Digital Color Rendering
Due to the difficulty in reproducing prints of sufficient quality from the negatives, only some hundred were used for exhibits, books and scholarly articles after the Library of Congress acquired them. The best-known is perhaps the 1980 coffee table book Photographs for the Tsar: The Pioneering Color Photography of Sergei Mikhailovich Prokudin-Gorskii Commissioned by Tsar Nicholas II, where the photos were combined yellow, magenta and cyan prints made from the negatives. It was only with the advent of digital image processing that multiple images could be quickly and easily combined into one. The Library of Congress undertook a project in 2000 to make digital scans of all the photographic material received from Prokudin-Gorsky's heirs and contracted with the photographer Walter Frankhauser to combine the monochrome negatives into color images. He created 122 color renderings using a method he called digichromatography and commented that each image took him around six to seven hours to align, clean and color-correct. In 2001, the Library of Congress produced an exhibition from these, The Empire That Was Russia: The Prokudin-Gorskii Photographic Record Recreated. The photographs have since been the subject of many other exhibitions in the area where Prokudin-Gorsky took his photos.
In 2004, the Library of Congress contracted with computer scientist Blaise Agüera y Arcas to produce an automated color composite of each of the 1902 negatives from the high-resolution digital images of the glass-plate negatives. He applied algorithms to compensate for the differences between the exposures and prepared color composites of all the negatives in the collection. As the library offers the high-resolution images of the negatives freely on the Internet, many others have since created their own color representations of the photos, and they have become a favourite testbed for computer scientists. A century after Prokudin-Gorsky explained his ambitions to the tsar, people all around the world are finally able to view his work, fulfilling his goal of showing everyone the glory of the Russian Empire.
Read more about this topic: Sergey Prokudin-Gorsky
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