Adaptive Compressive Sensing of Images Using Spatial Entropy

Table 1

PSNR (dB) comparison of various CS-based codec for test images at different measurement rates.

Test image	BCS		V-ABCS [6]		S-ABCS [7]		Proposed
	PSNR	ΔPSNR	PSNR	ΔPSNR	PSNR	ΔPSNR	PSNR
= 0.1
Lenna	18.89	−8.19	18.58	−8.50	19.72	−7.36	27.08
Barbara	16.64	−5.29	17.02	−4.91	17.05	−4.88	21.93
Peppers	17.28	−9.10	17.46	−8.92	18.31	−8.07	26.38
Goldhill	20.49	−5.59	20.47	−5.61	21.24	−4.84	26.08
Mandrill	15.71	−3.93	18.14	−1.50	18.89	−0.75	19.64
Avg.	17.80	−6.42	18.33	−5.89	19.04	−5.18	24.22
= 0.3
Lenna	27.35	−5.34	29.05	−3.64	30.54	−2.15	32.69
Barbara	24.02	−0.81	25.60	0.77	25.94	1.11	24.83
Peppers	24.35	−6.96	28.59	−2.72	29.34	−1.97	31.31
Goldhill	23.86	−6.49	26.70	−3.65	27.08	−3.27	30.35
Mandrill	17.64	−5.13	19.74	−3.03	19.39	−3.38	22.77
Avg.	23.44	−4.95	25.94	−2.45	26.46	−1.93	28.39
= 0.5
Lenna	31.64	−4.6	32.10	−4.14	34.41	−1.83	36.24
Barbara	28.35	0.70	29.27	1.62	30.69	3.04	27.65
Peppers	31.11	−3.01	31.18	−2.94	32.70	−1.42	34.12
Goldhill	29.19	−4.1	29.19	−4.1	30.61	−2.68	33.29
Mandrill	21.04	−4.31	22.76	−2.59	22.82	−2.53	25.35
Avg.	28.27	−3.06	28.90	−2.43	30.25	−1.08	31.33