Table 4. The comparison of OMAG and image parameters after applying different methods on one mosaic image. The values are mean values of each parameter in the mosaics (Figure 7G-L).
OMAG parameters |
Image parameters |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
Fractal dimension | Density skeleton | Density vessel | Mean intensity | Intensity standard deviation | Saturation (%) | RMS contrast | ENROPY | Edge content | ||
No equalization | 0.96 | 0.06 | 0.33 | 0.42 | 0.49 | 1.16 | 0.25 | 0.98 | 0.07 | |
Contrast stretch | 0.95 | 0.06 | 0.32 | 0.39 | 0.48 | 0.77 | 0.25 | 0.97 | 0.07 | |
Local histogram equalization | 1.01 | 0.07 | 0.36 | 0.46 | 0.49 | 1.01 | 0.31 | 0.99 | 0.09 | |
Global histogram equalization | 1.14 | 0.08 | 0.47 | 0.75 | 0.43 | 5.32 | 0.24 | 0.81 | 0.07 | |
UCLAHE | 0.94 | 0.06 | 0.33 | 0.34 | 0.47 | 0 | 0.23 | 0.92 | 0.07 | |
RCLAHE | 1.02 | 0.07 | 0.41 | 0.39 | 0.49 | 0.11 | 0.23 | 0.97 | 0.08 |