Image processing for noise reduction

Details Image processing for noise reduction Image processing for noise reduction

1996-06-20

1998-01-13

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Absorption

382130, 382132, G01N 2304

Patent

active

057086931

ABSTRACT:
An image processing method includes multi-resolution decomposition to decompose an input image into frequency-band images, which are subsequently filtered according to an order statistics filtering. Preferably, a finite impulse response median hybrid is employed. The filtered frequency-band images are synthesized to form the filtered output image.

REFERENCES:
patent: 5367155 (1994-11-01), Colditz et al.
patent: 5417215 (1995-05-01), Evans et al.
patent: 5461655 (1995-10-01), Vuylsteke et al.
"A New Case of Detail Preserving Filters for Image Processing", Ari Nieminen, Pekka Heinonen, Yrjo Neuvo, IEEE Transactions of Pattern Analysis and Machine Intelligence, vol. PAMI-9, No. 1, Jan. 1997.
"Order Statistics In Digital Image Processing", Joannis Pitas and Anastasios N. Venetsanopoulos, Proceedings of the IEEE, vol. 80, No. 12, Dec. 1992.
"A Generalization of Median Filtering Using Linear Combinations of Order Statistics", Alan C. Bovik, Thomas S. Huang, David C. Munson, Jr., IEEE Transactions on Acoustics, Speech and Signal Processing, Voo. ASSP-31, No. 6, Dec. 1983.
"Image Filtering Using Multiresolution Representations" S. Raganath, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 13, No. 5, May 1991, pp. 426-440.

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