Electronic brush generation
US5151686A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1991 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Feb 5, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04845
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for creating or modifying an electronically represented image comprising a display (30); a store (11) for storing arrays of data values defining electronic brushes; an input device (5) to enable an operator to control movement of a previously defined brush on the display; and a processor (1) responsive to the input device (5) to move an electronic brush selected from the store across the displays (30) so as to create or modify an electronically represented image. The processor (1) is also adapted to generate and store a representation of the profile of an electronic brush for use subsequently to create or modify electronically an image, in which a previously defined brush is used to define an array of pixels at a first resolution having a shape corresponding to the new brush, the previously defined brush comprising an array of pixels for each of which a value is stored. The processor (1) stores a value for each pixel of the new array computed from the values of the or each pixel of the previously defined brush which passes through the new array pixel during movement of the previously defined brush.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.