Structure and method for film grain noise reduction

Details Structure and method for film grain noise reduction Structure and method for film grain noise reduction

1997-05-15

2000-05-23

Powell, Mark R.

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

348451, 348618, 348619, H04N 718

Patent

active

060671254

ABSTRACT:
A video signal is both spatially and temporally filtered. The output video signal is temporally noise reduced in portions of the image which exhibits little or no motion, and is spatially noise reduced in portions where motion exists. This approach is particularly applicable to reducing film grain noise in video material that originates from images on photographic films, since film grain noise is more correlated spatially than temporally.

REFERENCES:
patent: 5442407 (1995-08-01), Iu
patent: 5502489 (1996-03-01), Kim
patent: 5512956 (1996-04-01), Yan
patent: 5742343 (1998-04-01), Haskell
patent: 5742344 (1998-04-01), Odaka
patent: 5742355 (1998-04-01), De Haan
patent: 5845039 (1998-12-01), Ko
"Digital Image Enhancement and Noise Filtering by Use of Local Statistics", Jong-Sen Lee, IEEE Transactions on Pattern Analysis and Machine Intelligence, Jan. 1990, vol. PAM1-2, No. 1, pp.165-168.
"Adaptive Noise Smoothing Filter For Images With Signal-Dependent Noise", Darwin T. Kuan, etc., IEEE Transactions on Pattern Analysis and Machine Intelligence, Mar. 1985, vol. PAM1-7, No. 2, pp. 165-177.
"Refined Filtering of Image Noise Using Local Statistics", Jong-Sen Lee, Computer Graphics and Image Processing, vol. 15, No. 4, Apr. 1981, pp. 380-389.
"Estimation of Images Degraded By Film-Grain Noise", F. Naderi and A. A. Sawchuk, Applied Optics, vol. 17, No. 8, Apr. 15, 1978, pp. 1228-1237.

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