The Image component can display an image given a src path as an argument.
This could either be a local path from the assets folder or an external link.
Image composes a box and can be styled simlarly.
You can also pass a PIL image object as the src.
A cv2 image must be covnerted to a PIL image to be passed directly to rx.image as a State variable, or saved to the assets folder and then passed to the rx.image component.
To let a user upload an image to your app check out the upload docs.