I've published a script which uses Image::Magick, File::Find, and Spreadsheet::WriteExcel to convert a list of directories containing images into spreadsheets of thumbnails with dirified filenames, including a link to a larger thumbnail. It is of course a bit different from what you need, but some of the code may be useful.

In reply to Re: Recursive image processing (with ImageMagic) by wrinkles
in thread Recursive image processing (with ImageMagic) by wvick

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