Browse Prior Art Database

Image Rotation

IP.com Disclosure Number: IPCOM000042828D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04

Publishing Venue

IBM

Related People

Authors:
Martinez, RT [+details]

Abstract

A computer is programmed to rotate raster patterns to any one of four orthogonal positions about any one of a plurality of rotating points. During rotation, image reversal can be achieved. The raster pattern is first serialized into a single bit string. The programmed processor, in accordance with the desired rotation, transfers on a bit-by-bit basis the image-representing signals from the serialized bit string into a second serialized bit string having different positions representative of the desired rotation. The second bit string is then utilized for presenting the image in the newly rotated orientation. Referring to the drawing, the original image raster has five identifiable points A through E. As described, rotation of the image raster is about point A.