Method and device for generating colorimetric data for use in the automatic sorting of products, notably fruits or vegetables
US5729473A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1994 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Apr 4, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07C5/342
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method and apparatus for generating colorimetric data useful in the automatic colorimetric sorting of products, such as fruits or vegetables, each product is illuminated by means of a beam producing a succession of lines of light, the energy reflected by the product in preselected wavelengths is reconstituted for each point on each line of light, the light intensity of each point is measured, the measured values are converted so as to form a series of numerical data corresponding, for each wavelength, to the light intensity curves for each line of light, and the series of numerical data are processed, by computing, in accordance with programmed criteria based on a comparison of the values of the homologous points of said series, so as to generate usable colorimetric data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.