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Results
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7.3.1.7 Quality Calculation
Stage # Areas "
All Visual Areas V1
V2
V3
Initial
0.91335
0.95679
0.93979
0.95878
Very-low Res.
0.9333
0.96725
0.95373
0.96833
Low Resolution
0.96196
0.9839
0.97344
0.97873
High Resolution
1
1
1
1
Table 2: Quality for measured reference image; two iterations were done on very-low-resolution images,
three iterations on low-resolution images, and two iterations on high-resolution images (cf., Figure 51).
Here, the high-resolution visual-area ROIs were defined as the gold standard because the re-
sult produced was inspected by several human experts who found it to be very good. There-
fore, the qualities of the visual-area ROIs after high-resolution registration must be one. As for
the artificially created reference image in section 7.2, the quality measure increases during the
matching process. In contrast to the energy, the quality for the same visual areas at different
stages can be compared. In general, the energies of the same deformation will be different for
different resolutions. One reason for this is that the energy weights must not be equal for dif-
ferent resolutions. In addition, low-resolution images are blurred and the results are therefore
usually different even if the corresponding energy weights for the different resolutions are
equal.
The qualities between different flat data sets cannot easily be compared because the qual-
ity is based on the gold standard ROIs. For example, from the quality values in Table 1 and
Table 2, it cannot be inferred that the resulting visual-area ROIs are better here than for the
other case.
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