Reproduce “Patch-Based Deep Autoencoder for Point Cloud Geometry Compression” on OpenResearch

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About this paper

Kang You, Pan Gao

Researchers at Nanjing University of Aeronautics and Astronautics introduce a patch-based deep autoencoder for lossy 3D point cloud geometry compression, which divides point clouds into smaller, overlapping sections for processing. This method achieves superior rate-distortion performance, particularly at low bitrates, compared to existing traditional and deep learning approaches, while ensuring uniform point distribution and lower memory usage.

Key insights

  • Decomposing point cloud compression into patch-wise operations simplifies the reconstruction problem, allowing the network to capture intricate local details more effectively with a less complex architecture.
  • The patch division process naturally augments training data, leading to faster model convergence and improved generalization by mitigating overfitting.
  • Adjusting the bottleneck size of the autoencoder directly controls the compression ratio, allowing for flexible rate-distortion trade-offs without major architectural changes.

Summary by alphaXiv.

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