Journal of Applied Mathematics

A Steganographic Method Based on Pixel-Value Differencing and the Perfect Square Number

Hsien-Wen Tseng and Hui-Shih Leng

Full-text: Open access

Abstract

The pixel-value differencing (PVD) scheme uses the difference value between two consecutive pixels in a block to determine how many secret bits should be embedded. There are two types of the quantization range table in Wu and Tasi's method. The first was based on selecting the range widths of [8, 8, 16, 32, 64, 128], to provide large capacity. The second was based on selecting the range widths of [2, 2, 4, 4, 4, 8, 8, 16, 16, 32, 32, 64, 64], to provide high imperceptibility. Most of the related studies focus on increasing the capacity using LSB and the readjustment process, so their approach is too conformable to the LSB approach. There are very few studies focusing on the range table design. Besides, it is intuitive to design it by using the width of the power of two. This work designs a new quantization range table based on the perfect square number to decide the payload by the difference value between the consecutive pixels. Our research provides a new viewpoint that if we choose the proper width for each range and use the proposed method, we can obtain better image quantity and higher capacity. In addition, we offer a theoretical analysis to show our method is well defined. The experiment results also show the proposed scheme has better image quantity and higher capacity.

Article information

Source
J. Appl. Math., Volume 2013 (2013), Article ID 189706, 8 pages.

Dates
First available in Project Euclid: 14 March 2014

Permanent link to this document
https://projecteuclid.org/euclid.jam/1394808045

Digital Object Identifier
doi:10.1155/2013/189706

Mathematical Reviews number (MathSciNet)
MR3074320

Zentralblatt MATH identifier
1271.94005

Citation

Tseng, Hsien-Wen; Leng, Hui-Shih. A Steganographic Method Based on Pixel-Value Differencing and the Perfect Square Number. J. Appl. Math. 2013 (2013), Article ID 189706, 8 pages. doi:10.1155/2013/189706. https://projecteuclid.org/euclid.jam/1394808045


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