By Kelly Crawford, Smithsonian Gardens on Mon, 08/18/2014 - 11:30
Here at Smithsonian Gardens we are celebrating American Archives Month throughout October. In August 2013, we participated in the first of a series of pilot projects, funded by the Smithsonian’s Digitization Program Office, to create high resolution images of archival, museum and library collection items at a rapid speed. The pilot project included a week-long open house for Smithsonian staff, fellows, interns, volunteers and contractors, to showcase the rapid digitizating of over 900 historic glass-plate negatives from the Thomas Sears Collection at the Archives of American Gardens. The open house demonstrated all stages of digitizating a glass-plate negative collection, from moving each fragile plate in a custom carrier, capturing it, and performing quality control on the resulting image, to making the digitized output accessible to the public online. The overall process involved an outside contractor performing the image capture and image processing and two staff members from the Archives of American Gardens prepping the images, handling the glass-plate negatives, ingesting the images into the Smithsonian’s Digital Asset Management System and linking them to pre-existing catalog records in the Smithsonian’s online catalog, SIRIS.
The 8×10 negatives, which had previously been digitized in the 1990s on a video disc at 640 pixels on the image’s longest side, were obviously pixelated in SIRIS. New scans of the negatives created by the vendor through rapid capture were digitized with an 80 megapixel camera. The quality of the new scans, measured at roughly 10,000 pixels on the longest side, ensures that the Archives will likely never have to scan the glass plates again. Rapid capture is not new, but the tools to measure the quality that can be achieved through rapid digitization are. For any large scale digitization projects of like materials, the Archives of American Gardens hopes to secure funding to digitize archival images through the rapid capture process instead of its current method of digitizing on a flatbed scanner.
To put it into concrete terms, the time that it takes to scan one image on a flatbed scanner is roughly 12 to 15 minutes. To digitize one image using rapid capture, it takes less than one minute. Rapid capture has opened our eyes to a highly efficient method that enables an entire collection to be digitized in a quantifiable time frame. The piece of the puzzle that remains to be addressed is the time-intensive process of cataloging that is needed to make the collections readily searchable online.
Background on Thomas Sears
Thomas Sears graduated with a degree in landscape architecture from Harvard University’s Lawrence Scientific School in 1906, where he also studied photography. He worked for Olmsted Brothers Landscape Architects in the 1910s out of their Brookline, Massachusetts office before establishing his own landscape design office.
A set of images scanned during the rapid capture digitization project included the Edgewood estate in Baltimore, Maryland, photographed by Thomas Sears and designed by Sears and Wendell of Philadelphia.
Learn more about the Thomas Sears Collection.
Click here to learn more about the Archives of American Gardens.
(Reposted with permission from our friends at the Smithsonian Gardens blog)