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 |