Question

I’ve got a C# application running on Win7 and a USB fingerprint scanner. I’m talking to the scanner via Windows Biometric Framework (WBF). WinBioCaptureSample() gets me something, a lot when I ask for _RAW, a little when I ask for _PROCESSED.

I assume that “raw” is an image and that “processed” is a template, but what formats are they using??

I need the sample as either an image (any standard format) or an INCITS-378 template, and Microsoft’s docs don’t say if that’s possible. I can’t even figure out how to use the offsets in the WINBIO_BIR_DATA structure to find the data in memory.

I note again that this is C#, not C++.

Any clues?

Edit I’ll settle for any sample code that calls WinBioCaptureSample() (other than what’s on MSDN).

Answer 1

from MSDN:
The BIR is compatible with the Common Biometric Exchange Format Framework (CBEFF) defined by NIST 6529-A.

Source: MSDN

NIST 6529-A

This Presentation has a great description of the BIR format byte by byte..