Automatic focusing of biomedical specimens apparatus
US5647025A · kind A · utility
111Cited by
18References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for automatically focusing on a slide includes the steps of locating a coverslip, acquiring images from predetermined focal depths in the slide, and starting at an initial focal depth proximate the surface of the coverslip. A set of predetermined characteristics within each of the images are measured to generate at least one image measurement for each of the plurality of images. A focus measure is computed for each of the images, where each focus measure is a function of at least one image measurement. A best focus location is determined relative to a focal depth where an acquired image has a highest focus measure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.