Slices photo contact sheet images containing thumbnail photos into individual image files. https://medium.com/@hiranya/go-image-slicer-a-tool-to-slice-photo-contact-sheets-d56dd3359253
Find the executable binaries for Linux/386, Mac OSX (Darwin+)/386 and Windows/386 environments in the binaries directory.
./go-image-slicer-mac-386 -file ContactSheet-001.jpg -hslices 9 -vslices 5