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Two-dimensional discrete sine transform scheme for image mirroring and rotation

[+] Author Affiliations
Do Nyeon Kim

The University of Texas at Arlington, Department of Electrical Engineering, 416 Yates Street, Texas 76019

Kamisetty R. Rao

The University of Texas at Arlington, Department of Electrical Engineering, 416 Yates Street, Texas 76019

J. Electron. Imaging. 17(1), 013011 (March 11, 2008). doi:10.1117/1.2885257
History: Received February 12, 2007; Revised July 08, 2007; Accepted August 09, 2007; Published March 11, 2008
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Mirroring an image (horizontally or vertically) and rotation by 90, 180, and 270deg 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 270deg. We illustrate these methods in a video-editing application.

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© 2008 SPIE and IS&T

Citation

Do Nyeon Kim and Kamisetty R. Rao
"Two-dimensional discrete sine transform scheme for image mirroring and rotation", J. Electron. Imaging. 17(1), 013011 (March 11, 2008). ; http://dx.doi.org/10.1117/1.2885257


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