Question regarding the functionality

[dfroze]

Hi, I am a beginner to this so there are still some things that I don't understand.
Regarding the conv2d, how are the filters set?
I've found in code the way they are created:
W_conv1 = weight_variable([5, 5, 1, 48])
W_conv2 = weight_variable([5, 5, 48, 64])
W_conv3 = weight_variable([5, 5, 64, 128])
But how are the weights/filters set in them? Are they set with some default or modified during the training? How can I find a list of the weight associated with the filters (if I didn't understand wrong)?
I've looked for tutorials but could not find a clear response.

Thank you in advanced
P.S. yes, this is not an issue but more of a question, sorry if I didn't respect the protocol