How can I use a pre-trained neural network with grayscale images?

Question

I have a dataset containing grayscale images and I want to train a state-of-the-art CNN on them. I\'d very much like to fine-tune a pre-trained model (like the ones here).

Answer 1

why not try to convert a grayscale image to a RGB image?

tf.image.grayscale_to_rgb(
    images,
    name=None
)