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. 2013 Feb;3(1):5–17. doi: 10.3978/j.issn.2223-4292.2013.01.01

Table 1. The comparison of OMAG and image parameters after applying different methods on mosaic images of Figure 6A-F. The values are shown as mean value ± standard deviation of all mosaics.

OMAG parameters
Image parameters
Fractal dimension Density Skeleton Density vessel Mean Intensity Intensity standard deviation Saturation (%) RMS contrast1 ENROPY Edge content
No equalization 0.97±0.09 0.05±0.01 0.28±0.09 0.22±0.12 0.39±0.09 0.07±0.16 0.21±0.02 0.69±0.22 0.05±0.01
Contrast stretch 0.95±0.09 0.05±0.01 0.28±0.09 0.15±0.09 0.33±0.09 0.01±0.00 0.18±0.02 0.57±0.23 0.05±0.01
Local histogram equalization 1.09±0.05 0.07±0.02 0.39±0.10 0.57±0.17 0.43±0.17 1.08±0.06 0.26±0.06 0.86±0.35 0.07±0.03
Global histogram equalization 1.03±0.10 0.06±0.01 0.34±0.06 0.47±0.21 0.42±0.16 0.94±0.06 0.29±0.06 0.83±0.33 0.08±0.03
UCLAHE 0.96±0.09 0.06±0.01 0.28±0.09 0.18±0.09 0.35±0.09 0.01±0.0 0.19±0.02 0.62±0.22 0.05±0.01
RCLAHE 1.03±0.07 0.06±0.01 0.32±0.08 0.29±0.09 0.44±0.06 0.04±0.03 0.23±0.02 0.85±0.16 0.07±0.02