Method of tracking speckle displacement between two images
US8107694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2007 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jul 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a first preferred embodiment, the invention includes a method of tracking displacements between ultrasound images by calculating a coarse displacement estimate, and calculating a fine displacement estimate using images and coarse displacement estimate. In a second preferred embodiment, the invention includes a method of calculating a coarse displacement estimate from images by reducing the resolution of the images, correlating the reduced resolution images, and calculating the location of the peak of the correlation function. In a third preferred embodiment, the invention includes a method of calculating a finer displacement estimate from images by using a coarse displacement estimate with correlation processing of the images and calculating the location of the peak value of the correlation function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.