RGB-D facial expression samples from the KinectFaceDB database [23].

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RGB-D facial expression samples from the KinectFaceDB database [23].

Figure 1 from VT-KFER: A Kinect-based RGBD+time dataset for spontaneous and non-spontaneous facial expression recognition

Unconstrained Kinect video face database - ScienceDirect

A Comprehensive Database for Benchmarking Imaging Systems

Face recognition with Bayesian convolutional networks for robust surveillance systems, EURASIP Journal on Image and Video Processing

Some of the samples from some mentioned RGBD face databases in color

Beyond Privacy of Depth Sensors in Active and Assisted Living Devices

Example of occluded RGB facial images from EURECOM Kinect Face dataset

RGB‐D face recognition using LBP with suitable feature dimension of depth image - Abebe - 2019 - IET Cyber-Physical Systems: Theory & Applications - Wiley Online Library

Overview of research progress on 3-D face recognition

Figure 3 from VT-KFER: A Kinect-based RGBD+time dataset for spontaneous and non-spontaneous facial expression recognition