Boots – shoes – and leggings
Patent
1989-05-23
1991-06-11
Lall, Parshotam S.
Boots, shoes, and leggings
364497, 356303, 356319, G01J 342
Patent
active
050238043
ABSTRACT:
In a method and a system for analyzing spectral data including a spectrophotometer and a spectral detector, a data station receives first transmittance spectrum data points and has a file register containing second transmittance spectrum data points. The first and second transmittance data points are transformed respectively to set of first and second absorbance spectrum data points. The first and second absorbance points are band pass filtered at a characteristic frequency nominally associated with spectral bandwidth so as to produce respective sets of first and second filtered data points. A set of weighting factors are established, each corresponding to the square of the sum of a first transmittance point and a second transmittance point for a selected frequency. A comparison factor is generated as a normalized sum of products over a selected spectral frequency range, each product being formed of a weighting factor and corresponding first and second absorbance data points for each selected spectral frequency.
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Grimes E. T.
Ingham H. S.
Lall Parshotam S.
Mattson Brian M.
The Perkin-Elmer Corporation
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