Rapid autofocus method for stereo microscope
US9851549B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2015 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Jul 25, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/244
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rapid autofocus method for a stereo microscope includes steps of: calculating a disparity of each of stereo microscopic images in a stereo microscopic calibration image sequence; extracting a clear stereo microscopic image sequence from the stereo microscopic calibration image sequence; then, finding out a largest disparity and a smallest disparity among the disparities of all the stereo microscopic images in the clear stereo microscopic image sequence; at a chosen magnification, arbitrarily acquiring a stereo microscopic image; finally, determining a disparity range according to the disparity of the acquired stereo microscopic image, the largest disparity and the smallest disparity, and realizing an autofocus of a target object in the acquired stereo microscopic images. The disparity range is obtained via once off-line calibration at the same magnification, and applicable to the autofocus at an arbitrary timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.