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کامپیوتر و شبکه::
طول موج مرکزی بهینه
Figure 5.5 show that there exits an optimum centre wavelength for each data set, which produces maximum decidability.
However, the optimum centre wavelengths for the two data sets were found to be different.
Also the optimum centre wavelength was found to be dependent on imaging conditions, since different lighting conditions will produce features of different frequencies.
The optimum centre wavelength for the 'LEI-a' data set was found to be 12.0 pixels, while the 'CASIA-a' provided optimum recognition when encoded using a filter with centre wavelength of 18.0 pixels.
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