You cannot make an image in an object.
Both the iPad and iPad Pro use the same size classes (Regular-Regular) for both orientations, and in xcasset you can identify images in the end by their size classes or by the type of main device (iPad vs. iPhone vs. Clock).
The only thing you can do is provide the images a little larger or fix the size of the images, and instead create some other elements with flexible width and height, such as the space between the images or elements.
As indicated by Julian, it is worth mentioning that at runtime, you can determine the type of device by checking the properties of the class UIDeviceand selecting the correct image at runtime. Apple does not support this methodology.