FISH Comparator Software

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Challenges of Fingerprint Identification
The main goal of the fingerprint expert is to deliver reliable conclusions. With fingerprints of good quality and ten prints, there is generally no room for interpretation and error and hardly any chance of mistaken judgment on identification. However the poorer the detail at hand, the greater the role of the expert becomes and the need to compare, judge and validate. Mistaken identifications have some common causes; the fingerprints under examination are of bad quality and/or there is time pressure to achieve a match.

Standards Based Approach
An expert using a standards based approach may be compared with the way in which courts test evidence in general. Evidence must be legal and convincing to be accepted as reliable. With fingerprint evidence there is a parallel. The identification must meet all the legitimate rules and in particular, the set standard and, next to that, the expert must be convinced of the reliability.

No two comparators are the same
The fingerprint identification process follows several stages of activity in order to achieve sound decision-making. This process follows a pattern of stages. These are the stages of Comparison, Evaluation, Decision, Verification and the Conclusion. Most fingerprint comparators focus on the algorithm features built into their systems rather than assisting with the process of identification.

The FISH Approach
FISH Comparator places its emphasis not only on the algorithms but also more importantly on the processes involved in fingerprint comparison. This approach supports fingerprint bureaus, which document all of their procedures and processes undertaken to accomplish its analysis work.

Collation of case images
FISH Comparator scans latent images, exhibits, 10 print forms and known sheets. The application also loads camera images with photographs automatically scaled. Color images are converted to black/white and levels adjusted

Level 1 Inspection
FISH Comparator efficiently loads the images and provides the capability to:
•zoom in and pan;
•visually compare; and
•reject or accept for level 2 analysis

Level 2 Ridge Analysis
FISH Comparator enables the ability to Mark up and add text and to print off the final image
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