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updated 4 days ago
Camera exposure matrix
updated 16 days ago
Use Image Sequencer for NDVI plant analysis with 2 images
updated about 2 months ago
Red vs. blue filters for NDVI
updated over 4 years ago
Prototype: filter map tiles in real-time in a browser with ImageSequencer (NDVI Landsat)
updated 2 months ago
DIY Spectrometry Workshop in Lima, Peru
updated over 7 years ago
Set up a Mobius Action Cam for timelapse
updated 9 months ago
Change the white balance (or other configuration) on a Mobius camera
MapKnitter map of Hog Bayou, Mobile County
updated 9 months ago
Villamaria. Lima, Peru.
updated almost 6 years ago
Timbertown NDVI. Chelsea, Michigan.
updated over 5 years ago
Occupy Oakland 12PM
updated over 6 years ago
Occupy Oakland 10AM
Lake Merritt, Oakland California
Engineers Without Borders Regional Meeting at Cal Poly (NDVI)
Salisbury Swamp NDVI. Salisbury, Vermont
Save The Bay NRG. Providence, Rhode Island.
updated about 6 years ago
Save The Bay Infrared. Providence, Rhode Island.
Foothills Community Park (NRG), Boulder, Colorado
Newtown Creek (North). Brooklyn, NY
Mapped by Jeffrey Warren, Roxana Garrido, Morflex, Diego Rotalde, FabLabLima
Cartographer: Jeffrey Warren
Published by warren
-12.136478977990128 N, -76.97399975585003 E
Capture date: 2011-01-18T00:00:00
Publication date: 2011-01-26T00:00:00
License: Public Domain
We flew at the athletic fields of Ricardo Palma University, on east side of Lima, and after a turbulent flight, the string broke, and the camera flew off, leaving us depressed and exhausted.
We had built a large airfoil-shaped balloon from three sleeping bags tied together with a 2 meter wide, 1/2 inch thick PVC tube which we found near the field. It generated so much lift in the light winds that it broke right through the 50-pound dacron kite string and flew away.
Luckily we'd put Beno's name and phone number on the camera rig, and he got a call that night; a friend picked up the camera 15 miles south of the launch site, and it was full of imagery from around 2 miles up (estimate). Amazing!
This camera had a bifocal filter, half infrared pass, half visible light pass. You can read more about this infrared balloon technique here:
This flight was unique because it was the first infrared/visible multispectral camera we'd attempted to fly on a high altitude flight. With the lucky break of recovering the camera even though the string broke, this dataset was amazing to work with -- I spent some hours making both an infrared and a visible stitched image, shown here:
An alternate version of this is viewable here, using a heat-map color gradient to represent the data using the NDVI, or Normalized Differential Vegetation Index technique:
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