Which image quality technique is described as the best method to correct IR sensor image quality for uniform targets with little contrast?

• A. No paddle NUC
• B. Paddle NUC
• C. Auto Gain Control
• D. Digital Sharpening

Answer: (A)

Non-uniformity correction in infrared imaging needs a reference to align how each pixel responds. A paddle gives a known, uniform heat reference, which works well when you can inject a true flat-field scene. But for a target that is already uniform with little contrast, there isn’t enough scene variation to separate pixel-to-pixel differences from the actual image content. In that case, using a no-paddle (internal) NUC relies on the camera’s built-in calibration and dark-frame references to stabilize pixel responses without needing an external paddle, yielding more consistent image quality for uniform, low-contrast scenes. Auto Gain Control only adjusts brightness without correcting fixed-pattern nonuniformities, and Digital Sharpening enhances edges rather than addressing detector uniformity, so they don’t improve the uniform, low-contrast scenario.