Which description best captures the use of SWIR as described?

• A. Terrain mapping
• B. Low-light surveillance at night (animals)
• C. Medical imaging
• D. Headlights slash tail lights during a vehicle follow, interior/exterior lighting at a compound

Answer: (D)

Short-wave infrared imaging detects infrared radiation in a band that highlights warm sources and certain lighting, often usable when visible light is poor or obscured. This makes it especially good for following a vehicle by clearly capturing headlights and taillights, and for noticing interior or exterior lighting at a site, even in darkness or amid smoke, dust, or haze. Those capabilities align with surveillance scenarios where identifying and tracking targets relies on bright IR features, which is why this use best fits SWIR. Other options describe tasks that rely on different imaging strengths or conditions (terrain details, medical contexts, or wildlife photography), which don’t align as directly with the described infrared lighting tracking.