VCX-WebCam 2023.5 Update


I am pleased to announce that the VCX Forum has published an update to the VCX-WebCam Specification, called "VCX-Webcam 2023.5". This revision incorporates learning from the first 1.0 version published in early 2023, as more labs have been brought online around the world, as well as direct feedback from VCX Forum members and other industry participants. It delivers more precise, clearly defined procedures aimed at ensuring consistent and reproducible results across all certified labs. The score system remains unchanged, so results from v2023.5 and v1.0 remain directly comparable. You can find the document at the download page.


Key changes include:


1. Lab Setup and Test Environment

  • Expanded and clarified descriptions of laboratory configuration to ensure cross-lab consistency.
  • New requirement for a wider neutral-gray background surround to better accommodate wide field-of-view (FOV) cameras.
  • Additional, detailed guidance for mannequin placement to standardize skin-tone performance testing.

2. Lighting and Measurement Enhancements

  • Defined new procedures for lighting uniformity measurement and minimum uniformity thresholds.
  • Added FIT metric threshold requirements when creating lighting presets.
  • Reference measurements for TV brightness added; target TV white brightness reduced from 700 lux to 500 lux.
  • Renamed “CW (LED)” to “VCX Daylight (LED)” for spectral accuracy (light source itself unchanged).

3. Test Procedure Clarifications

  • 72Hz Siemens star now explicitly designated as the default resolution test pattern.
  • Expanded definition and execution details for the head-turn test.
  • Clarified LED box positioning options in timing-based tests.
  • Corrected the delta-eAB target in color accuracy measurement tables.
  • Clarified the formula used for frame rate calculation.

4. KPI Adjustments

  • The Contrast KPI has been temporarily deprecated, with an updated method planned for a future revision.

With these updates, VCX-WebCam 2023.5 not only sharpens the precision of its evaluation framework but also strengthens the comparability of results across different manufacturers and labs — ensuring that high scores truly reflect real-world image quality.


I extend my sincere thanks to all VCX WebCam members who have contributed their time, expertise, and dedication over the past several years to the development of this specification.




Warm regards,

Benjamin Pak Coordinator