Public Laboratory: Make an Infrared Camera
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Uploaded by jeferonix on Jun 23, 2011
(Note: this is a "near-infrared" camera and does not show heat.)
We've been modifying cheap cameras to take near-infrared (IR) photos. Though we cannot perceive it with our eyes the plants and other materials around us reflect wavelengths of light in infrared. Interestingly the sensors in digital camera can react to wavelengths of light in the near infrared. Presently IR light is filtered out from our cameras so that digital images look normal to us. Removing that filter allows us to pick up information in IR. If you want to learn more about it, take a look at our page about this project:
http://publiclaboratory.org/tool/near-infrared-camera
and the page about NDVI and NRG analysis using near-infrared images:
http://publiclaboratory.org/wiki/ndvi
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This video is lacking in critical information. "Infrared" is misunderstood and really should be taught via. light as a continuous spectrum, what ranges a camera can detect, and that Near-Infrared, Infrared, and Thermal Infrared are quite different when investigating spectral properties of plants and other things.
Mackinstyle 8 months ago