Which statement about MSX is true?

• A. MSX overlays visible-light details onto the infrared image in real time.
• B. MSX enhances infrared resolution by upsampling
• C. MSX calibrates the detectors automatically
• D. MSX filters out thermal noise

Answer: (A)

MSX is a display technique that adds the sharp, high-resolution details from a registered visible-light image to the infrared image. By overlaying these visible-edge details onto the infrared data in real time, the resulting image shows clearer outlines and textures while preserving the actual thermal information. This makes it easier to identify features like edges of buildings or objects that might be subtle in the infrared alone.

The other statements don’t describe what MSX does. It doesn’t physically increase the infrared detector’s native resolution by upsampling, it doesn’t automatically calibrate the detectors, and it isn’t primarily a tool for filtering out thermal noise.