hub.get_num_image_channels

Returns expected num_channels dimensions of an image input.

hub.get_num_image_channels(
    module_or_spec, signature=None, input_name=None
)

This is for advanced users only who expect to handle modules with image inputs that might not have the 3 usual RGB channels.

Args
`module_or_spec`	a Module or ModuleSpec that accepts image inputs.
`signature`	a string with the key of the signature in question. If None, the default signature is used.
`input_name`	a string with the input name for images. If None, the conventional input name `images` for the default signature is used.

Returns
An integer with the number of input channels to the module.

Raises
`ValueError`	If the channel information is missing or malformed.

Args