Modified BCH data hiding scheme for JPEG steganography

EURASIP Journal on Advances in Signal Processing

Table 1 Accuracy of the steganalysis [20] for different sizes of the intersected areas and payloads

Payload bpc	Accuracy of the stege analysis
	Proposed method					BCH[16]\improvement
0.05			I _{sh 2}			50.12\0.09
			10%	30%	50%
	I _{sh 1}	30%	50.11	50.08	50.04
		50%	50.05	50.06	50.03
0.1			I _{sh 2}			51.54\1.51
			10%	30%	50%
	I _{sh 1}	30%	50.11	50.06	50.04
		40%	50.05	50.07	50.03
0.15			I _{sh 2}			57.13\6.58
			30%	35%	40%
	I _{sh 1}	10%	50.25	50.31	50.48
		15%	50.29	50.28	50.55
0.17			I _{sh 2}			60.03\7.22
			25%	35%	45%
	I _{sh 1}	5%	53.87	54.01	53.96
		15%	53.10	52.28	52.81
		30%	53.91	54.12	53.89
0.2			I _{sh 2}			65.54\6.62
			10%	30%	50%
	I _{sh 1}	5%	59.81	59.51	60.02
		15%	59.26	58.19	59.01
		30%	59.98	60.11	59.45
0.22			I _{sh 2}			73.06\10.6
			25%	35%	50%
	I _{sh 1}	30%	62.18	62.01	62.24
		50%	65.21	65.53	65.31
0.25			I _{sh 2}			80.45\11.33
			30%	40%	50%
	I _{sh 1}	50%	69.38	69.25	69.13

where I_sh1 and I_sh2 are the intersected area size in terms of the percent point from the block size 2^m- 1 for schemes $m_{p}^{1}$ and $m_{p}^{2}$