A Novel Printable Watermarking Method in Dithering Halftone Images

Table 4

Quality comparisons of various algorithms based on scores and [14].

Algorithm		Hagit’s method [13]		Guo et al.’s method [12]		Proposed method
		Average
Screen size
Embedded bits	32	2.49	2.23	1.61	1.69	1.61	1.18
	128	2.64	2.32	1.67	1.52	1.67	1.18
	512	2.58	2.32	1.68	1.61	1.68	1.18
		Average
Screen size
Embedded bits	32	17459	11164	1372	2583	829	899
	128	17528	11738	1503	1833	824	815
	512	17328	11382	1660	2240	799	854