Using adaptive hot pixel correction
Flexible and dynamic
What's that dot in my image? If you're asking yourself this question, then you've probably just discovered a hot pixel. A certain number of hot pixels exist in all standard image sensors and are perceived as a defect in an image, as they appear brighter or darker than the other pixels. Hot pixels cannot be completely avoided in sensors, even if great care is taken during sensor production.
When a camera is being assembled, the hot pixels with the highest brightness values are detected and are permanently stored in the camera memory for subsequent hot pixel correction. However, this process only takes account of the situation at the time of testing. As the visibility of hot pixels increases together with exposure time, gain or sensor temperature, hot pixels other than those stored in the camera memory may also be perceived as defects in images, depending on the image content. Many more than the calibrated number of hot pixels may become visible as a result of these factors.
So, wouldn't it be a really nifty idea if hot pixels could be detected dynamically in the application directly under all operating conditions? Well, that's exactly what can now be done thanks to "adaptive hot pixel correction", available in the IDS Software Suite as of Version 4.82.