Considerations with CoaXPress, Camera Link HS, 10 GigE Vision, and USB3 Vision

We have updated our ePaper on considerations when choosing a machine vision interface.  This free paper now includes details on USB3 Vision as well as updates on CoaXPress, Camera Link HS, 10 GigE Vision, and USB3 Vision. There are several video interface options currently available to connect various elements of imaging systems for machine vision, medical, outdoor and…

How to Measure the Fixed-Pattern Noise in Dark or DSNU: Repost from Harvest Imaging

Last week, we wrote about the differences between the camera and the image sensor and what camera manufacturers can do to improve image quality.  We have also talked about compensating for artifacts in the sensor.  Fixed-pattern noise is one such sensor imperfection which refers to the non-uniformity between pixels.  It can be described by two parameters DSNU (dark signal non-uniformity) and PRNU (photo…

Why the Modulation Transfer Function – MTF – also matters with camera selection, especially in NIR

The Optical Transfer Function (OTF) is an important specification of lens performance. The OTF describes both the amplitude and the phase of a signal. In most cases the former, most times indicated as is Modulation Transfer Function (MTF), suffices. Modulation, as it is a measure of the modulation depth (contrast) of an optical signal. The MTF is for that…

CCD vs. CMOS Image Sensors in Defense Cameras

CMOS sensor based defense cameras are gaining ground, but for long-term, reliable, high image quality applications, CCDs will continue to be the preferred option for a while. On February 8th, we discussed the CCD vs. CMOS sensors in machine vision cameras.  We discussed that CMOS image sensors have shown significant improvements in quality and are quickly approaching that…