tfg.io.exr.channels_to_ndarray

Copies channels from an OpenEXR.InputFile into a numpy array.

tfg.io.exr.channels_to_ndarray(
    exr, channel_names
)

If the EXR image is of size (width, height), the result will be a numpy array of shape (height, width, len(channel_names)), where the last dimension holds the channels in the order they were specified in channel_names. The requested channels must all have the same datatype.

Args
exr	An OpenEXR.InputFile that is already open.
channel_names	A list of strings naming the channels to read.

Returns
A numpy ndarray.

Raises
ValueError	If the channels have different datatypes.
RuntimeError	If a channel has an unknown type.