WO2001052101A3 - Method and apparatus for fast signal convolution using spline kernel - Google Patents

Method and apparatus for fast signal convolution using spline kernel Download PDF

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Publication number
WO2001052101A3
WO2001052101A3 PCT/US2001/000758 US0100758W WO0152101A3 WO 2001052101 A3 WO2001052101 A3 WO 2001052101A3 US 0100758 W US0100758 W US 0100758W WO 0152101 A3 WO0152101 A3 WO 0152101A3
Authority
WO
WIPO (PCT)
Prior art keywords
convolution
signal
arithmetic operations
spline
kernel
Prior art date
Application number
PCT/US2001/000758
Other languages
French (fr)
Other versions
WO2001052101A2 (en
Inventor
Richard E Crandall
Original Assignee
Etec Systems Inc
Richard E Crandall
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etec Systems Inc, Richard E Crandall filed Critical Etec Systems Inc
Priority to AU2001227790A priority Critical patent/AU2001227790A1/en
Priority to EP01901939A priority patent/EP1248995A2/en
Publication of WO2001052101A2 publication Critical patent/WO2001052101A2/en
Publication of WO2001052101A3 publication Critical patent/WO2001052101A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration by the use of local operators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations
    • G06F17/153—Multidimensional correlation or convolution

Abstract

A fast convolution method applicable to convole a signal with a smooth kernel that can be approximated by a spline kernel, and a system configured to perform such method using software or signal processing circuitry. Unlike Fourier-based convultion methods which require on the order of N log N arithmetic operations for a signal of length N, the method of the invention requires only on the order of N arithmetic operations to do so. Unlike wavelet-based convolution approximations (which typically also require more arithmetic operations than are required in accordance with the invention to convolve the same signal), the method of the invention is exact for convolution kernels which are spline kernels. Moreover, convolution in accordance with the invention can be acyclic convolution (achieved without zero-padding) or cyclic convolution, and in both cases the invention imposes no restriction (such as evenness) on signal length.
PCT/US2001/000758 2000-01-11 2001-01-09 Method and apparatus for fast signal convolution using spline kernel WO2001052101A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001227790A AU2001227790A1 (en) 2000-01-11 2001-01-09 Method and apparatus for fast signal convolution using spline kernel
EP01901939A EP1248995A2 (en) 2000-01-11 2001-01-09 Method and apparatus for fast signal convolution using spline kernel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/480,908 2000-01-11
US09/480,908 US6701028B1 (en) 2000-01-11 2000-01-11 Method and apparatus for fast signal convolution using spline kernel

Publications (2)

Publication Number Publication Date
WO2001052101A2 WO2001052101A2 (en) 2001-07-19
WO2001052101A3 true WO2001052101A3 (en) 2002-02-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/000758 WO2001052101A2 (en) 2000-01-11 2001-01-09 Method and apparatus for fast signal convolution using spline kernel

Country Status (5)

Country Link
US (2) US6701028B1 (en)
EP (1) EP1248995A2 (en)
AU (1) AU2001227790A1 (en)
TW (1) TW516306B (en)
WO (1) WO2001052101A2 (en)

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US8064726B1 (en) * 2007-03-08 2011-11-22 Nvidia Corporation Apparatus and method for approximating a convolution function utilizing a sum of gaussian functions
US20090070730A1 (en) * 2007-09-06 2009-03-12 Synopsys, Inc. Method and apparatus for modeling a vectorial polarization effect in an optical lithography system
US8144057B1 (en) * 2008-12-11 2012-03-27 Exelis Inc. Methods and apparatus for adaptively determining angles of arrival of signals
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US11114138B2 (en) 2017-09-15 2021-09-07 Groq, Inc. Data structures with multiple read ports
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Also Published As

Publication number Publication date
US20010051860A1 (en) 2001-12-13
US6912323B2 (en) 2005-06-28
TW516306B (en) 2003-01-01
US6701028B1 (en) 2004-03-02
WO2001052101A2 (en) 2001-07-19
EP1248995A2 (en) 2002-10-16
AU2001227790A1 (en) 2001-07-24

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