Lighting selection and setup play a critical role in the success of a machine vision application. Vision systems rely on specific types of lighting to optimize contrast or to highlight a specific feature of interest. Developing an effective lighting system can be a difficult task, requiring the testing of multiple types of lights and cameras. Patterned area lighting (PAL) simplifies some of these difficult imaging problems on reflective, transparent or semitransparent materials by combining 2D and 3D qualitative methods into one image.
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