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Title: Reversible natural language watermarking using synonym substitution and arithmetic coding
Authors: Hao, Wei
Xiang, Lingyun
Li, Yan
Yang, Peng
Shen, Xiaobo
Keywords: Arithmetic Coding
DRNTU::Engineering::Computer science and engineering
Synonym Substitution
Issue Date: 2018
Source: Xiang, L., Li, Y., Hao, W., Yang, P., & Shen, X. (2018). Reversible natural language watermarking using synonym substitution and arithmetic coding. Computers, Materials & Continua, 55(3), 541-559. doi:10.3970/cmc.2018.03510
Series/Report no.: Computers, Materials & Continua
Abstract: For protecting the copyright of a text and recovering its original content harmlessly, this paper proposes a novel reversible natural language watermarking method that combines arithmetic coding and synonym substitution operations. By analyzing relative frequencies of synonymous words, synonyms employed for carrying payload are quantized into an unbalanced and redundant binary sequence. The quantized binary sequence is compressed by adaptive binary arithmetic coding losslessly to provide a spare for accommodating additional data. Then, the compressed data appended with the watermark are embedded into the cover text via synonym substitutions in an invertible manner. On the receiver side, the watermark and compressed data can be extracted by decoding the values of synonyms in the watermarked text, as a result of which the original context can be perfectly recovered by decompressing the extracted compressed data and substituting the replaced synonyms with their original synonyms. Experimental results demonstrate that the proposed method can extract the watermark successfully and achieve a lossless recovery of the original text. Additionally, it achieves a high embedding capacity.
ISSN: 1546-2218
DOI: 10.3970/cmc.2018.03510
Schools: School of Computer Science and Engineering 
Rights: © 2018 Tech Science Press. All rights reserved. This paper was published in Computers, Materials & Continua and is made available with permission of Tech Science Press.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Journal Articles

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