iPB4 Biometric Device Range
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Installation & User Guide
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Rev 07 ©2017-2018 iPulse Systems
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THINNING
Digitizing complete, the image is cleaned some more. All ridges are thinned down until they are no more
than a single pixel wide. This allows much easier identification of the overall shape of the print.
RIDGE RECONSTRUCTION
Now that we’ve got the image in its most basic format, we can start a process known as
Ridge
Reconstruction.
During this process, we eliminate a number of interferences like
spurious fusions
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multiple joining points - and a
ir bubbles and islands
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little ovals in the print lines
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before we rejoin any
cuts that have occurred and remove remaining fake ends.
Figure 18 - Digitized to Thinned Images
Figure 17 - Enhanced to Digitized Images
Summary of Contents for iPB4
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