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• W2944516423 abstract "Point cloud is a fundamental 3D representation which is widely used in real world applications such as autonomous driving. As a newly-developed media format which is characterized by complexity and irregularity, point cloud creates a need for compression algorithms which are more flexible than existing codecs. Recently, autoencoders(AEs) have shown their effectiveness in many visual analysis tasks as well as image compression, which inspires us to employ it in point cloud compression. In this paper, we propose a general autoencoder-based architecture for lossy geometry point cloud compression. To the best of our knowledge, it is the first autoencoder-based geometry compression codec that directly takes point clouds as input rather than voxel grids or collections of images. Compared with handcrafted codecs, this approach adapts much more quickly to previously unseen media contents and media formats, meanwhile achieving competitive performance. Our architecture consists of a pointnet-based encoder, a uniform quantizer, an entropy estimation block and a nonlinear synthesis transformation module. In lossy geometry compression of point cloud, results show that the proposed method outperforms the test model for categories 1 and 3 (TMC13) published by MPEG-3DG group on the 125th meeting, and on average a 73.15% BD-rate gain is achieved." @default.
• W2944516423 created "2019-05-16" @default.
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• W2944516423 date "2019-04-17" @default.
• W2944516423 modified "2023-10-03" @default.
• W2944516423 title "Deep AutoEncoder-based Lossy Geometry Compression for Point Clouds" @default.
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• W2944516423 doi "https://doi.org/10.48550/arxiv.1905.03691" @default.
• W2944516423 hasPublicationYear "2019" @default.
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