Image processing-system
US4606065A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Feb 9, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30141
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Level data on an output line (24) carrying the digitized output of a video camera and analog-to-digital converter (12) is processed by a combination circuit (10) to store in an acquisition memory (16) the results of a feature-identification or histogram operation. In a histogram operation, the memory locations of the acquistion memory (16) represent the bins into which the levels represented by the level data are sorted, and the contents of those locations indicate the number of picture elements whose levels fall in those bins. In feature identification, the contents of successive memory locations in the acquistion memory (16) contain the positions of those picture elements whose levels have a selected feature. Common circuitry performs both the histogram and feature-identification functions. To perform the histogram function, a counter (39), whose output provides the address for the acquisition memory (16), is operated to load the output of a look-up-table memory (22), which acts as an encoder to indicate the bin into which the level represented by the level signal belongs. An increment circuit (52) is then operated to read the contents of that location in the acquisition memory (…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.