Image processing apparatus with adjustable low-pass optical filt

Details Image processing apparatus with adjustable low-pass optical filt Image processing apparatus with adjustable low-pass optical filt

1995-06-07

1996-12-03

Garber, Wendy

Television

Camera, system and detail

Optics

348231, H04N 5225

Patent

active

055813011

ABSTRACT:
An image processing apparatus capable of thinning data obtained by a solid-state image pickup device having a certain resolution. The apparatus includes an optical low-pass filter mounted in front of the solid-state image pickup device in an optical focusing system, the low-pass filter having an alterable optical transmittance characteristic relative to a spatial frequency, wherein the optical transmittance characteristic of the optical low-pass filter is changed between cases where all pixels of the solid-state image pickup device are output and cases where pixel data is thinned.

REFERENCES:
patent: 3784734 (1974-01-01), Watanabe et al.
patent: 3821795 (1974-06-01), Okano
patent: 4605956 (1986-08-01), Lok
patent: 4743100 (1988-05-01), Nakada et al.
patent: 4795236 (1989-01-01), Ise
patent: 4805028 (1989-02-01), Nishioka et al.
patent: 5029010 (1991-07-01), Shiraishi

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