BE803237A - SIGNAL SPECTRUM ANALYSIS FOR WALSH FUNCTION AND HADAMARD OPERATORS - Google Patents

SIGNAL SPECTRUM ANALYSIS FOR WALSH FUNCTION AND HADAMARD OPERATORS

Info

Publication number
BE803237A
BE803237A BE134254A BE134254A BE803237A BE 803237 A BE803237 A BE 803237A BE 134254 A BE134254 A BE 134254A BE 134254 A BE134254 A BE 134254A BE 803237 A BE803237 A BE 803237A
Authority
BE
Belgium
Prior art keywords
spectrum analysis
signal spectrum
walsh function
hadamard
operators
Prior art date
Application number
BE134254A
Other languages
French (fr)
Inventor
A J Radcliffe
Original Assignee
Burroughs Corp
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 Burroughs Corp filed Critical Burroughs Corp
Publication of BE803237A publication Critical patent/BE803237A/en

Links

Classifications

    • 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
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/145—Square transforms, e.g. Hadamard, Walsh, Haar, Hough, Slant transforms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/42—Global feature extraction by analysis of the whole pattern, e.g. using frequency domain transformations or autocorrelation
    • G06V10/431—Frequency domain transformation; Autocorrelation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/14—Image acquisition
    • G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
    • G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/30—Individual registration on entry or exit not involving the use of a pass
    • G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
    • G07C9/35—Individual registration on entry or exit not involving the use of a pass in combination with an identity check by means of a handwritten signature

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Multimedia (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computational Mathematics (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Collating Specific Patterns (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Analysis (AREA)
  • Complex Calculations (AREA)
BE134254A 1972-08-21 1973-08-06 SIGNAL SPECTRUM ANALYSIS FOR WALSH FUNCTION AND HADAMARD OPERATORS BE803237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28241872A 1972-08-21 1972-08-21

Publications (1)

Publication Number Publication Date
BE803237A true BE803237A (en) 1973-12-03

Family

ID=23081437

Family Applications (1)

Application Number Title Priority Date Filing Date
BE134254A BE803237A (en) 1972-08-21 1973-08-06 SIGNAL SPECTRUM ANALYSIS FOR WALSH FUNCTION AND HADAMARD OPERATORS

Country Status (10)

Country Link
JP (1) JPS4987255A (en)
BE (1) BE803237A (en)
BR (1) BR7306381D0 (en)
CA (1) CA1019837A (en)
CH (1) CH576677A5 (en)
DE (1) DE2340110C3 (en)
FR (1) FR2197277B1 (en)
GB (1) GB1400374A (en)
IT (1) IT1003118B (en)
NL (1) NL7310683A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54122244U (en) * 1978-02-17 1979-08-27
US4308522A (en) * 1979-03-19 1981-12-29 Ncr Corporation Identity verification apparatus and method
GB2159998B (en) * 1984-06-07 1988-02-17 Rolls Royce Personal handwriting verification
GB2164186A (en) * 1984-09-04 1986-03-12 Stc Plc Signature verification
DE69021547T2 (en) * 1990-02-16 1996-01-18 Rolls Royce Plc Device and method for determining the authenticity of a person's handwriting.

Also Published As

Publication number Publication date
NL7310683A (en) 1974-02-25
GB1400374A (en) 1975-07-16
IT1003118B (en) 1976-06-10
CA1019837A (en) 1977-10-25
DE2340110C3 (en) 1981-04-09
CH576677A5 (en) 1976-06-15
DE2340110B2 (en) 1980-06-19
FR2197277B1 (en) 1976-09-10
AU5894673A (en) 1975-02-06
DE2340110A1 (en) 1974-03-07
BR7306381D0 (en) 1974-07-25
JPS4987255A (en) 1974-08-21
FR2197277A1 (en) 1974-03-22

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