BS ISO/IEC 29794-4:2024

This document establishes:

• terms and definitions for quantifying finger image quality;

• methods used to quantify the quality of finger images; and

• standardized encoding of finger image quality;

for finger images at 196,85 px/cm spatial sampling rate and a bit depth of 8 bit for the greyscale pixel intensity values scanned or captured using optical area sensors in direct contact with friction ridges.