Scanning albums is not an easy task, since the extraction of actual photographs within scans is usually very tedious.
This tool allows you to scan as much as you can fit into your scanner and then semi-automatedly extract the contained photographs.
The tool also allows to extract scans of multiple single photographs (i.e. without album)
Find a full documentation here: http://dominik-ruess.de/scannerExtract/
Note: The scanning itself is the most time consuming part.
"Plot Extractor" allows manual extraction of point coordinates from an image. X and Y axes are manually defined by two points each. Axes need not be orthogonal and can be rotated compared to the image edges.