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Wavelet and discrete cosine transforms for inserting information into BMP images

Published online by Cambridge University Press:  17 February 2009

I. Orea-Flores ,
M. A. Acevedo  and
J. López-Bonilla
I. Orea-Flores
Affiliation:
Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologas Avanzadas, Instituto Politécnico Nacional, Av. IPN 2580, La Laguna Ticomán, 07340 México D.F.; e-mail: iorea@ipn.mx.
M. A. Acevedo
Affiliation:
Sexyón de Estudios de Posgrado e Investigatión Escuela Superior de Ingeniería Mecánica y Eléctrica Instituto Politécnico Nacional Edif. Z-4, 3er piso. Col Lindavista, 07738 México D.F.; e-mail: macevedo@ipn.mx, jlopezb@tpn.mx.
J. López-Bonilla
Affiliation:
Sexyón de Estudios de Posgrado e Investigatión Escuela Superior de Ingeniería Mecánica y Eléctrica Instituto Politécnico Nacional Edif. Z-4, 3er piso. Col Lindavista, 07738 México D.F.; e-mail: macevedo@ipn.mx, jlopezb@tpn.mx.
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Abstract

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In this work we use the Discrete Wavelet Transform in watermarking applications for digital BMP images with the objective is to guarantee some level of security for the copyright. We also compare the results with the Discrete Cosine Transform for the same application. Results are obtained from a number of tests, primarily in order to validate the security level and the robustness of the watermark, but also to prove that the original image suffers only very small variations after the watermark is embedded. We also show how to embed the watermark, where to insert it and the capacity supported for inserting an image.

Keywords

watermarkingsteganographywavelet transformdiscrete cosine transform.
Type
Research Article
Information
The ANZIAM Journal , Volume 48 , Issue 1 , July 2006 , pp. 23 - 35
Copyright
Copyright © Australian Mathematical Society 2006

References

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