Image Processing Reference
In-Depth Information
RGB bands. Results for the selected medium dimensional context are presented in Table
11.6 in the context of standard validity indices correlation and in Table 11.7 in the rough
indices correlation.
TABLE 11.6 Standard indices correlations in RECA populations
for Berkeley generic images in medium resolution
Name CCDRECA FCDRECA FFTRECA FFDRECA
27059
Dunn DB-0.58 DB-0.57 DB-0.54 DB-0.58
DB Dunn-0.58 Dunn-0.57 Dunn-0.54 Dunn-0.58
β
-index kM-0.91 kM-0.90 wVar-0.88 kM-0.88
78004
Dunn DB-0.64 DB-0.55 DB-0.62 DB-0.60
DB Dunn-0.64 Dunn-0.55 Dunn-0.62 Dunn-0.60
β-index wVar-0.88 wVar-0.80 wVar-0.83 wVar-0.80
86000
Dunn DB-0.70 DB-0.68 DB-0.66 DB-0.61
DB Dunn-0.70 Dunn-0.68 Dunn-0.66 Dunn-0.61
β-index kM-0.95 kM-0.94 kM-0.93 wVar-0.91
In the class of standard validity indices, the Dunn index has been frequently maximally
correlated with the DB index, and vice versa. The β-index has been predominantly most
often correlated with kM and wVar indices.
In the class of rough entropy validity indices, the Dunn index has been maximally highly
correlated with CCD RECA measures. In case of the Davies-Bouldin index predominantly
high (negative) correlation has been observed for the CCD RECA measures. The best
correlation for the β-index has been achieved with the CCD and FCD RECA measures. The
correlations for the β-index are the highest, the correlation for the DB index is moderate.
The correlation for the DB index is comparatively the lowest.
TABLE 11.7 Rough indices correlations in RECA populations
for Berkeley generic images in medium resolution
Name CCDRECA FCDRECA FFTRECA FFDRECA
27059
Dunn R50.18 R50.36 R50.52 R50.33
DB R5-0.11 R4-0.25 R5-0.16 R5-0.06
β
-index R40.80 R40.83 R40.84 R40.86
78004
Dunn R50.27 R50.36 R50.23 R50.01
DB D3-0.10 D2-0.13 T5-0.16 D2-0.14
β
-index F50.86 F50.89 R50.88 R50.90
86000
Dunn R40.22 R50.39 R50.40 R50.36
DB R5-0.19 R5-0.34 R5-0.33 D3-0.10
β-index F50.68 R40.70 R40.85 R50.89
Generic 27059 - 9 bands - high dimensional context
Generic nature image with results for the high dimensional setting in high, medium and
low resolution have been presented in Table 11.8 in the context of standard validity indices
correlation and in Table 11.9 in the rough indices correlation context.
In the class of standard validity indices, Dunn index has been unanimously maximally
correlated with DB index and vice versa. The β-index has been predominantly most often
correlated with kM index.
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