Editorial Digests
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Lenses and cameras focus on security applications
May 14, 2013
In security and surveillance systems, it may be necessary to capture a very large field of view (FOV) of a scene, using multi-camera systems or cameras that employ automatic focus and aperture control. In border monitoring, for example, relatively large areas can be monitored using multiple cameras onboard remotely piloted vehicles. Similarly, in ground-based surveillance, wide angle lenses can be used to detect panoramic views of a scene. In this series of articles, we take a look at the different types of lenses and camera systems used for a number of security and surveillance applications. This editorial digest brought to you by Vision Systems Design. |
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Choosing lenses for high-performance imaging
April 15, 2013
Continuing advances in high-resolution sensors with higher pixel densities and smaller pixels are challenging optics manufacturers to produce lenses with increased performance. To understand how lenses can affect the performance of imaging systems, it is necessary to grasp the physics behind diffraction, lens aperture, focal length, and the wavelength of light. Other factors such as lateral and chromatic shift must also be understood into account to ensure optimum camera/lens performance. This series of articles gives an in-depth look at the factors that need to be taken into account when specifying such lenses and provides examples of the effects these have on high performance machine vision systems. Sponsored by:
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Automating Automotive Assembly
March 21, 2013
Producing high-quality automotive parts requires carefully monitoring the manufacturing process to ensure that each part is correctly marked, meets specific tolerances, and is free from defects and scratches. To meet these criteria, automotive parts manufacturers are deploying machine-vision systems for a variety of inspection tasks including measuring the tolerances of fastenings, checking the hemming of independently stamped panels such as hoods, decks, and fenders, wheel inspection and whether parts such as plugs, rivets, and screws are correctly placed on the car chassis. This Editorial Digest brought to you by Vision Systems Design. |
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OCR/OCV meet challenging tasks
March 15, 2013
Whether it be identifying packaged fruit cases, pharmaceutical packages or determining the color of identification tags, optical character recognition and verification (OCR/OCV) systems is now commonplace in many factories around the world. In this series of articles, you will read how barcodes are dynamically created and affixed to cases of produce to allow them to be tracked and traced throughout the packaging process, how the technology is reducing the number of falsely rejected packages in a pharmaceutical application and how machine vision and custom color image-processing combined with pneumatic actuators sort clothing identification tags at 300 parts per minute. This Editorial Digest brought to you by Vision Systems Design. |