Method for converting a bit map of an image to a run length or run end representation
US4646356A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1984 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jun 29, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/419
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for converting an image from a bit map to a run end or run length representation includes the steps of: storing the image as a bit map representation; accessing for each byte in an image by a look-up table a selected routine, corresponding to such byte, from a number of routines for converting bit strings to run representations, wherein the look-up table accessed is selected in accordance with a color value of a preceding pixel binary bit; and executing the selected routine on the current byte to convert the bit string to a run representation; storing in a run representation buffer, as a count value, each run representation; repeating the above steps of accessing and executing for each byte and storing for each run of continuous color to the end of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.