Production of second-generation camera-original control tool photographs via photography of digitally generated transparency of a computer-originated image
US5313251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Aug 7, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of predictably producing accurate photoprocessing and graphic arts control tools, to be used for adjusting the parameters of photographic devices, in which a computer-originated image is digitally recorded onto a first recording medium by a digital output recording device, is illuminated and is photographed onto a second recording medium to yield second-generation camera-original control tool photographs on the second recording medium. One or more of the tone, color or frequency response characteristics of the digitally-generated image on the first recording medium are selectively adjusted, using a digital data transform, so that the second-generation control tool photographs on the second recording medium have the tone, color and frequency response characteristics defined as "aim" for that second medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.