7 December 1978 A High-Resolution, High-Speed Film Scanner System Using Optically Butted Charge-Coupled Devices (CCDs)
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Abstract
The advent of solid-state linear charge-coupled devices (CCD's), as well as the recent developments in high-speed digital-computing elements, has made possible real-time processing of video image information at high data rates. An end-to-end (film transparency in to image out) mechanization of a high-resolution, high-speed film scanning system employing optically butted linear CCD's is described. The system includes a precision film scanner, a digital data transmitter that performs 2:1 differential pulse code modulation (DPCM) data compression as well as data serialization, and a digital data receiver that performs the inverse data compression algorithm. End-to-end system offset and gain correction are performed in real time on a pixel-by-pixel basis, removing objectionable artifacts caused by CCD nonuniformities. The resulting video data stream can either be viewed on a soft copy TV monitor or be read into a hard copy laser recorder. The scan spot size and pitch are less than 3 microns.
© (1978) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Richard A. Whittlesey, "A High-Resolution, High-Speed Film Scanner System Using Optically Butted Charge-Coupled Devices (CCDs)", Proc. SPIE 0149, Digital Image Processing II, (7 December 1978); doi: 10.1117/12.956681; https://doi.org/10.1117/12.956681
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