C4W4 Art Generation - need help at 5.5.1 - Compute Content Cost

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

Hi! I am stack to 5.5.1 - Compute Content Cost. In the code there are no ‘YOUR CODE STARTS/ENDS HERE’ lines. But I guess I should complete the code anyway.
I need help in how to retrieve the given layer into a_C.
I could only imagine two options, both problematic:

  1. vgg_model_outputs(preprocessed_content) - This perhaps puts ALL (STYLE_LAYERS + content_layer) outputs into a_C. Perhaps fine for Style Cost, but for the Content Cost I only need one layer?!
  2. I experimented with vgg_model_outputs(preprocessed_content).get_layer(“block5_conv4”).output - but then I get an errors message (‘list’ object has no attribute ‘get_layer’)

A similar problem applies to how to get a_G. Furthermore, I could not figure out how to define a_G that would be working with both the ContentCost (one layer needed) and StyleCost (many layers needed)?

smth like compute_content_cost(a_C[“block5_conv4”], a_G[“block5_conv4”]) does not work either.
Could you pls help a bit here? Thank you!

2

Hey, 5.5.1 is not to be edited or have any code added to it, it has already been completed for you. You will need to add the code in Exercise 6 further down.

3

Thank you, works fine!