Fig. 8
From: High capacity data hiding scheme based on (7, 4) Hamming code
The pixel histogram analysis comparison of Lena and Baboon. a “Matrix Encoding” of Lena with ER = 2 bpp. b “Hamming+1” of Lena with ER = 2 bpp. c “Matrix Encoding” of Lena with ER = 3 bpp. d “Matrix Encoding” of Baboon with ER = 2. e “Hamming+1” of Baboon with ER = 2 bpp. f “Matrix Encoding” of Baboon with ER = 3