Spatial frequency spectrometer for and method of detection of spatial structures in materials
US9804088B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Feb 5, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4788
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Spatial frequency spectra from periodic, aperiodic and quasi-random structures in materials are shown and used to detect differences among objects via internal coding from the spatial frequencies. The method is applied to different grades of human tissues for a new form of histology and pathology, and to detect art forgeries and coding boxes, money and papers and gems. The randomness of material structures on surface and at depths near surface can be detected from the spatial spectrum. In tissue spectral features from normal to different stages of cancer in tissue for ex vivo and in vivo applications can be recognized by different spectral fingerprints content of the spatial frequency. Similarly, the painting for the strokes of artist is different. A new type of instrument is described to analyze materials as a Spatial Frequency Spectrometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.