Non Uniformity Correction is used to correct what in imaging sensors?

• A. Sensor nonuniformities
• B. Weather interference
• C. Lens distortion
• D. Motion blur

Answer: (A)

Non Uniformity Correction targets fixed-pattern noise that comes from pixel-to-pixel differences in how the imaging sensor responds. Each pixel doesn’t react identically to the same light level because of variations in dark current and gain across the array. When you image a uniform scene, these differences show up as stripes or patches in the image. NUC uses calibration data to determine per-pixel offsets and gains and then applies those corrections to every frame, producing a much more uniform image. This concept is specifically about correcting sensor nonuniformities, not weather effects, lens distortions, or motion blur, which are addressed by other techniques.