Image rotating system by an arbitrary angle

Abstract

Abstract An image rotating system by an arbitrary angle which is effective in image processing techniques using terminal equipments such as a workstation, and will not distort a rotated image even with a rotation angle increasing. Skew transformation is implemented for respective skew angles in horizontal and vertical directions corresponding to a desired rotation angle three times alternately, so that affine transformation for image rotation may be replaced by triple skew transformations. Thus, arbitrary two-dimensional image data is precisely rotated by any desired angle at high speeds without resorting to approximation of the arithmetic equation.

Inventors

• 👤 Atsushi; Tanaka
• 👤 Masatoshi; Kameyama

Bibliographic Details