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Home » Authors » Mark Williamson

Mark Williamson

Mark Williamson is is managing director of Stemmer Imaging Ltd in the UK and a member of Stemmer Imaging AG’s senior leadership team. For more information, call +44 1252 780000, email [email protected] or visit www.stemmer-imaging.co.uk.

Articles

ARTICLES

VS 0522 Vision Figure 1
Vision & Sensors | Vision

Developments in Vision Systems: Deep Learning, Rapid Development Environments And Factory Integration

The move to Industry 4.0 requires better connectivity to enable data trasnfer and sharing between all components within the factory structure.
Mark Williamson
May 1, 2022

Deep learning is now more user-friendly and practical than ever and together with other vision technologies opens up new application areas, making the inclusion of vision inspection as part of Industry 4.0 even more beneficial.  


Read More
QM VS 0322 Lenses Feature Image
Vision & Sensors | Lenses

Optimizing Machine Vision Lenses For Different Wavelengths

The wavelengths used in any machine vision application have significant implications in choosing the ost appropriate lens.
Mark Williamson
March 1, 2022

Lenses play a crucial role in the quality of the images produced by a machine vision system since they determine the sharpness of the image on the camera sensor. Lenses can influence image quality in a variety of ways.


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Multizone inspection

Developments in Machine Vision Camera Interfaces

A number of data transfer hardware interfaces have been developed specifically for the machine vision sector over the years, including cameralink, GigE vision, USB3 vision, CoaXpress and Cameralink HS.
Mark Williamson
November 30, 2020

The choice of camera data interface is a vital consideration both in traditional PC-based machine vision systems and in the increasingly important area of embedded vision.


Read More
Figure 1. Track testing

Choosing the Right Cables and Connectors for Machine Vision

All cables should be fully tested to check they have the correct point-to-point connections.
Mark Williamson
May 5, 2020

Machine vision systems consist of a number of component parts and all of these must be optimized for the best possible performance. Choosing the right cables and connectors to link cameras to a vision system or PC is one important part of this and is driven by the particular application.


Read More
Figure 1. Modulation transfer function

Machine Vision Lens Performance

A number of factors are important in lens design, including lens resolution, spatial distortion, and uniformity of illumination.
Mark Williamson
May 1, 2019

The cameras, lenses and illumination used in a machine vision system all make significant contributions to the overall quality of the images that are produced. The rapid developments in CMOS image sensor technology over the last few years have created significant challenges for lens manufacturers. 


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Figure 1. Machine vision system selection influences (1)

Keeping Up Standards in Machine Vision

The use of industrial vision as part of Industry 4.0 and smart factories has been discussed extensively in recent years, but requires machines to speak the same language.
Mark Williamson
November 15, 2018

Machine vision systems consist of several component parts, including illumination, lenses, camera, image acquisition and data transfer, and image processing and measurement software.


Read More
Figure 1. Correcting for chromatic aberration

Optics for High Accuracy Machine Vision

The best lens for a machine vision application is one that’s specifically selected for the sensor used in the camera.
Mark Williamson
April 30, 2018

High accuracy machine vision applications are dependent on the production of reproducible, high quality images, whether for inspection or measurement purposes.


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Figure 1. How the modulation transfer function (MTF) of a lens affects an image, as it is projected onto a sensor. Source: Stemmer Imaging

Choosing a Lens for Machine Vision

Not surprisingly, with the enormous range of sensor formats and resolutions available in machine vision cameras, there are many options for lenses.
Mark Williamson
September 1, 2017

All machine vision systems rely on the production of an image of sufficient quality to allow the required measurements to be made.


Read More
Vision & Sensors - Imaging Standards

Meet the Machine Vision Standards

Data transmission standards for machine vision
Mark Williamson
December 3, 2012
Since the emergence of CameraLink, the first dedicated data transmission standard for machine vision applications, the industry has made major moves to develop new standards to meet the rapidly developing technological advances in camera technology and an ever-expanding range of applications for vision. 

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