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How exactly is the fingerprint quality calculated?

April 26, 2017calculated fingerprint quality

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How exactly is the fingerprint quality calculated?

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Fingerprint image quality is linked to the total length of ridges found in the fingerprint. Only ridges that are well defined and can be extracted safely are counted, if a ridge belongs to the background (noisy) zone, it is not considered. Total ridge length is normalized by the total sensor surface, fingerprint quality is therefore a number between 0 and 100.