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Table 2 PSNR of color images embedded by IA-LSB at 0.45 bpc.

From: Improved Adaptive LSB Steganography Based on Chaos and Genetic Algorithm

PSNR (db) with without
Lena 35.134 35.011
Baboon 28.62 28.556
Milkdrop 39.384 39.252
Plane 34.518 34.391