MTFlens

Objectives: View objects through a different set of “eyes”. Spot what is under a layer of paint in artwork. See how near IR can be used as a security measure for currency.

Overview: An infrared camera can allow us to see wavelengths beyond what our eyes can detect. Near IR can be used for medical diagnostics, to study agriculture health and even in seeing different layers of art.

MTFimage quality

Modulation transfer function image processing

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MTFOptics

Paint pigments become invisible within the near infrared wavelength range. Near IR cameras project IR light onto an object. The image the camera picks up therefore does not see the painting that our eyes see, but rather sees below the painting. Many artists would sketch with mediums other than paint and then make changes to the final product in paint. We can see those sketches with the near IR camera.

​​Supplies: Near Infrared camera, tripod, tv, camera to tv connection cable, camera power cable, red painting (Wilbur, Meinel, OSC logo), $5, or $10 bill

The same can be done with currency. An ink that is invisible in the near IR can be added as a stripe on a bill for security reasons.