An Improved Information Hiding Method Based on Sparse Representation

Table 1

PSNR comparison results.

Cover image	Cover image (pixel)	Database	PSNR (dB)
			Literature [26]	The proposed method
Lena	512 × 512	CASIA	36.52	41.97
Lena	512 × 512	PolyU	34.26	37.62
Airplane	512 × 512	CASIA	38.5	44.90
Airplane	512 × 512	PolyU	34.42	39.42
Barbara	512 × 512	CASIA	36.12	40.50
Barbara	512 × 512	PolyU	33.05	36.05