3DLBP and GLBP Detectors for Depth Imaging

I am interested in extracting functions from depth images. I found 3DLBP and GLBP detectors. But I cannot find the implementation (Matlab, opencv, ...)

I would like to know if there is any implementation for an LBP descriptor for depth images in opencv or C ++. Directed work: 3DLBP: Huang, Y., Wang, Y., Tan, T .: Combining geometric and correlation features statistics for 3D face recognition. And LBP Gradient: Tri Huynh, Rui Min, Jean-Luc Dugelay, "An Efficient LBP-Based Descriptor for Facial Depth Images Applied for Gender Recognition Using RGB-D Facial Data," at ACCV Computer Vision Workshop with Local Binary Pattern Variants 2012, Daejeon, Korea, November 2012. If anyone can help me and answer. many thanks