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Journal of Electronic Imaging

Two-dimensional discrete sine transform scheme for image mirroring and rotation
Author(s): Do Nyeon Kim; K. R. Rao
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Paper Abstract

Mirroring an image (horizontally or vertically) and rotation by 90, 180, and 270 deg in the spatial domain is implemented by changing the signs of the 2-D discrete cosine transform (DCT) coefficients of the original image appropriately. This approach leads to an efficient compressed domain-based image mirroring and rotation. This method is now extended to a 2-D discrete sine transform (DST), i.e., a 2-D DST possesses properties similar to 2-D DCT and it can be applied to image mirroring (horizontally or vertically) and also rotation by angles of 90, 180, and 270 deg. We illustrate these methods in a video-editing application.

Paper Details

Date Published: 1 January 2008
PDF: 4 pages
J. Electron. Imaging. 17(1) 013011 doi: 10.1117/1.2885257
Published in: Journal of Electronic Imaging Volume 17, Issue 1
Show Author Affiliations
Do Nyeon Kim, The Univ. of Texas at Arlington (United States)
K. R. Rao, The Univ. of Texas at Arlington (United States)


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