Anti-aliasing two-pass image rotation

D.J. Chung, J. Pineda de Gyvez, E. Sanchez-Sinencio

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In image rotation, a two-pass algorithm has many advantages over a one-pass algorithm in high speed computation. The reported two-pass algorithm gives a serious performance degradation in high frequency area at large rotation angles (30 degrees to 45 degrees). This paper presents a new two-pass algorithm that overcomes the limitations of previously reported approaches at large rotation angles. The hardware structure for the two-pass algorithm needs only four additional counters. We have also developed a novel three-dimensional Fourier- theoretical basis including the effect of interpolation. A brief comparison of existing techniques and the two-pass algorithm newly suggested is presented. At large rotation angles, the suggested algorithm has almost the same performance as that of the one-pass algorithm and much better performance than that of an existing two-pass algorithm.
Original languageEnglish
Title of host publicationProceedings of the IS&T/SPIE Image and Video Processing IV Conference, San Jose, January 1996
EditorsR.L. Stevenson, M.I. Sezan
Place of PublicationBellingham
Publication statusPublished - 1996

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


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