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How to Calculate Image Resolution

The detail in an image is determined by resolution. The shorter the lens focal length, the wider the field of view. Greater than about 90° most lenses start to show curved, barrel distorted images that compress the image at the edges. Rectilinear lenses such as those using Theia Technologies’ Linear Optical Technology™ don’t exhibit barrel distortion and thus maintain image resolution out to the edge of the image.

Media Conversion in Video Security and Surveillance Systems 

One common component that is often overlooked in video systems is the quality of the cabling infrastructure used to transport these video images from camera to monitor or from camera to storage device. Designing your video network around coaxial, un-shielded twisted pair (UTP) or fiber-optics will have tremendous impact on the quality, bandwidth and distance capabilities of your video security and surveillance system. This white paper outlines methods to implement these cabling infrastructures for surveillance networks.

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Green Products and Solutions

Today there are more products than ever that actively provide residential and commercial green solutions, promote sustainability, and offer both environmental and economic benefits for both the security industry and end users alike.

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Jamie Qualk, LEED AP BD+C, vice president of SSRCx, shares his thoughts on various forms of renewable energy and how they fit into the overall energy landscape of the U.S.
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Mobile Devices

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SDM 2011 Industry Forecast Study
2011 Industry Forecast Study
The health and viability of the electronic security industry is measured each year through SDM's Industry Forecast Study, conducted annually since 1981.
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