Layer 1 filter visualization [go to non-javascript version]
The color difference is minor. Please look at the figure carefully when toggling :)
Pretrained VGGNet
Yuting Zhang, Kibok Lee, Honglak Lee, “Augmenting Supervised Neural Networks with Unsupervised Objectives for Large-scale Image Classification”, The 33rd International Conference on Machine Learning (ICML), 2016.