Diff-PCC: Diffusion-based Neural Compression for 3D Point Clouds
<|reference_start|>Diff-PCC: Diffusion-based Neural Compression for 3D Point Clouds: Stable diffusion networks have emerged as a groundbreaking development for their ability to produce realistic and detailed visual content. This characteristic renders them ideal decoders, capable of producing high-quality and aesthetically pleasing reconstructions. In this paper, we introduce the first diffusion-based point cloud compression method, dubbed Diff-PCC, to leverage the expressive power of the diffusion model for generative and aesthetically superior decoding. Different from the conventional autoencoder fashion, a dual-space latent representation is devised in this paper, in which a compressor composed of two independent encoding backbones is considered to extract expressive shape latents from distinct latent spaces. At the decoding side, a diffusion-based generator is devised to produce high-quality reconstructions by considering the shape latents as guidance to stochastically denoise the noisy point clouds. Experiments demonstrate that the proposed Diff-PCC achieves state-of-the-art compression performance (e.g., 7.711 dB BD-PSNR gains against the latest G-PCC standard at ultra-low bitrate) while attaining superior subjective quality. Source code will be made publicly available.<|reference_end|>
@article{liu2024diff-pcc:,
    title={Diff-PCC: Diffusion-based Neural Compression for 3D Point Clouds},
    author={Kai Liu and Kang You and Pan Gao},
    journal={arXiv preprint arXiv:2408.10543},
    year={2024},
    archivePrefix={arXiv},
    eprint={2408.10543},
    primaryClass={cs.CV cs.AI eess.IV}
}