Method for rotating a binary image
US4837845A · kind A · utility
39Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Feb 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/602
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention deals with rotating an n.times.n block of bits through an angle of +90 degrees or -90 degrees by a method including the steps of: storing the data in a matrix; separating the matrix into groups of bits of rotatable size; transposing first preselected bit positions with second preselected bit positions in each group; and exchanging a first one or more rows of bits in the group with a second one or more rows of bits in the group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.