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Proceedings Paper

Photographic scanner with integrated charge-coupled device
Author(s): S. Boyd; Selim Bencuya; R. Daniel McGrath; stephen saylor; William K. Smyth
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Paper Abstract

A scanner with an integrated 2048-element-per-line color charge-coupled device (CCD) image sensor has been developed for scanning 4" x 6" photographs at up to 500 dots/in resolution. Integration of the three sensors with color filters on a single chip greatly simplifies the scanner system design. The scanner system includes light-source optics mechanical drive CCD drive electronics digital signal processing (DSP) electronics and controlling hardware/firmware. A novel selfcalibration scheme provides brightness and uniformity correction to the scanned image data in real time. Also in real time DSP circuits perform sharpening and color processing allowing for fast high quality scans of photographic images. Prints of up to 4" x 6" are scanned at 500 dots/in resolution and 24-bit color in less than 10 seconds. Application areas include graphic arts technical and scientific imaging insurance and real estate. 1.

Paper Details

Date Published: 12 August 1992
PDF: 11 pages
Proc. SPIE 1656, High-Resolution Sensors and Hybrid Systems, (12 August 1992); doi: 10.1117/12.135910
Show Author Affiliations
S. Boyd, Polaroid Corp. (United States)
Selim Bencuya, Polaroid Corp. (United States)
R. Daniel McGrath, Polaroid Corp. (United States)
stephen saylor, Polaroid Corp. (United States)
William K. Smyth, Polaroid Corp. (United States)

Published in SPIE Proceedings Vol. 1656:
High-Resolution Sensors and Hybrid Systems
Morley M. Blouke; Winchyi Chang; Laurence J. Thorpe; Rajinder P. Khosla, Editor(s)

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