A Comparative Analysis of Information Hiding Techniques for Copyright Protection of Text Documents

Table 4

A comparative analysis of NL techniques.

Algorithm	Embedding capacity; (1 bit per)	Invisibility	DR	Language compatibility
Topkara et al., 2006 [34]	Sentences	Imperceptible	Low	English
Topkara et al., 2006 [35]	Synonym of words	Imperceptible	Low	English
Meral et al., 2009 [36]	Synonym of words	Imperceptible	Low	Turkish
Kim, 2008 [37]	Synonym of words	Imperceptible	Low	Korean
Kim et al., 2010 [38]	Displacement of adverbs	Imperceptible	Low	Korean
Halvani et al., 2013 [39]	Synonym of words	Imperceptible	Low	German
Mali and et al., 2013 [40]	Grammatical words	Imperceptible	Low	English
He et al., 2009 [41]	Sentences	Imperceptible	Low	Chinese