Recording bit extraction by calculating curvature of pixels in s

Details Recording bit extraction by calculating curvature of pixels in s Recording bit extraction by calculating curvature of pixels in s

1994-03-08

1996-03-26

Epps, Georgia Y.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369126, 369101, 250306, 250307, G11B 900

Patent

active

055027105

ABSTRACT:
An image information processing apparatus for processing image information includes a total curvature calculating unit, mean curvature calculating unit, a logical product computing unit and a median filter. A total curvature at each pixel of the image information is calculated by the total curvature calculating unit. A mean curvature at each pixel of the image information is calculated by the mean curvature calculating unit. The logical product computing unit executes computation of a logical product of outputs from the total curvature calculating unit and the mean curvature calculating unit. An output from the logical product computing unit is filtered by the median filter.

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Proceed. CVPR'86: IEEE Computer Society Conference On Computer Vision and Pattern Recognition, 22 Jun. 1986, Miami Beach, FL, USA, pp. 338-343, Saint-Marc P. Richetin M., "Structural Filtering From Curvature Information".
ICASSP'91: 1991 International Conference On Accoustics, Speech and Signal Processing, vol. 4, 14 May 1991, Toronto, Ontario, Canada, pp. 2993-2996, Greiner et al., "Speckle Reduction In Ultrasonic Imaging For Medical Applications".
Journal of Applied Physics, vol. 71, No. 4, 15 Feb. 1992, USA, pp. 1565-1578, Weisman A. D. et al. "Nonlinear Digital Filtering of Scanning-Probe-Microscopy Images by Morphological Psuedoconvolutions".

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