PATTERN RECOGNITION USING MULTIPLE REFERENCE MODELS

申请公布号：: CA2304747(A1)
申请号：: CA19982304747
申请日期：: 1998.10.14
申请公布日期：: 1999.04.22
申请人：: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
发明人：: ARIYAEEINIA, ALADDIN MOHAMMAD;SIVAKUMARAN, PERASIRIYAN;PAWLEWSKI, MARK
分类号：: G06K9/62;G10L17/00;(IPC1-7):G10L5/06
主分类号：: G06K9/62
摘要：: A method and apparatus for pattern recognition comprising comparing an input signal representing an unknown pattern with reference data representing each of a plurality of pre-defined patterns, at least one of the pre-defined patterns being represented by at least two instances of reference data. Successive segments of the input signal are compared with successive segments of the reference data and comparison results for each successive segment are generated. For each pre-defined pattern having at least two instances of reference data, the comparison results for the closest matching segment of reference data for each segment of the input signal are recorded to produce a composite comparison result for the said pre-defined pattern. The unknown pattern is the identified on the basis of the comparison results. Thus the effect of a mismatch between the input signal and each instance of the reference data is reduced by selecting the best segments from the instances of reference data for each pre-defined pattern.