Method for detecting chaotic structures in a given medium
US6628806B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Jul 17, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method of detecting chaotic structures in a given medium.It is of the type consisting in:calculating the components of the light intensity gradient vector E at every point of a window F, centered on a point of a block representative of the medium, and it is characterized in that it furthermore consists in summing elementary matrices M for all the points of the window F, diagonalizing said sum matrix A so as to determine its eigenvalues &lgr;1, &lgr;2, &lgr;3, quantifying, at the center of the window, the minimum of the said eigenvalues &lgr;1, &lgr;2, &lgr;3, and with the constraint UT×D=1, eliminating the contribution of the largest eigenvalue, defining a multidirectional error by integrating it in the plane defined by the eigenvectors corresponding to the remaining eigenvalues, assigning the multidirectional error to the image point on which the window F is centered, and calculating the multidirectional errors assigned to all the image points of the image block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.