Texture quantification of medical images based on a complex-valued local spatial frequency distribution of a stockwell transform
US8160330B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | May 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for texture quantification is provided. Data indicative of a complex-valued local spatial frequency distribution in space-frequency domain are determined by processing a multi-dimensional image data set based on a Stockwell transform with a phase term corresponding to spatial locations of respective frequency components being expressed in terms of radial distance and angle of orientation. The complex-valued local spatial frequency distribution is indicative of a feature of the object. Data indicative of a low frequency energy distribution are determined by filtering the data indicative of a complex-valued local spatial frequency distribution using a band-pass filter having a predetermined low frequency energy bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.