US PATENT SUBCLASS 382 / 296
.~.~ To rotate an image


Current as of: June, 1999
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382 /   HD   IMAGE ANALYSIS

276  DF  IMAGE TRANSFORMATION OR PREPROCESSING {13}
293  DF  .~ Changing the image coordinates {4}
296.~.~ To rotate an image {1}
297  DF  .~.~.~> Rotation of image is limited to 90 degrees, 180 degrees, or 270 degrees


DEFINITION

Classification: 382/296

To rotate an image:

(under subclass 293) Subject matter wherein a coordinate transformation is undertaken for the purpose of turning the image (or a signal representation thereof) about an axis or center, or adjusting the image's orientation and skew.

(1) Note. This subclass includes transformations of a kind that rotate the sampling of an image about an axis while holding the image itself stationary. As an example, an image is sampled first along a sequence of vertical columns to obtain a two-dimensional representation of the image, and this representation is then sampled along a sequence of horizontal rows to obtain still another representation of the image.

SEE OR SEARCH CLASS

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

126, and 436+ for rotation of an s:graphical image for display presentation.

348, Television,

583, for the rotation of video images in a television system.