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.
A collection of Photographic Imaging Technique (PIT) showcase the Indiana University's application of PIT on selected historic shipwreck sites in California, the Florida Keys and the Dominican Republic.
Below is a composite computer image of the Winch Hole utilizing PIT. 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.