1. HIDING IMAGES USING MODIFIED SEARCH-ORDER CODING AND MODULUS FUNCTION.
- Author
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CHANG, YU-JIE, WANG, RAN-ZAN, and LIN, JA-CHEN
- Subjects
- *
CRYPTOGRAPHY , *PIXELS , *DIGITAL media , *MASS media , *DIGITAL technology - Abstract
This paper proposes a method for hiding an important image in a cover image whose size is limited. In this method, in order to save space, a modified search-order coding (MSOC) technique first transforms the important image, then, a randomization procedure permutes the transformed image to further increase the security. Finally, a modulus function embeds the permuted code in a cover image; notably, in the modules function, the modulus base used for a pixel is determined according to the variance of its neighboring pixels. Experimental results show that the images are of high quality. Comparisons with reported methods are provided. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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