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home > pmps > summer 2003 > image is everything - machine vision lighting techniques
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Pharmaceutical Manufacturing and Packing Sourcer

Image is Everything - Machine Vision Lighting Techniques

Lighting - The Last Machine Vision Frontier

Machine vision is becoming a common tool on the manufacturing floor. Morphological operation, algorithm, grayscale analysis, correlation, blob tools, vectors, regions of interest and field-of-view (the area the camera sees) are commonplace terms among machine vision users. In just a few years, the focus of machine vision has changed from whether or not the vision system will actually work to whether to purchase brand X over brand Y and at what volume of discount. In fact, the words 'machine vision is a commodity item purchase', a dream for machine vision vendors in the 1980s, is a reality today.

Despite the advances of machine vision hardware, software, cameras and communication protocol, lighting for machine vision remains an art form for those involved with vision integration. The ability to look at a part and state with confidence the lighting technique required for feature extraction is rare, even among those with long term machine vision experience. Why is it that lighting remains so difficult, even though the majority of engineers recognise lighting as an important piece of the total machine vision solution? The reason is that, for the most part, a logical lighting selection workflow to guide us through the necessary steps for integrating the light has been, for the most part, non-existent. Light selection is mostly an afterthought to the vision system purchase.



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By Dirk Vermeersch, European Sales Manager at RVSI ner

Dirk Vermeersch studied Electronic Engineering in Brussels, Belgium and graduated in 1990 with a major distinction. He was then introduced to machine vision, starting work for Aims Optronics as a Machine Vision Engineer.

In 1994 he joined Acuity Imaging Inc as their European Technical Support Manager. Since 2000 Dirk has been using his talents as the European Sales Manager for RVSI NER, a provider of lighting and imaging systems designed specifically for machine vision.

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Dirk Vermeersch
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