Indiana University Bloomington

Center for Underwater Science

Underwater Science

Our Research

Academic Diving Program


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Photographic Imaging Technique (PIT)

PIT utilizes readily available computer software and hardware to visually document underwater cultural and biological resources. Photographs or video images are digitized and saved as a file in the computer. Computer images are scaled, rotated, and placed into a "composite file" of the site being documented. The resulting product is a simple representation of the actual site, with excellent resolution of selected features. PIT enables site plans to be developed with minimal diving and computer time.

Gallery of Photographic Imaging Technique

  • Emerald Bay Historic Barges, Lake Tahoe, California:
    Dedicated September 23, 1994 as California's first underwater shipwreck park, the park site contains the remains of two massive barges which were abandoned in the 1920s.

  • San Pedro Underwater Archaeological Preserve, Florida Keys:
    One of the famous 1733 Spanish vessels wrecked in the Florida Keys, and among the Florida Keys oldest artificial reefs, the San Pedro was established as Florida's second underwater shipwreck park on April 1, 1989.

  • Winch Hole Historic Site, Key Largo National Marine Sanctuary, Florida Keys:
    One of the most popular scuba, snorkel, and glass bottom boat visited areas in the Florida Keys, with estimates of 1.5 million visitors per year. The site has numerous 19th century sailing vessel components, and maybe associated with the wreck of the 1887 Slobodna.

  • East National Park, Dominican Republic:
    Perhaps the most significant archaeological site in the Caribbean, the sinkhole Manantial de la Aleta is under investigation by Indiana University. The site contains rare intact artifacts from the Taino Indians who greeted Columbus upon his arrival in the New World.