System incorporating feature-oriented signal enhancement using s

Details System incorporating feature-oriented signal enhancement using s System incorporating feature-oriented signal enhancement using s

1993-04-16

1997-07-01

Zanelli, Michael

Boots, shoes, and leggings

382266, G06K 940, G06K 944

Patent

active

056445130

ABSTRACT:
A method and apparatus for enhancing signals such as images, speech, remotely sensed data, medical, tactile, radar and audio. It proceeds by the construction of certain discrete approximations to certain nonlinear time-dependent partial differential equations. These approximations preserve the variation of the discrete solution as discrete time increases for one space dimension. The approximate solutions satisfy certain maximum principles in one and two dimensions. Thus, the method enhances images and other general signals without being plagued by the phenomenon of ringing near edges and other features, or by smearing of these edges and other features, typical of the prior art. As discrete time increases the signal is enhanced. The process may reach steady state, but for some applications, the dynamical procedure is important. The method is fast, requiring only local operations on a special purpose computer described herein.

REFERENCES:
patent: 4752916 (1988-06-01), Loewenthal
patent: 4754282 (1988-06-01), Edelblute et al.
patent: 4783840 (1988-11-01), Song
patent: 4852068 (1989-07-01), Track
patent: 4855943 (1989-08-01), Lewis
patent: 4910716 (1990-03-01), Kirlin et al.
patent: 4918633 (1990-04-01), Sullivan
patent: 4945502 (1990-07-01), Kwon et al.
patent: 5185809 (1993-02-01), Kennedy et al.
"Nonlinear Image Restoration: What We Have Learned," SPIE, vol. 264, Applications of Digital Image Processing to Astronomy, 1980, pp. 148-155, Donald C. Wells.
"Image Enhancement," Fundamentals in Computer Visison, ed. O.J. Fougeros, 1983, pp. 56-57, Grunlund, G.M., H. Knutsson and R. Wilson.
"Restoring With Maximum Likelihood and Maximum Entropy," J. Opt. Soc. Am. 62, 1972, 511-518, B.R. Fieden.
"Digital Removal of Random Media Image Degradation by Solving the Diffusion Equation Backwards in Time," Siam J. Numer. Anal., vol. 15, No. 2, 1978, pp. 344-367, A. Carasso, J. Sanderson, J. Hyman.
"Theory of Edge Detecting," Proc. Roy. Soc. London, B.207 (1980) pp. 187-2170), Marr, D. and Hildreth, E.
"Digital Step Edges from Zero Crossings of Second Directional Derivatives," IEEE Transac. P.A.M.I., VI, PBM-6, No. 1 (Jan. 1981) pp. 58-68, R. Haralich.
"Images: Numerical Analysis of Singularities and Shock Filters," Computer Science Dept., California Inst. of Tech., Pasadena, No. 5250:TR, L. Rudin (1987).
"Digital Image Restoration," Prentice-Hall, Englewood Cliffs, N.J., 1977, H.C. Andres and B.R. Hunt.
A. I. Volpert, "The Spaces of BV and Quasilinear Equations," Math. USSR-Sbornik, V. 73 (115), 1967, No. 2, pp. 225-267.
UCLA CAM Report 89/02 (Jan. 1989).

Affiliated with

Also associated with

Rating

System incorporating feature-oriented signal enhancement using s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System incorporating feature-oriented signal enhancement using s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System incorporating feature-oriented signal enhancement using s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-602759