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Moving from CCD to CMOS daylight cameras in global security systems

Posted by Gretchen Alper on Wed, May 25, 2016

There is a move from CCD to CMOS daylight cameras in global security systems with the increase in low light performance (better NIR sensitivity and lower noise) of the latest CMOS global shutter image sensors. Here are several articles that offer some tips on how to take advantage of the latest technology:

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Topics: Sensor Technology

How to interpret the Dynamic Range and Signal to Noise Ratio (SNR) in image sensor and industrial camera specifications

Posted by Gretchen Alper on Wed, May 18, 2016

With machine vision applications, some of the most important specifications beyond resolution and frame speed to determine whether the camera meet the measurement requirements, are full well capacity, Signal to Noise Ratio (SNR), and dynamic range (DR) specifications.  Interpreting these values from specification sheets can be challenging though.  The full well capacity and SNR definitions that are used for the image sensor do not always match those that are used in the specification sheets of the resulting industrial camera. Dynamic range in particular can be confusing as there are different ways to calculate it. 

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Topics: Image Quality Improvements

Reducing noise and increasing camera frame rate through binning - on sensor binning versus digital binning

Posted by Gretchen Alper on Tue, May 10, 2016

There are always small changes (at no additional product cost) that can be made to increase the performance of your machine vision camera and thus to your overall inspection or metrology system.  Perhaps there are low light levels in the system and you need to improve image quality. Binning which is adding the charge of 2 or more pixels together can both increase signal to noise ratio (SNR) and frame rate. Higher signal-to-noise ratio is achieved due to reduced read noise contributions and adding  signals (pixels) together. By adding pixels together the noise component will be reduced due to averaging. Because fewer pixels are processed with binning, a higher camera frame rate can be achieved to increase the system throughput. 

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Topics: Image Quality Improvements

OnSemi Python 25k based camera and high-speed multi-camera system demonstrated at the 2016 Vision Show Boston

Posted by Gretchen Alper on Thu, May 5, 2016

At the 2016 Vision Show in Boston this week, Adimec demonstrated the new S-25A80/CXP as well as other metrology camera innovations. 

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Topics: New Adimec Products

Adimec adds OnSemi Python25k-based camera to 25 Megapixel options showcased at The Vision Show 2016

Posted by Gretchen Alper on Tue, Apr 26, 2016

SAPPHIRE quality plus Quad CXP configuration offers most reliable, low power implementation for ultra high-resolution, high-speed camera

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Topics: New Adimec Products

Auto White Balance - Color imaging under changing lighting conditions

Posted by Gretchen Alper on Mon, Apr 25, 2016

It is a challenge to obtain an accurate color representation on your video screen when imaging a scene from sunrise to sunset, e.g. imaging under changing lighting conditions.  White balance is a function inside cameras to overcome this challenge.  

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Topics: Optical Enhancements

CCD versus CMOS in low light global security applications demonstrated at SPIE DCS 2016

Posted by Gretchen Alper on Fri, Apr 22, 2016

At the 2016 SPIE DCS 2016, Adimec demonstrated rugged CCD cameras and latest generation (Sony IMX250) CMOS based rugged cameras with color in low light.

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Topics: CCD vs. CMOS

CMOS Daylight Cameras with Adaptive Resolution at SPIE Defense, Security, and Sensing 2016

Posted by Gretchen Alper on Tue, Apr 12, 2016

Ruggedized, high-resolution digital HD and beyond CMOS cameras to upgrade from CCD to expand identification capabilities in low light

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Topics: New Adimec Products

3 Tricks to leverage new CMOS technology and upgrade from CCD

Posted by Gretchen Alper on Mon, Apr 11, 2016

We have talked about the move from CCD to CMOS in global security systems with the increase in low light performance (better NIR sensitivity and lower noise) of the latest CMOS global shutter image sensors. 

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Topics: CCD vs. CMOS

New CMOS image sensors with smaller pixel size can replace older cameras with no change in optics

Posted by Gretchen Alper on Fri, Mar 25, 2016

For many global security systems, the optical format was decided by the initial choice of the image sensor, for instance a 1/3” VGA sensor or 2/3” HD CCD image sensors with pixel sizes of 6 or 7 µm. These legacy systems are now due for upgrades to take advantage of the sensitivity, lower read noise and higher pixel throughput of the latest CMOS image sensors.  CMOS process technology improvements have allowed for shrinking of pixels while preserving important imaging parameters: (QE, charge handling capacity per square µm, and more). BUT much smaller pixel sizes can result in a much bigger overhaul of the system than is desired such as a change in optics and displays.  

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Topics: Optical Enhancements