This video will run through the theory and configuration of the photmetric stereo lighting feature on FH vision controllers. Photometric lighting can be used to improve the image properties on difficult surfaces, removing glare or highlighting specific features by taking multiple images with varying lighting conditions. Then applying a post-processing algorythym to synthesise the image. Sounds complicated, but quite simple after watching this video.
https://industrial.omron.eu/en/products/inspection-systems
