The Library of Congress, Contracts and Logistics Services, 1701 Brightseat Road, Landover, MD 20785

D -- COMBINED COLOR DIGITAL FILES -- POTENTIAL SOURCES SOUGHT DUE 112098 POC Helen S. Mathura, Contracting Officer WEB: The Library of Congress, http://www.loc.gov. Market Survey/Request for Information. The Library of Congress seeks sources and information concerning technologies available for creating color digital image files from grayscale digital image files. Approx. 1850 black-and-white glass plate negatives produced by Russian photographer Sergei M. Prokudin-Gorskii from 1909-1912 show three views of the same scene exposed at one-second intervals with each view photographed separately through blue, red, and green filters. Prokudin-Gorskii projected the images in positive form onto a wall using colored lights (and later prisms) to create the effect of a color image. The Library is currently investigating recreating this effect in digital form. The Library would provide digital images made from the original 3" x 9" glass plates at approximately 500 dpi (1500 x 4500 pixels)in TIFF format at 8-bits-per-pixel grayscale. Specific requirements for the images include: (1) output of color digital images at 24-bits-per-pixel RGB-mode image files in TIFF format; (2) the transparencies and prints would need to be rendered to appear to be naturally colored (i.e., landscapes with green grass and blue sky, natural skin tones) utilizing tonal information and variations in the negatives, (3) the alignment of the images is to be a precise as possible given that the three images may vary slightly in size and/or tilt and that there are no registration markings within or outside the image to assist in alignment. It is also desirable that there be the capability to create further reproductions from the RGB digital files, i.e. prints and transparancies. Some sample digital images have been made using photo editing software to assign blue, yellow, and red to the three images and superimposing them in registration. Printed image samples from this collection may be found in: PHOTOGRAPHS FOR THE TSAR: THE PIONEERING COLOR PHOTOGRAPHY OF SERGEI MIKHAILOVICH PROKUDIN-GORSKII COMMISSIONED BY TSAR NICHOLAS II / edited with an introd. by Robert H. Allshouse. (New York: Dial Press, 1980) This publication includes historical information about Prokudin-Gorskii's photography and projection methods, as well as information about the color reproductions in the book. An online version of an exhibition of Prokudin-Gorskii's images from 1986-7 can be accessed on the Library of Congress internet web page at: http//lcweb.loc.gov/exhibits/progor/progor.html There are two TIFF-format grayscale image files of the glass plates in negative form also available at: http://lcweb2.loc.gov/pnp/ppmsc/0080 The files are named progor1.tif and progor2.tif This market survey/request for information is for planning purposes only and shall not be construed as a Request for Proposal (RFP) or as an obligation on the part of the Government to acquire any follow-on acquisitions. The Government does not intend to award a contract on the basis of this market survey/request for information or otherwise pay for the information solicited and no entitlement to payment of direct or indirect costs or charges by the Government will ariseas a result of the submission of responses. Any subsequent solicitation will be synopsized prior to its release. All responsible parties are encouraged to respond in writing by providing sufficient technical and descriptive information/documentation, estimated time required to process each image, and pricing information. Proprietary data that contains restrictions on its release should not be submitted; it is required that the data received must be received with unlimited right to the Government. Questions concerning this market survey/request for information and written responses referencing 98R-002 may be directed to the address indicated above, Attn: Helen S. Mathura, Contracting Officer, by November 20, 1998, or faxed to: (202) 707-8611. Posted 10/14/98 (W-SN261823). (0287)

Loren Data Corp. http://www.ld.com (SYN# 0033 19981016\D-0008.SOL)