Apparatus and method for pattern recognition
US5062714A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Feb 12, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/558
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A densitometer apparatus (210) is disclosed and is adapted to provide color density measurements of object samples. The densitometer apparatus (210) comprises a source light (578) for projecting light toward an object sample comprising a control strip (588, 620). A reflection optics assembly (576) is adapted to measure light density reflected from the object sample, when the object sample is in the form of a paper control strip. A transmission optics assembly (618) is adapted to measure transmission density of light rays projected through the object sample, when the object sample is in the form of a film control strip. A motor assembly (426) automatically moves the object sample (588,620) through the apparatus (210) adjacent the source light (578). Pattern definition data is prestored in memory of the apparatus (210). When control strips (588, 620) to be analyzed are "read" through the apparatus (210), a pattern recognition process is employed to compare strip color patches with the prestored data, so as to determine whether the control strip "matches" the pattern definition. The pattern definition data is stored so as to define "regions" where dimensional, positional and spectral …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.