Is there a standard industry term for this technique in graphic illustration?:
There’s a photo of the Sgt. Pepper’s Lonely Hearts Club Band album cover; underneath is a sort-of reproduction of the photo showing only outlines of the characters with numbers in their heads; underneath is an identifying list that matches numbers with characters.
Examples:
Sgt. Pepper:
Particularly helpful–Bob and Ray:
http://www.bobandray.com/albums/classic1.html
Is this called a photo-silhouette index or something like that?