What is thermal contrast in thermography?
What is thermal contrast in thermography? A) Image brightness B) Temperature difference C) Pixel density D) Frame rate Answer: B) Temperature difference The correct answer is B) Temperature difference because thermal contrast in thermography refers to the difference in temperature between two or more areas of an object or scene. Infrared thermography is based on detecting infrared radiation emitted by objects, and the thermal camera converts these differences in emitted energy into a visible thermal image. Without a measurable temperature difference, the camera cannot clearly distinguish one area from another, making it difficult to identify abnormalities, faults, or defects. For this reason, thermal contrast is one of the most fundamental concepts in infrared inspection and predictive maintenance. Every object with a temperature above absolute zero emits infrared radiation. The amount of radiation emitted depends on the object's surface temperature and emissivity. A thermal imaging came…
