Title
NormalNet: A voxel-based CNN for 3D object classification and retrieval.
Abstract
A common approach to tackle 3D object recognition tasks is to project 3D data to multiple 2D images. Projection only captures the outline of the object, and discards the internal information that may be crucial for the recognition. In this paper, we stay in 3D and concentrate on tapping the potential of 3D representations. We present NormalNet, a voxel-based convolutional neural network (CNN) designed for 3D object recognition. The network uses normal vectors of the object surfaces as input, which demonstrate stronger discrimination capability than binary voxels. We propose a reflection–convolution–concatenation (RCC) module to realize the conv layers, which extracts distinguishable features for 3D vision tasks while reducing the number of parameters significantly. We further improve the performance of NormalNet by combining two networks, which take normal vectors and voxels as input respectively. We carry out a series of experiments that validate the design of the network and achieve competitive performance in 3D object classification and retrieval tasks.
Year
DOI
Venue
2019
10.1016/j.neucom.2018.09.075
Neurocomputing
Keywords
Field
DocType
3D object classification,3D object retrieval,Convolutional neural network,Network fusion
Voxel,Pattern recognition,Convolutional neural network,Artificial intelligence,Mathematics,Binary number,Cognitive neuroscience of visual object recognition,3d vision
Journal
Volume
ISSN
Citations 
323
0925-2312
8
PageRank 
References 
Authors
0.49
24
5
Name
Order
Citations
PageRank
Cheng Wang111829.56
Ming Cheng25413.93
Ferdous Sohel35510.97
M. Bennamoun43197167.23
Jonathan Li5798119.18