IR Photography Tools

by Public Lab

A series of open-source, low-cost and accessible kits for multi-spectral photography.

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Details

Farmers, open source DIY scientists, and photography enthusiasts can use the cameras to measure plant health.

Infragram Point & Shoot Plant Cam

Infragram IR Camera on Tripod

The Infragram Point & Shoot takes high resolution photos of visible and infrared light, producing crisp, clear false-color images of plant health you can analyze with Infragram.org.

Its Internals are a modified Mobius Action Cam with an 87 degree angle lens, timelapse and still photography at a resolution of 2304 × 1536, and 1080p video. It is modified with a red filter and custom white balance.

Technical Specifications

  • Comes with SD card & 1/4-20 tripod mount
  • Max. video resolution: 1920×1080 @ 30fps
  • Bit rate: 18 Mbps
  • WDR Super Night Vision
  • .MOV file format
  • Very small size (61mm x 35mm x 18mm)
  • Weight: 38g
  • Angle of view: 87°
  • Time and date stamp on video
  • Supports up to 32GB MicroSD cards as per manufacturer, users report up to 128GB
  • Photo resolution up to 2304 x 1536
  • Supports time lapse photo shooting
  • Attachment sleeve with standard tripod mount
  • Loop recording, auto on/off
  • Interface: mini-USB

Questions? Check out the wiki!

Sample images

Infragram DIY Filter Pack

A piece of blue and red filter which you can use to turn your webcam or cheap point-and-shoot into an infrared/visible compositing “multispectral” camera. The filter allows you to take an infrared photo in the “red” channel of your camera, and a visible image in the “blue” channel. These can be used to measure photosynthetic activity; read more about the technique at http://publiclab.org/wiki/near-infrared-camera and http://publiclab.org/wiki/infragram.

Post-process your photos at Infragram.org, the free and open source image processing website which composites your images and helps you to assess plant health. Example image:

Filter Kit Example

Installing your filter:

Be aware that this is a relatively permanent change to your camera – you may not want to convert your expensive DSLR, for example! We’ve also found that not every webcam will produce good infrablue images – while all the legit point & shoot cameras are fine, we’re keeping track of which webcams do and don’t work well on this page: http://publiclab.org/wiki/infragram-convertible-cameras (if you’re doing your own experiments, as many already are, please add your findings there!) Additionally, we have discovered that a Rosco Red Fire filter works better for a larger variety of cameras and we have begun moving to produce red with blue filter packs.

Filter Kit Installation

The lens assembly removed and the infrared-blocking filter being extracted. Typically the IR filter that needs to be removed is glued to the backside of the lens assembly.

Questions? Check out the wiki!


Credits

Public Lab

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