What is the comparison of fingerprints?

Fingerprint comparison is a process of comparing a set of fingerprints associated with a crime with copies of fingerprints that are already in accordance with the Agency for Enforcement. In recent years, the process of corresponding prints was a manual process that required careful control and could be very time consuming. Currently, computer technology has enabled access to huge fingerprint databases and identify possible matches in minutes.

In terms of fingerprint biometrics, there are two generally recognized classes or categories. One is known as tailor -based approach. With this strategy, comparison of fingerprints is based on identifying the characteristics of prints that are less obvious than the more pronounced features. In theoryDy.

The second approach to comparing fingerprints is known as a method based on correlation. This approach relies not only on the identification characteristics of the printing patterns, but also on the location of these features inside the pattern. This includes the establishment of what is known as registration points along the print body, and effectively provide a reference point for a comparative process.

While both fingerprint comparison methods are effective, some disadvantages are associated with each. In the case of a custom -based method, the print quality must be relatively high to verify the match. Prints that are somewhat blurred are much more difficult to solve, because the identification and comparison of secondary features is less likely. At the same time, the effectiveness of the approach based on the correlation on the abilities of the examiner determines the common registration point on two sets of prints according to comparison and compensates for any differences in rotacI or the quality of the prints of prints.

Since the arrival of the computer in the mid -20th century, many agencies have developed to enforce the right of the electronic fingerprint library that allow to quickly scan and identify possible matches. Today, most systems make the new set of prints easier and compare these prints with others found in the library. Using the criteria built into the fingerprint search function, the system quickly identifies and displays one of the archived images that have a good chance to be a match. At this point, experts can perform visual comparisons and specify the results provided by the software.

In many countries around the world, national databases allow fingerprints to be compared with sources created by coercive organs from the ground. Some countries also share their databases with other nations, allowing fingerprints to be compared on an international scale. The final result of this effort was easier to identify matches in shorter time oBeni, which allowed the coercive authorities to arrest and thus solve crimes in a shorter time.