Method and system for pattern recognition based on dynamically c

Details Method and system for pattern recognition based on dynamically c Method and system for pattern recognition based on dynamically c

1996-08-28

1999-08-03

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

704251, 704252, 704232, G06K 900

Patent

active

059338067

ABSTRACT:
A system and method are used for recognising a time-sequential input pattern (20), which is derived from a continual physical quantity, such as speech. The system has input means (30), which accesses the physical quantity and therefrom generates a plurality of input observation vectors. The input observation vectors represent the input pattern. A reference pattern database (40) is used for storing a plurality of reference patterns. Each reference pattern includes a sequence of reference units, where each reference unit is represented by at least one associated reference vector .mu..sub.a in a set {.mu..sub.a } of reference vectors. A localizer (50) is used for locating among the reference patterns stored in the reference pattern database (40), a recognised reference pattern, which corresponds to the input pattern. The locating includes selecting a subset {.mu..sub.s } of reference vectors from said set {.mu..sub.a } for each input observation vector o by calculating a measure of dissimilarity between the input observation vector o and each reference vector of the set {.mu..sub.a }. A number of reference vectors .mu..sub.a, whose measures of dissimilarity with said input observation vector o are the smallest, are used as the subset {.mu..sub.s } of reference vectors. The reference vectors of the subset {.mu..sub.s } are used to calculate for each reference pattern, a pattern similarity score. The recognised pattern is one of the reference patterns for which an optimum of the pattern similarity scores is calculated. Output means (70) are used for outputting the recognised pattern.

REFERENCES:
patent: 4319221 (1982-03-01), Sakoe
patent: 4384273 (1983-05-01), Ackland et al.
patent: 4870414 (1989-09-01), Karabed
patent: 5278942 (1994-01-01), Bahl et al.
patent: 5617486 (1997-04-01), Chow et al.
patent: 5710866 (1998-01-01), Alleva et al.
patent: 5719344 (1998-02-01), Pawate
patent: 5754681 (1998-05-01), Watanabe et al.
L. Rabiner, "A Turorial on Hidden Markov Models and Selected Applications in Speech Recognition", Proceeding of the IEEE, vol. 77, No. 2, Feb. 1989.
E. Bocchieri, "Vector quantization for the efficient computation of continuous density likelihoods", proceedings of ICASSP 1993, pp. 692-695.

Affiliated with

Also associated with

Rating

Method and system for pattern recognition based on dynamically c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for pattern recognition based on dynamically c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for pattern recognition based on dynamically c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-860274