What does NETD represent in thermography?

What does NETD represent in thermography?

What does NETD represent in thermography? A) Image resolution B) Thermal sensitivity C) Field of view D) Frame rate Answer: B) Thermal sensitivity NETD stands for Noise Equivalent Temperature Difference and it is one of the most important performance parameters in infrared thermography. It represents the smallest temperature difference that a thermal camera can detect and distinguish from noise in the image. In simple terms, it tells you how sensitive the camera is to very small changes in temperature. When a thermal camera captures an image, it doesn’t just measure temperature—it detects infrared radiation and converts it into a visible image. However, every electronic system has some level of noise. NETD defines how much temperature difference is required for the signal (actual thermal information) to stand out clearly above this noise. If the temperature difference is smaller than the NETD value, the camera may not be able to detect it accurately. A lower NETD value means better performanc…