Output size of pre-trained modes for super-resolution task

[cspk17]

Thank you for sharing an excellent work.
I want to apply pre-trained models to the conventional super-resolution dataset such as Set5 and evaluate the performance.
But the output size of the pre-trained modes is not scaled, i. e., the output size is equal to the input size.
How can I scale the output size of the pre-tranined model??