DISCRIMINATION FILTERING DEVICE, DISCRIMINATION METHOD OF OBJECT, AND DESIGNING METHOD OF FILTERS FOR DISCRIMINATION FILTERING DEVICE
First Claim
1. A discrimination filtering device comprising:
- a first filter with a first pass band,a second filter with a second pass band encompassing said first pass band,a detection unit for detecting an electromagnetic wave output from an object of interest and passed through one of said first filter and said second filter to output a first signal and a second signal corresponding to intensity of the electromagnetic wave from said object of interest, andan analysis unit for performing a discriminant analysis of said object of interest based on said first signal normalized by an integral of said second signal.
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Abstract
A discrimination filtering device includes a filter and a filter having different pass bands, a detection unit, a processing unit, and a result output unit. The detection unit detects an electromagnetic wave from an object that is the target of identification through the filters. The pass band of the filters is designed to be suitable for object discrimination. The processing unit substitutes the output from the detection unit into a discrimination function determined based on the pass band of the filters and the teaching spectrum obtained in advance to infer the group which the object belongs to based on the substituted result.
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Citations
17 Claims
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1. A discrimination filtering device comprising:
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a first filter with a first pass band, a second filter with a second pass band encompassing said first pass band, a detection unit for detecting an electromagnetic wave output from an object of interest and passed through one of said first filter and said second filter to output a first signal and a second signal corresponding to intensity of the electromagnetic wave from said object of interest, and an analysis unit for performing a discriminant analysis of said object of interest based on said first signal normalized by an integral of said second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A discrimination method of an object of interest, comprising the steps of:
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detecting an electromagnetic wave output from said object of interest and passed through a first filter with a first pass band to output a first signal corresponding to intensity of the electromagnetic wave passed through said first filter, detecting an electromagnetic wave output from said object of interest and passed through a second filter with a second pass band encompassing said first pass band to output a second signal corresponding to intensity of the electromagnetic wave passed through said second filter, and performing a discriminant analysis of said object of interest based on said first signal normalized by an integral of said second signal.
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16. A designing method of filters for a discrimination filtering device, comprising the steps of:
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setting a transmission property for each of a plurality of filters, generating, from the set transmission property and a teaching spectrum of a plurality of samples, a discrimination function used in discriminating an object of interest by said discrimination filtering device, calculating an error rate of erroneously discriminating the sample when said discrimination function is used, modifying said transmission property, regenerating said discrimination function from the modified transmission property and said teaching spectrum, calculating said error rate for the regenerated discrimination function, and obtaining said transmission property providing the smallest error rate among the set transmission property and modified transmission property. - View Dependent Claims (17)
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Specification