Radiographic device
US8867699B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Jun 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/401
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radiographic device includes grid frequency component eliminating processing means for eliminating a grid frequency component from an original image detected by a radiation detecting device; wherein said means includes a BPF and an HPF for producing a band-pass grid image and a high-pass grid image from an original image through band-pass and high-pass extraction; a subtracting device for taking the difference between these two grid images; an LPF for producing a difference grid image comprising the grid frequency components not completely extracted by the band-pass, through performing a low-pass processed on the difference image in a direction that is parallel to the grid pattern; an adding device for producing a band-pass+difference grid image by adding the difference grid image to the band-pass grid image; and a subtracting device for subtracting the band-pass+difference grid image from the original image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.