Phase Detection Auto Focus

The Visidon PDAF algorithm detects phase difference between two images reliably and accurately even under difficult environment such as low light and low surface detail environments. The algorithm can provide great improvement to camera’s autofocus system.

The Visidon PDAF algorithm computes the phase difference between left and right PD sensor images in sub-pixel accuracy and is specifically tuned for noisy and low textured cases where traditional PDAF algorithms may have problems. Visidon software supports both the whole image and user given regions to be used for the phase difference computation.

Key Features

  • Robust to difficult imaging conditions such as high noise, changing illumination, blurs
  • Produced phase difference results have significantly smoother linearity across the focus range
  • Benefits from increased number of PD sensors (higher PD image resolution), thus ideal with dual pixel technology