3D Shape Segmentation with Projective Convolutional Networks

Evangelos Kalogerakis; Melinos Averkiou; Subhransu Maji; Siddhartha Chaudhuri

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arXiv · 1612.02808

3D Shape Segmentation with Projective Convolutional Networks

Evangelos Kalogerakis·Melinos Averkiou·Subhransu Maji·Siddhartha Chaudhuri

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Abstract

This paper introduces a deep architecture for segmenting 3D objects into their labeled semantic parts. Our architecture combines image-based Fully Convolutional Networks (FCNs) and surface-based Conditional Random Fields (CRFs) to yield coherent segmentations of 3D shapes. The image-based FCNs are used for efficient view-based reasoning about 3D object parts. Through a special projection layer, FCN outputs are effectively aggregated across multiple views and scales, then are projected onto the 3D object surfaces. Finally, a surface-based CRF combines the projected outputs with geometric consistency cues to yield coherent segmentations. The whole architecture (multi-view FCNs and CRF) is trained end-to-end. Our approach significantly outperforms the existing state-of-the-art methods in the currently largest segmentation benchmark (ShapeNet). Finally, we demonstrate promising segmentation results on noisy 3D shapes acquired from consumer-grade depth cameras.

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Evangelos Kalogerakis, Melinos Averkiou, Subhransu Maji, Siddhartha Chaudhuri. 2016-12-08. 3D Shape Segmentation with Projective Convolutional Networks. https://arxiv.org/abs/1612.02808

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