A camera inherits a lot of its characteristics from the sensor that is being used. This is a collection of our blogs that discuss the sensor technology and characteristics.

Read noise versus shot noise – what is the difference and when does it matter?

When determining the best metrology camera, one of the first considerations is to determine the dominant noise source.  This can help you prioritize the most important camera parameters, such as sensitivity or dynamic range. In this post we will consider temporal noise sources that vary with time including shot noise and read noise. With this, it…

CCD versus CMOS: blooming and smear performance

For many years CCD image sensors and cameras have offered advantages in image quality such as greater dynamic range, better noise performance, and better uniformity. For this reason, CCD cameras were still used in many of the most demanding machine vision systems needing the highest accuracy or in global security systems where sensitivity in low…

Binning to increase SNR and frame rate with CCD and CMOS industrial cameras

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.  Binning is one example.  There has been a trend with latest generation image sensors to increase resolution while also reducing the pixel size…

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

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…

How is hyperspectral imaging advancing agriculture?

Hyperspectral imaging involves dividing light into thousands of small bands to gain detailed information.  This compares with multi-spectral, which deals with far fewer bands. Every pixel has a complete spectrum in it and this can be used for a variety of applications including mineralogy, agriculture, astronomy, and surveillance.  With lightweight hyperspectral imaging systems mounted on…

Bayer Area Scan Color Cameras compared to 3-CCD Color Cameras, part 1

There is a perception that color precision can only be achieved with 3-chip prism-based (3-CCD, multiple-chip prism, etc.) video cameras.  Because of advances in sensor design, knowledgeable camera designers can now get excellent color images from Bayer patterned image sensors.  These images are so good that all consumer digital SLR cameras use a single chip…

Imec demonstrates a compact, low cost, fast hyperspectral imaging solution, part 2

Hyperspectral imaging combines imaging and spectroscopy, which can increase measurement accuracy for a variety of applications (for more information on hyperspectral imaging, click here).  At the 2013 Photonics West Exhibition, Imec demonstrated their approach. Here is a video of Andy Lambrechts of Imec explaining their solution: http://www.photonicsonline.com/doc.mvc/multispectral-imaging-for-subject-classification-0001   Imec approached Adimec to collaborate as the…