Guarda, André F. R.Rodrigues, Nuno M. M.Pereira, Fernando2025-09-092025-09-092020-07A. F. R. Guarda, N. M. M. Rodrigues and F. Pereira, "Deep Learning-Based Point Cloud Geometry Coding: RD Control Through Implicit and Explicit Quantization," 2020 IEEE International Conference on Multimedia & Expo Workshops (ICMEW), London, UK, 2020, pp. 1-6, doi: https://doi.org/10.1109/ICMEW46912.2020.9106022.978-1-7281-1486-6978-1-7281-1485-9http://hdl.handle.net/10400.8/14020Article number - 9106022; Conference city - London; Conference date - 6 July 2020 - 10 July 2020; Conference code - 162345EISBN - 978-1-7281-1485-9Deep learning is becoming more and more relevant for multiple multimedia processing tasks, and lately it has raised much interest in the coding arena notably for images and point clouds. While offering near state-of-the-art compression performance, current deep learning-based point cloud coding solutions have a shortcoming since they require training and storing multiple models in order to obtain different rate-distortion trade-offs. This paper proposes a solution that effectively reduces the number of deep learning models that need to be trained and stored by applying explicit quantization to the latent representation, which can be controlled at coding time, to generate varying rate-distortion tradeoffs. The proposed implicit-explicit quantization combination achieves a compression performance that is equivalent or better than the alternative, while significantly reducing the model storage memory requirements.engPoint cloud codingdeep learningexplicit quantizationmultiple modelsconference paper10.1109/icmew46912.2020.9106022