Learning Descriptor Networks for 3D Shape Synthesis and Analysis
2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition(2018)
摘要
This paper proposes a 3D shape descriptor network, which is a deep convolutional energy-based model, for modeling volumetric shape patterns. The maximum likelihood training of the model follows an "analysis by synthesis" scheme and can be interpreted as a mode seeking and mode shifting process. The model can synthesize 3D shape patterns by sampling from the probability distribution via MCMC such as Langevin dynamics. The model can be used to train a 3D generator network via MCMC teaching. The conditional version of the 3D shape descriptor net can be used for 3D object recovery and 3D object super-resolution. Experiments demonstrate that the proposed model can generate realistic 3D shape patterns and can be useful for 3D shape analysis.
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关键词
descriptor networks,3D shape synthesis,3D shape descriptor network,deep convolutional energy-based model,volumetric shape patterns,maximum likelihood training,synthesis scheme,mode shifting process,3D generator network,3D shape descriptor net,3D object recovery,3D object super-resolution,realistic 3D shape patterns,3D shape analysis
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