Page 119 - Automated Fingerprint Identification Systems (AFIS)
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104  AUTOMATED FINGERPRINT IDENTIFICATION SYSTEMS






























































         Figure 5.9           5.2.3 IMPORTANCE OF HIGH-QUALITY IMAGES
         Images Captured on
                              Fingerprint images are captured at a resolution of 500ppi (pixels per inch),
         Livescan
                              1,000ppi, or another specified ppi. The higher the number of ppi, the more
                              information is captured in the images. While not all of the information cap-
                              tured in a high ppi image may be needed by the AFIS matchers to match can-
                              didates, a high-resolution image is extremely useful in providing the greatest
                              amount of ridge and valley detail.
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