization. The fully trained shared generator can then be used in runtime to hallucinate depth from RGB for downstream applications such as face recognition. We perform rigorous experiments to show the superiority of TS-GAN over other methods in generating synthetic depth images. Moreover, face recognition experiments demonstrate that our hallucinated depth along with the input RGB images boosts performance across various architectures when compared to a single RGB modality by average values of +1.2 datasets respectively.

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