Image analysis – Image enhancement or restoration
Reexamination Certificate
2007-10-11
2011-12-27
Desire, Gregory M (Department: 2624)
Image analysis
Image enhancement or restoration
C359S722000, C359S708000
Reexamination Certificate
active
08086058
ABSTRACT:
An extended depth of field is achieved by a computational imaging system that combines a multifocal imaging subsystem for producing a purposefully blurred intermediate image with a digital processing subsystem for producing a recovered image having an extended depth of field. The multifocal imaging system preferably exhibits spherical aberration as the dominant feature of the purposeful blur. A central obscuration of the multifocal imaging subsystem renders point-spread functions of object points more uniform over a range of object distances. An iterative digital deconvolution algorithm for converting the intermediate image into the recovered image contains a metric parameter that speeds convergence, avoids stagnations, and enhances image quality.
REFERENCES:
patent: 6229649 (2001-05-01), Woods et al.
patent: 6445415 (2002-09-01), Olsson
patent: 6493143 (2002-12-01), Kato
patent: 6525302 (2003-02-01), Dowski, Jr. et al.
patent: 6536898 (2003-03-01), Cathey, Jr.
patent: 6842297 (2005-01-01), Dowski, Jr.
patent: 6873733 (2005-03-01), Dowski, Jr.
patent: 6911638 (2005-06-01), Dowski, Jr. et al.
patent: 6927922 (2005-08-01), George et al.
patent: 6940649 (2005-09-01), Dowski, Jr.
patent: 7025454 (2006-04-01), Cathey, Jr.
patent: 7031054 (2006-04-01), Cathey, Jr. et al.
patent: 7088419 (2006-08-01), Dowski, Jr. et al.
patent: 7106510 (2006-09-01), Dowski, Jr.
patent: 7336430 (2008-02-01), George et al.
patent: 7511895 (2009-03-01), George et al.
patent: 7554750 (2009-06-01), George et al.
patent: 7593161 (2009-09-01), George et al.
patent: 7898746 (2011-03-01), George et al.
patent: 2003/0228053 (2003-12-01), Li et al.
patent: 2005/0105800 (2005-05-01), Periaswamy et al.
patent: 3905619 (1989-08-01), None
patent: 280588 (1988-08-01), None
patent: 623209 (1994-11-01), None
patent: 3165672 (1991-07-01), None
patent: WO 88/01069 (1988-02-01), None
patent: WO 93/14384 (1993-07-01), None
patent: WO 03/052465 (2003-06-01), None
Gull, S.F.; Skilling, J.; , “Maximum entropy method in image processing,” Communications, Radar and Signal Processing, IEE Proceedings F , vol. 131, No. 6, pp. 646-659, Oct. 1984.
Bursch, S.F. ,et al, Image Restoration by a Powerful Maximum Entropy Method, Computer Vision, Graphics, and Image Processing, vol. 23, pp. 113-128 (1983).
OptiPro Systems, Inc., Home Page and OptiProSX50 Technical Data, Printout from web site at 222.optipro.com (2001 ).
Ojeda-Castaneda J. et al., Line-spread function relatively insensitive to defocus, Optics Letters, vol. 8, No. 8, pp. 458-460 (1983).
Soroko, L. et al., Axicons and Meso-Optical Imaging Devices, Progress in Optics XXVII, E. Wolf ed. (Elsevier, New York)pp. 111-160(1989).
Sochacki, J. et al., Phase retardation of the uniform-intensity axilens, Optics Letters, vol. 17, No. 1, pp. 7-9 (1992).
Sochacki, J. et al., Nonparaxial design of generalized axicons, Applied Optics, vol. 31, No. 25, pp. 5326-5330 (1992).
Steinert, R. et al., A Prospective, Randomized, Double-masked Comparison of a Zonal-Progressive Multifocal Intraocular Lens and a Monofocallntraocular Lens, Ophthalmology, vol. 99, No. 6, pp. 853-861 (1992).
Luneburg, R., Mathematical Theory of Optics, University of California Press, Berkeley and Los Angeles, pp. 86-88 (1964).
Dwight, H., Tables of Integrals and Other Mathematical Data, (Macmillan, New York), Eq. (380.001), pp. 70-71 (1947).
Wolfram, S., Mathematical Software 4.0 Help Browser, 3.8.1 Curve Fitting, Wolfram Research, Champaign, III. (1999).
QED Technologies, LLC, Information Brief, Magnetorheological Finishing (MRF): A Production-Ready Technology, Convergence, Mar./Apr. 1998.
Hunt, B., The Application of constrained Least Squares Estimation to Image Restoration by Digital Computer, IEEE Transaction on computers, vol. C-22(9), pp. 805-812 (1973).
Gonzalez, R., et al., Digital Image Processing (Addison-Wesley, Reading, Mass.) pp. 218-221 (1992).
Gull, S., et al., Maximum entropy method in image processing, IEE Proceedings, vol. 131, PI. F., No. 6, pp. 646-659 (1984).
Wanli Chi and Nicholas George, “Computational Imaging with the Logarithmic Asphere: theory”, J. Opt Soc. Am A/vol. 20 No. 12/ Dec. 2003, pp. 2260-2273.
John C. Russ, “The Image Processing Handbook, Second Edition”, Chapter 5, Processing Images in Frequency Space, Processing 1995; CRC Press Inc; pp. 327-339.
Wanli Chi and Nicholas George, “Electronic imaging using a logarithmic asphere”, Jun. 15, 2001,vol. 26, No. 12/ pp. 875-877, OPTICS Letters.
Nicholas George and Wanli Chi, “Extended depth of field using a logarithmic asphere”, J. Opt. A: Pure Appl. Opt. 5 (2003) S157.
Wanli Chi and Nicholas George, “Integrated imaging with a centrally obscured logarithmic asphere”, ARC, Preprint submitted to Elsevier Science, Aug. 16, 2004 pp. 1.
G. Hausler, “A Method to increase the depth of focus by two step image processing”, Optisches Institut der Techmnischen Univesitat Berlin, Berlin, Germany, Jul. 17, 1972, pp. 38-42.
Jorge Ojeda-Castaneda and L.R. Berriei-Vaidos, “Zone plate for arbitrarily high focal depth”, Applied Optics, vol. 29, No. 7, Mar. 1, 1990, pp. 994-997.
RJ. Pieper and A. Korpei, “Image processing for extended depth of field”, Applied Optics, May 15, 1983, vol. 22, No. 10, pp. 1449-1453.
Ting-Chung Poon and Masoud Motamedi, “Optical/digital incoherent image processing for extended depth of field”, Applied Optics, vol. 26, No. 21, Nov. 1, 1987, pp. 4612-4615.
Edward R. Dowski, Jr, and W. Thomas Cathey, “Extended depth of field through wave-front coding”, Applied Optics, Apr. 10, 1995, vol. 34, No. 11, pp. 1859-1866.
Joseph Van Der Gracht, Edward R Dowski, Jr., W. Thomas Cathey, John P. Bowen, “Aspheric optical elements for extended depth of field imaging”, SPIE vol. 2537/279-288, 1995.
Sherif S. Sherif, W. Thomas Cathey, and Ed R. Dowski, “Phase plate to extend the depth of field of incoherent hybrid imaging systems”, Applied Optics, May 1, 2004, vol. 43, No. 13, p. 2709.
Hans B. Wach, Edward R. Dowski, Jr, and W. Thomas Cathey, “control of chromatic focal shift through wave-front coding”, Applied Optics, Aug. 10, 1998, vol. 37, No. 23, p. 5359.
Nicholas George, “Extended depth of field imaging”, Version 5/3102, pp. 1-12.
Sara C. Tucker, W. Thomas Cathey, and Edward R. Dowski, Jr., “Extended depth of field and aberration control of inexpensive digital microscope systems”, Imaging Systems Laboratory, Department of Electrical Engineering, May 24, 1999 vol. 4, No. 11, 0ptics Express, pp. 467-474.
Chi Wanli
George Nicholas
Allison Andrae S
Aptina Imaging Corporation
Desire Gregory M
Kramer Levin Naftalis & Frankel LLP
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