Method and apparatus for image rotation

Details Method and apparatus for image rotation Method and apparatus for image rotation

1993-02-19

2000-08-01

Mancuso, Joseph

Image analysis

Image transformation or preprocessing

Changing the image coordinates

382300, G06K 932

Patent

active

060978554

ABSTRACT:
An image rotation system includes a method and apparatus for rotating an image by skewing the image in both the vertical and horizontal directions, and interpolating the image in both the vertical and horizontal directions. A rough vertical skew is performed prior to horizontal skew and prior to any interpolation. Thereafter, more complex processing operations are carried using horizontal scan line pixel streams exclusively. In particular, the horizontal stream processing achieves vertical interpolation, horizontal interpolation corrected for the rough vertical skew, and a fine vertical skew adjustment.

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"Digital Image Warping", George Wolberg IEEE Computer Society press.

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