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Adimec’s Industrial Imaging and Machine Vision Blog: Best of 2014

Posted by Gretchen Alper on Mon, Dec 22, 2014

Hopefully our blog has been a source of helpful information over the last few years.  Here are quick links to some of our most popular blogs this year in case you missed them.

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Topics: Applications, Vision System Optimization, CCD vs. CMOS, Image Quality Improvements

How Active Sensor Control Provides Reliable Pixel Data for Metrology Cameras

Posted by Gretchen Alper on Fri, Sep 5, 2014

The benefits of greater accuracy and throughput from high-resolution cameras can only be realized if the entire image sensor is usableMetrology cameras are optimized for uniformity and dynamic range among other parameters to provide the most accurate starting image.  Metrology cameras are relied on when the pixel information is used as measurement input such as with process control systems for semiconductor and electronics manufacturing and others.   

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Topics: Image Quality Improvements, Vision System Optimization

Precise sensor mounting and alignment for sharp images in all conditions

Posted by Gretchen Alper on Fri, Apr 25, 2014

The accuracy and quality of the imaging data achieved in industrial OEM cameras partly depends on the accuracy of the sensor mounting and alignment processes.  Despite this, it may not be a consideration in the machine vision camera selection process

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Topics: Image Quality Improvements

Low read noise for low noise applications and low light cameras but also other considerations

Posted by Gretchen Alper on Fri, Mar 21, 2014

One of the big advances in image sensor development (both CMOS and CCD) is a reduction in read noise. Read noise is basically the noise added to the pixel when reading out the image sensor.  The noise signal is added by the electronic circuits involved in the conversion of charge to the digital signal.  With CMOS image sensors this process is all done on chip. With CCD, read noise is added both on-chip and off-chip as analog to digital conversion (ADC) is done off-chip. 

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Topics: Image Quality Improvements

Blooming suppression and Smear rejection with CCD machine vision cameras

Posted by Gretchen Alper on Tue, Jan 21, 2014

The new Truesense Imaging (TSI) CCD sensors: the 1080p KAI-02170 Interline CCD image sensor, and the 4 megapixel KAI-04070 Interline CCD image sensor, were designed to provide superior image quality for the most demanding imaging applications.   The Adimec OPAL-2070 and OPAL-4070 CCD machine vision cameras are the latest members of the OPAL series designed around these sensors. The larger pixel size of the image sensor enables gains in light sensitivity, dynamic range, smear rejection, and blooming suppression for applications with difficult image capture conditions or precise image quality requirements.

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Topics: Image Quality Improvements

Camera Dynamic Range Requirements for Machine Vision versus Visual Applications

Posted by Gretchen Alper on Tue, Oct 29, 2013

In photographic terms, dynamic range indicates the ability of a camera to reproduce the brightest and darkest portions of an image.   It is one of the key parameters for determining the right machine vision or industrial camera for your system [for more background information on using dynamic range to compare cameras, click here].  But there is more to dynamic range beyond the value provided on the specification sheet - there are different situations with varying requirements such as machine vision or viewing applications. Even in machine vision (controlled lighting situations), there can be different needs depending on the system environment.  There is functionality that can be added to the camera for better performance in specific conditions.  Here are more details…

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Topics: Image Quality Improvements

Innovations in Metrology with Active Sensor Control on 25 Megapixel Cameras

Posted by Gretchen Alper on Thu, Aug 22, 2013

Metrology system manufacturers are moving to ultra large area scan cameras (such as 25 Megapixel CMOS cameras) to improve accuracy and throughput, but defects in the image can negate the performance enhancements. 

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Topics: Image Quality Improvements

Bayer Color versus 3-CCD, Hyperspectral Imaging, the Photon Transfer Curve, and more

Posted by Gretchen Alper on Wed, Jul 31, 2013

In case you missed any of our posts earlier this year, here our some of our most popular articles in 2013 related to industrial imaging systems and applications.

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Topics: Image Quality Improvements, Applications

More Usable Pixels on the Vita 25k 25 Megapixel Sapphire Cameras with Active Sensor Control

Posted by Gretchen Alper on Wed, Jul 24, 2013

The increased field of view and/or throughput provided by 25 Megapixel Cameras can only be a real benefit for inspection and metrology applications with uniform images and linear pixel response.  Active Sensor Control (ASC) is an automated way in a camera to correct for various deviating pixel conditions in an image sensor, such as fixed pattern noise (FPN), photo response non-uniformity (PRNU), shading, among others.  With ultra high-resolution cameras, the impact of these effects can be even greater.  For more background information on Active Sensor Control and how to test it in your system, please click the links to the previous blogs. 

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Topics: Image Quality Improvements

See the Image Quality Improvements on Vita 25 Megapixel Sapphire Cameras with Active Sensor Control

Posted by Gretchen Alper on Thu, Jul 18, 2013

In CMOS image sensors the pixel response on exposure varies – more excessively than in CCD – from pixel to pixel. The image quality is also affected by a lot of external factors such as lighting, optics, temperature, etc.  This is especially so for ultra high-resolution (8 MP and greater) image sensors and cameras.  These effects can be calibrated to ensure there are no artifacts in the image.  Adimec allows for this calibration in the camera to be done easily in the field to ensure compensation for all disturbances, including those due to system configurations or that may change over time, through Active Sensor Control (ASC)

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Topics: Image Quality Improvements