Vispro4 face image quality analysis and normalization

Vispro4

Vispro4 is a face image quality analysis and normalization engine aligned with the ISO/IEC 39794-5 standard for face image data. It provides quality metrics and scores through a REST API for integration into passport, identity document, and biometric enrollment systems. Vispro4 ensures the face image quality and consistency essential for face recognition accuracy, generation of print and chip images, and efficient manual results adjudication.     

Image Quality Analysis evaluation and metrics:

  • Unified Quality Score (overall quality)
  • Head size and position
  • Head pose angles (pitch, roll, yaw)
  • Face over/under exposure
  • Face illumination uniformity
  • Face contrast and dynamic range
  • Compression artifacts
  • Face sharpness
  • Motion blur
  • Face natural color
  • Red eye detection

 

  • Ears visible
  • Glasses present
  • Glasses reflections
  • Eyes open, mouth closed
  • Eyes/face occlusions
  • Neutral face expression
  • Background uniformity
  • Background color (whiteness)
  • Background visibility above head
  • Image color vs. Gray or Monochrome
  • Image type, color format, size
Image Normalization to standard format:

Vispro4 can optionally normalize a face image to a specified  target format or requirement.

  • ISO/IEC 39794-5 Reference Image for MRTD and General Purpose Face Image
  • Custom normalization, including image dimensions, head size/position, inter-eye distance
  • Automatic image rotation to ensure eye alignment, including filling of background voids
  • Output to given specified file size for chip image requirements

Source Image                                            Normalized – no fill                                      Normalized – auto fill

Download Vispro4 data sheet
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