I have many tools at my disposal to modify or fix images from a variety of sources.
If the images a not on the computer all ready I can scan images, negatives and
transparencies or copy the work photographically. Once in the computer I can even
recreate parts of images that have been loosed either by modifying existing images
or creating them from scratch in 3d or drawing the missing image. Basically so long
that you know what you want the missing parts of the image to look like I can create
it although this could be a time consuming and costly process. You may be surprised
what can be done relatively easily.
I challenge you to find any images that have been fixed, their are many of them.
Most of my image restoration work has been recreating missing parts from the image pair to create 3d photographs. This has been a time consuming problem but over the hundreds of images I have altered I have build very effective strategies.