title: vgg_19 slim model a frozen.pb graph?
body: <p>I downloaded the vgg_19_2016_08_28.tar.gz and extracted a vgg-19.pb graph. I am using this for tf2onnx. However, this seems to have some dynamic parameters and hence tf2onnx if failing. I want to check if the vgg-19.pb is a frozen graph, if not how can I get a frozen vgg_19.pb graph?</p>
  
  <p>Same question for tensorflow_inception_graph - inception_v3_2016_08_28.tar.gz</p>
  
  <p>Same question for resnet - resnet_v1_50_2016_08_28.tar.gz </p>
  
  <p>All downloaded from here - <a href="https://github.com/tensorflow/models/tree/master/research/slim#pre-trained-models" rel="nofollow noreferrer">https://github.com/tensorflow/models/tree/master/research/slim#pre-trained-models</a></p>