Recent Patents in Signal Processing (January 2012) - Wavelet Transform Applications

For our January 2012 edition, we focus on patents in the area of wavelet domain signal processing. In recent years, wavelet transforms have been designed to serve as suitable basis functions for a wide variety of applications. The selection below includes patents issued in the recent past, and covers applications of the wavelet transform across vastly different fields, ranging from analysis of seismic waveforms to representation of cartographic data to classification of human electrocardiograms.  If you have an interesting patent to share when we next feature patents on wavelet-domain methods, or if you are especially interested in a signal processing research field that you would want to be highlighted in this section, please send email to Shantanu Rane (rane AT merl DOT com).

US 8,055,088, "Deterministic wavelet thresholding for general-error metrics", by M. Garofalakis and A. Kumar, filed 26 October 2009, issued 8 November 2011, assigned to Alcatel Lucent (Paris, France).

US 8,054,591, "Arc detection using discrete wavelet transforms", by S. Changali, J. K. Hooker, K. V. Grigoryan and S. J. Hall, filed 24 July 2008, issued 8 November 2011, assigned to General Electric Company (Schenectady, NY).

US 7,991,185, "Method and apparatus for image splicing/tampering detection using moments of wavelet characteristic functions and statistics of 2-D phase congruency arrays", by Y. -Q. Shi and W. Chen, filed 2 July 2007, issued 2 August 2011, assigned to New Jersey Institute of Technology (Newark, NJ).

US 7,987,186, "Method and system for wavelet-based representation and use of cartographic data", by R. Joshi, filed 6 November 2000, issued 26 July 2011, assigned to NAVTEQ North America, LLC (Chicago, IL).

US 7,949,049, "Memory efficient 3-D wavelet transform for video coding without boundary effects", by J. Xu, S. Li, Y.-Q. Zhang and Z. Xiong, filed 6 August 2004, issued 24 May 2011, assigned to Microsoft Corporation (Redmond, WA).

US 7,890,266, "Wavelet maxima curves of surface latent heat flux", by G. Cervone, M. Kafatos, D. Napoletani and R. Singh, filed 6 October 2009, issued 15 February 2011, assigned to George Mason Intellectual Properties, Inc. (Fairfax, VA).

US 7,751,873, "Wavelet based feature extraction and dimension reduction for the classification of human cardiac electrogram depolarization waveforms", by C. S. de Voir, filed 1 November 2007, issued 6 July 2010, assigned to Biotronik CRM Patent AG (Baar, CH).

US 7,542,526, "Integer cycle event detection using wavelet pass filter system and method", by J. A. Bibier and N. Khan, filed 1 June 2005, issued 2 June 2009, assigned to XG Technology, Inc. (Sarasota, FL).

US 7,899,652, "Linear programming support vector regression with wavelet kernel", by Z. Lu, J. Sun, and K. Butts, filed 31 August 2007, issued 1 March 2011, assigned to Toyota Motor Engineering & Manufacturing North America, Inc. (Erlanger, KY) and
The Regents of the University of Michigan (Ann Arbor, MI).

US 7,853,433, "Combustion anomaly detection via wavelet analysis of dynamic sensor signals", by C. He, Y. Sun and U. DeSilva, filed 2 February 2009, issued 14 December 2009, assigned to Siemens Energy, Inc. (Orlando, FL).