Increasing the contrast of image features often results in reduced image processing software overhead and thus increased system performance. To do so requires an understanding of the product being inspected and the type of lighting required to achieve this task. In many machine vision systems, LED lighting has replaced fluorescent and quartz halogen lighting due to the increased intensity of LED products, their stability, long lifetimes and cost-effectiveness. Today, numerous vendors offer such lighting products in various configurations including spotlights, ring lights, backlights, dome lights and line-lights.
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