Calibration of digital cameras

Details Calibration of digital cameras Calibration of digital cameras

1998-04-17

2000-11-14

Britton, Howard

Television

Holographic

Color tv

354 59, 354287, 354295, 250494, 250495, H04N 1500

Patent

active

061477028

ABSTRACT:
A lens cover for a digital camera provides a diffused light source for calibration purposes which approximates a flat field light source. In this way, digital cameras may be calibrated in the field under user control. The diffuser may be in the form of a light transmissive hologram. The hologram may have formed thereon a plurality of light diffusing shapes. The camera may be calibrated either by itself or advantageously when connected to a host computer. The user may be prompted through the calibration sequence.

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PCT International Search Report, PCT/US99/08035.
Stephen Wadle et al., "Holographic Diffusers," Optical Engineering, vol. 33, No. 1, Jan. 1, 1994, pp. 213-218, XP000421283 ISSN: 0091-3286.

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