I don't know what it's called
Visual Memory We all have the ability, but some are better than others, like those with Photographic memory, who are often driven insane by it. So a little is good, alot can be harmful.:-)
I remember in High School they gave us Readak( speed reading) course training. Part of the training was remembering by creating an image in your head. So they would give us a list of things to memorize, and we were supposed to make an image, then just picture the image to rattle off the list. Like "coffee, car, bread, dog, child, sun" would be made into a mental image
of a "dog driving a car drinking coffee with a child in the back seat eating bread on a sunny day".
Now you know how I got this way. :-)