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CCD versus CMOS, or should it now be CMOS vs. CCD?

Posted by Gretchen Alper on Tue, Feb 25, 2014

Okay so we just talked about how you may not have to make a choice between a CCD or CMOS image sensor.  However, since that is not the case at the moment (examples expected in 2015) what to do if you need to make an industrial camera selection now?

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Topics: CCD vs. CMOS

CMOS versus CCD – what if you don’t have to choose?

Posted by Gretchen Alper on Fri, Feb 14, 2014

The latest requirements for 3D metrology and inspection in the semiconductor industry require high resolution and fast frame rate cameras.  For these applications, CMOS-based cameras are required, with the trade-off of lower dynamic range and less sensitivity compared to CCD-based cameras. CMOS image sensors continue to get dramatically better fueled by the extensive resources and R&D in the consumer market, but what if it was possible to have no trade-offs?

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Topics: CCD vs. CMOS

Dynamic Range (DNR) and Signal to Noise Ratio (SNR) for CCD and CMOS image sensors

Posted by Gretchen Alper on Mon, Oct 7, 2013

The capability of a machine vision camera to capture the details of a scene is defined by several parameters with dynamic range at the top of the list.  High contrast images require a high dynamic range.  One problem is there can be different ways to calculate dynamic range, which makes it difficult to compare cameras and sensors on paper.  Also, dynamic range and the signal to noise ratio (SNR) are sometimes considered interchangeable for CCD and CMOS image sensors and cameras providing further confusion. 

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Topics: Vision System Optimization, CCD vs. CMOS

2/3” vs. 1/2” vs. 1/3” Full-HD image sensor size for global security applications

Posted by Gretchen Alper on Thu, Sep 5, 2013

In theory, bigger pixels on full-HD CCD image sensors are better for global security applications because they are more sensitive for improved low light performance.  The drawback is that bigger optics are required so size, weight, power, and cost (SWaP-C) requirements are challenged.  As many systems are upgrading from standard definition to full-HD cameras or adding HD daylight cameras for full motion video, the question is how to find the optimal balance.

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Topics: Sensor Technology, CCD vs. CMOS

Rolling Shutter or Global Shutter Modes for CMOS Cameras

Posted by Gretchen Alper on Tue, Jan 15, 2013

This blog post is repost of the following regarding considerations with rolling shutter or global shutter modes for CMOS cameras that we thought you would find interesting:

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Topics: Sensor Technology, CCD vs. CMOS

Adimec’s Industrial Imaging and Machine Vision Blog: Best of 2012

Posted by Gretchen Alper on Sun, Dec 30, 2012

It is that time of year again when we reflect on the past year, and plan for the next.  2012 was a big year for Adimec as we celebrated our 20 year anniversary.  Hopefully our blog has been a source of helpful information over the last year. 

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Topics: Interface Technology, CCD vs. CMOS, Image Quality Improvements

How the consumer market drives machine vision

Posted by Gretchen Alper on Wed, Dec 5, 2012

We tend to think of consumer cameras and industrial cameras as quite different.  Industrial cameras or machine vision cameras are typically PC-based, much more robust, and optimized for using the image for analysis or measurement.  Consumer cameras, on the other hand, have functionality optimized for human viewing such as color matching and lighting adjustments.  Not as much attention needs to be paid in the camera design to withstand big temperature variations or vibration. 

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Topics: CCD vs. CMOS

CCD vs. CMOS: Image Artifacts to Consider with CMOS Image Sensors

Posted by Gretchen Alper on Fri, Aug 24, 2012

The high-resolution and frame speed combination with CMOS image sensors is very attractive and the major driving factor towards the move to CMOS with industrial cameras.  A consideration with CMOS image sensors are the different types of defects present and whether the camera manufacturer corrects for them. 

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Topics: CCD vs. CMOS

CCD vs CMOS Entering the Slope of Enlightenment

Posted by Gretchen Alper on Tue, Jun 12, 2012

The trend in 2011 towards increased CCD image sensor use over CMOS, was contrary to what was expected.  We believe this is just a slow adoption of new technology and not an indication of any long-term trends.  Regardless of the differing available data we still believe that CMOS image sensors will be used significantly more in machine vision.  CMOS image sensors are just coming out the other side of the Hype Cycle as defined by Gartner Inc

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Topics: Sensor Technology, CCD vs. CMOS

CCD vs. CMOS: Increased CCD use in Machine Vision?

Posted by Gretchen Alper on Fri, Jun 8, 2012

There has been a lot of talk (us included) about the use of CMOS image sensors taking over CCD image sensors in machine vision.  Recent data reported in the 2012 AIA Machine Vision Camera Study, shows that the opposite was true in 2011.  We at Adimec still believe CMOS image sensors will gain significant adoption in machine vision in the coming years, which we will explain further in another blog.

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Topics: Sensor Technology, CCD vs. CMOS