Image processing method and device
US5719970A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Feb 17, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A two-line sensor type image input and processing apparatus and method for accurately determining the current scan state, start of scanning and end of scanning events, as well as estimating scanning speed corresponding thereto, and for performing high precision distortion correction on the basis of these estimated scanning speeds. This image input and processing method or apparatus may comprise 1) overall speed judgment that judges the scanning speed based on feature data from the two sensors; 2) stop state judgment that judges whether or not the image input member is in a scan stop state with the input switch for facilitating image data input in the ON state; 3) pre/post stop state speed judgment that judges the scanning speed before and after the scan stop state based on the scan stop time judged by stop state judgment and the overall scanning speed judged by overall speed judgment; 4) scan start judgment that judges whether or not the image input member started scanning; 5) scan start speed judgment that judges the scanning speed at scan start; 6) scan end judgment that judges whether or not the image input member has ended scanning; 7) scan end speed judgment that judges the sc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.