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Image rotation algorithm series 32000 Graphics

Posted: 22 Dec 1999 ?? ?Print Version ?Bookmark and Share

Keywords:rom? algorithm? image rotation algorithm? national semiconductor? storage compartments?

Fast image rotation of 90 and 270 is important in printer applications, since both portrait and landscape orientation printing may be desired. With a fast image rotation algorithm, only the portrait orientation fonts need to be stored. This, in turn, minimizes ROM storage requirements. This application note shows a fast image rotation algorithm that may be used to rotate an 8 pixel-by-8 line image. Larger image sizes may be rotated by successive application of the rotation primitive.

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