Image analysis – Image enhancement or restoration – Image filter
Reexamination Certificate
2008-01-15
2008-01-15
Mehta, Bhavesh M (Department: 2624)
Image analysis
Image enhancement or restoration
Image filter
C455S213000, C708S300000, C702S017000
Reexamination Certificate
active
11043276
ABSTRACT:
An adaptive filter according to one embodiment includes an N×N two-dimensional convolution, where N is an odd integer greater than one. Pixels of an image are filtered by moving the N×N kernel across the image. At each pixel location, the kernel coefficients are determined by the image pixels within the N×N region, such that the kernel coefficients may change from one pixel location to the next. Such a filter may be implemented to use a lookup table to approximate a floating-point operation.
REFERENCES:
patent: 5450216 (1995-09-01), Kasson
patent: 5594854 (1997-01-01), Baldwin et al.
patent: 5611000 (1997-03-01), Szeliski et al.
patent: 6008796 (1999-12-01), Vaswani et al.
patent: 6725174 (2004-04-01), Bouts et al.
patent: 6809740 (2004-10-01), Weed
patent: 7034885 (2006-04-01), Koyanagi et al.
patent: 2003/0081677 (2003-05-01), Segman
patent: 2003/0107582 (2003-06-01), Maeda et al.
patent: 2003/0189655 (2003-10-01), Lim et al.
patent: 2004/0052432 (2004-03-01), Lee et al.
patent: 2004/0071363 (2004-04-01), Kouri et al.
patent: 2005/0276510 (2005-12-01), Bosco et al.
Scale-Space and Edge Detection Using Anisotropic Diffusion; IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 12, No. 7 (Jul. 1990); pp. 629-639.
Adaptive Soothing: A General Tool for Early Vision; IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 13, No. 6 (Jun. 1991); Ogs. 514-529.
Division Algorithms and Implementations; IEEE Transactions on Computers, vol. 46, No. 8 (Aug. 1997); pp. 833-854.
Speckle Reducing Anisotropic Diffusion; IEEE Transactions on Image Processing, vol. 11, No. 11 (Nov. 2002); pp. 1260-1270.
Jones, D. (1999) Reciprocal Multiplication, a tutorial. XP-002362368.
Plataniotis, K.N., et al. (1998) Adaptive filters for multichannel signal processing. IEEE pp. 67-71.
Tang, P.T. Table-lookup algorithms for elementary functions and their error analysis. pp. 232-236.
Bhatnagar Anand
Evans Matthew J.
Macek Kyong H.
Mehta Bhavesh M
QUALCOMM Incorporated
LandOfFree
Adaptive filters and apparatus, methods, and systems for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive filters and apparatus, methods, and systems for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive filters and apparatus, methods, and systems for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3903528