Index of graphics and images

I write a non-fiction book with a lot of graphics and images. The publisher wants an index of all images. The images are named like ((photo 1: track in the woods))
I find all images by using the search function, but no possibility to summarize all the images like:

((Photo: tracking in the woods))
((Photo: children))
((grahic: possibilities to play))

Is there a function in scrivener to create such an index?