conv5 pooling

[taraspiotr]

Hi!
I was wondering what was the motivation behind performing pooling after already downsampled layer here:

TernausNet/unet_models.py

Line 279 in 85ade9f

center = self.center(self.pool(conv5))

Did you test if it was improving score compared to using downsampling conv layer one more time or simply removing this bottom layer and having conv5 in bottleneck?