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International Journal for Engineering Modelling, Vol. 17 No. 3-4, 2004.

Professional paper

Steganography and watermarking on BMP images

M. A. Acevedo ; Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Eléctrica, Sección de Estudios de Posgrado e Investigación, UPALM Edificio Z-4, 3er piso. Col. Lindavista c.p., 07738 MÉXICO D.F.
Izlian Yolanda Orea ; Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Eléctrica, Sección de Estudios de Posgrado e Investigación, UPALM Edificio Z-4, 3er piso. Col. Lindavista c.p., 07738 MÉXICO D.F.
Jose Luiz López-Bonilla ; Instituto Politécnico Nacional, Escuela Superior de Ingeniería Mecánica y Eléctrica, Sección de Estudios de Posgrado e Investigación, UPALM Edificio Z-4, 3er piso. Col. Lindavista c.p., 07738 MÉXICO D.F.

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Abstract

In this work we perform some tests of steganography and watermarking on BMP images. We use the Discrete Cosine Transform (DCT) and Wavelets in order to insert information into high and medium frequencies. When steganography is used, we explain a method how to introduce secret data into an image and we show the capacity of the image to accept these data. For the watermarking technique we indicate where the data should be placed in order to achieve a robust insertion of the data even in the presence of image compression. Finally, we make a comparison between these two techniques.

Keywords

Discrete Cosine Transform, Wavelets, watermarking, steganography

Hrčak ID:

313938

URI

https://hrcak.srce.hr/313938

Publication date:

19.12.2004.

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