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…