ScannBI Technology

Evofinder® system

The detail behind each part: the X Series scanner, how the 3D surface is built, the examiner’s software and how data moves between laboratories.

Evofinder X Series scanner
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Scanner

Evofinder® X Series

The Model 10 scanner, designed and built in-house: twice the lateral resolution of Model 9, self-locking lead-screw axes and one cassette for bullets and cartridge cases.

Resolution1.79 µm per pixel560 px per mm, X–Y
Field of viewup to 3.6 × 2.7 mmone camera frame
3D scan timeunder 1 mintypical 9×19 mm bullet or case head
Bulletsup to 26 mmdiameter; up to 66 mm high in the cassette
Cartridge casesup to 26 mmdiameter; up to 101 mm long
Axeslead screwsself-locking, no locking screws for transport

Source: ScannBI Technology data

Case base9×19
Bullet · full circumferenceland · groove · land · groove
Fired bulletThe scanner rotates the bullet and records its whole side surface as one flat strip, so land and groove impressions can be compared along their full length.

3D technology

3D surface acquisition

Firing pin and breech face marks are a few microns deep. They appear only when light falls across the surface. The scanner records the surface in 3D, so the examiner can move the light afterwards — here it circles the case on its own.

Frame-fragment captureThe surface is captured piece by piece with focus variation.
Floating Frame and Multi-IlluminationEach point of the surface gets its 3D coordinates.
3D surfaceA model of the surface with sub-micron accuracy.
View and 2D correctionThe examiner works with the model; correction improves search results.Up to +20 % to correlation · ScannBI data

Software

Correlation and comparison

Expert Working Station, release 7.1. Open the points on the screen to see what the examiner works with.

Expert Working Station: two cartridge case scans side by side with a row of loaded specimens

Expert Working Station

  • CompareScale, rotate, overlay, change the light, measure distance, angle and depth.
  • LinkConnect objects and cases after a confirmed match.
  • Pre-filtersAmmunition type, weapon system, examiner, case.
  • ReportsReports and printing for the case file.

Specimen Analysis System

  • CorrelationAutomatic comparison of every new scan with the database.
  • RankingCandidates ordered by similarity.
  • BackupBuilt-in backup of the database.
  • ScalingAdd DAS and EWS stations as the lab grows.

How a hit list forms

Query: case 2026-0418 · 9×19
    Illustration. Not real case data.

    Network & data

    Each lab on its own, connected when needed

    Evofinder® does not depend on a central server. A lab searches its own database and opens a neighbour’s when a case calls for it.

    No central database requiredA global database is possible — on a national scale, for example — but it is never required. Each installation is configured on its own terms, with no permanent link to a central server. A distributed database works faster and shortens the time it takes to reach a final result.
    Targeted lab connectionsUsers connect to the particular laboratory a case calls for, chosen by location and context. Firearms usually travel no more than a few hundred kilometres, so a neighbouring lab is often the one that matters, provided no patrolled border sits in between.
    Fast and easy switchingSwitching to a remote server takes seconds, much like opening a website. Short analysis sessions can be arranged between systems at a convenient time and on agreed terms, without loading network lines or tying up server capacity.

    Data exchange

    Scans stay with the agency

    The database runs on the agency’s own servers. A partner laboratory connects to it directly over a secure network, VPN, LAN or WAN, searches it in a short session and sees the candidates. The scans themselves stay where they are.

    In addition, any scan can be exported as an X3P file (ISO 25178-72), the open format for surface topography, for a laboratory that works on a different system.

    Our position on X3P interoperability →

    Your labEvofinder® server
    Secure connectionVPN · LAN · WAN
    Partner labsearches, sees candidates
    In additionX3P exportISO 25178-72 file for laboratories on other systems
    Own serversData does not leave the agency unless it decides so.
    Roles and action logAccess by role; every action is recorded.
    BackupBuilt-in backup of the database.
    LAN, WAN, VPNTCP/IP networks; remote stations connect over VPN.