Title
Sample Efficient Semantic Segmentation using Rotation Equivariant Convolutional Networks.
Abstract
We propose a semantic segmentation model that exploits rotation and reflection symmetries. We demonstrate significant gains in sample efficiency due to increased weight sharing, as well as improvements in robustness to symmetry transformations. The group equivariant CNN framework is extended for segmentation by introducing a new equivariant (G-u003eZ2)-convolution that transforms feature maps on a group to planar feature maps. Also, equivariant transposed convolution is formulated for up-sampling in an encoder-decoder network. To demonstrate improvements in sample efficiency we evaluate on multiple data regimes of a rotation-equivariant segmentation task: cancer metastases detection in histopathology images. We further show the effectiveness of exploiting more symmetries by varying the size of the group.
Year
Venue
Field
2018
arXiv: Computer Vision and Pattern Recognition
Multiple data,Equivariant map,Pattern recognition,Convolution,Segmentation,Computer science,Robustness (computer science),Planar,Artificial intelligence,Homogeneous space
DocType
Volume
Citations 
Journal
abs/1807.00583
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jasper Linmans100.68
Jim Winkens200.34
Bastiaan S. Veeling311.02
Taco Cohen422817.82
Max Welling54875550.34