Digital graphic image analyzer
US4604963A · kind A · utility
Inventor
Key dates
| Filing date | Nov 30, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Nov 30, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hand held and hand operated apparatus for analysis of the relationship between numerical values and displayed greyscale of pixels making up an image matrix. The apparatus has a pair of relatively movable members that are located relative to each other to display a greyscale in comparison relationship to window and level scales used to provide rapid analysis of a greyscale distribution of a given image. The members comprise a first cylindrical member concentrically accommodating a cylindrical sleeve. The first member has viewing ports ruled with scales representing values of selected window and level. The sleeve has the greyscale which can be selectively longitudinally and rotatably positioned relative to a viewing port to provide analysis information concerning the greyscale distribution of an image, such as the image on an X-ray film or displayed on a CRT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.