Tips Tricks 20 - Understanding transfer learning for different size and channel inputs
Code generated in the video can be downloaded from here:
https://github.com/bnsreenu/python_fo...
The input to the Vgg 16 model is 224x224x3 pixels images.
The Kernel size is 3x3 and the pool size is 2x2 for all the layers.
If our image size is different, can we still use transfer learning?
The answer is YES.
Input image size does not matter as the weights are associated with the filter kernel size. This does not change based on the input image size, for convolutional layers.
The number of channels does matter, as it affects the number of weights for the first convolutional layer. We can still use transfer learning by copying weights for the first channels from the original model and then filling the additional channel weights with the mean of existing weights along the channels.
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