Method of quantifying visual uniformity of planar objects
US6438256B1 · kind B1 · utility
6Cited by
7References
10Claims
0Family size
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Key dates
| Filing date | May 5, 1999 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | May 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/86
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved image analysis method to quantify uniformity of visual appearance of planar objects. The measurements are substantially independent of both the image shading and the overall lightness differences among the objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.