. Author manuscript; available in PMC: 2016 Jun 1.

Published in final edited form as: IEEE Trans Med Imaging. 2015 Jan 1;34(6):1306–1320. doi: 10.1109/TMI.2014.2387336

Table II.

The Average Running Time (seconds) for the Compression and Reconstruction of One Human Retinal Image by the JPEG 2000, MPEG-4, SPIHT [47], K-SVD [29], SRC-DIF, 2D-ASRC, 3D-ASRC-WA, AND 3D-ASRC METHODS Under SEVEN Different Compression Ratios Ranging from 10–40. In this Table, “Com” Denotes the Required Time for the Compression Stage while the “Rec” Stands for the Required Time for the Reconstruction Stage.

Method/Compression Ratio	10		15		20		25		30		35		40
Method/Compression Ratio	Com	Rec	Com	Rec	Com	Rec	Com	Rec	Com	Rec	Com	Rec	Com	Rec
JPEG 2000	0.04	0.01	0.04	0.01	0.04	0.01	0.04	0.01	0.04	0.01	0.04	0.01	0.04	0.01
MPEG-4	0.66	0.02	0.64	0.02	0.62	0.02	0.58	0.02	0.53	0.02	0.47	0.02	0.45	0.02
SPIHT	2.41	1.23	1.28	0.63	0.91	0.46	0.83	0.35	0.68	0.27	0.59	0.28	0.58	0.24
SRC-Dif	3.43	2.68	2.63	2.27	2.17	1.85	1.88	1.83	1.69	1.73	1.41	1.56	1.36	1.23
2D-ASRC	2.82	2.01	2.11	1.65	1.73	1.24	1.53	1.21	1.41	1.13	1.24	0.96	1.23	0.64
3D-ASRC-WA	2.93	2.04	2.18	1.66	1.78	1.26	1.57	1.22	1.43	1.14	1.26	0.97	1.24	0.64
3D-ASRC	2.93	2.61	2.18	2.23	1.78	1.83	1.57	1.79	1.43	1.71	1.26	1.54	1.24	1.21