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warren 6808 research notes and wiki edits | Admin

The creator of GrassrootsMapping.org and co-founder and Research Director for Public Lab, Jeffrey Warren designs mapping and civic science tools and professionally flies balloons and kites. Notable software he has created include the vector-mapping framework Cartagen and orthorectification tool MapKnitter, as well as open spectral database and toolkit Spectral Workbench.

He is Vice President of the board of the Open Source Hardware Association, on the board of alternative education program Parts and Crafts in Somerville MA, on the advisory board of Personal Democracy Media's WeGov and an advocate of open source software, hardware, and data. He co-founded Vestal Design, a graphic/interaction design firm in 2004, and directed the Cut&Paste Labs project, a year-long series of workshops on open source tools and web design in 2006-7 with Lima designer Diego Rotalde.

Jeff holds an MS from MIT and a BA in Architecture from Yale University, and spent much of that time working with artist/technologist Natalie Jeremijenko, building robotic dogs and stuff. To find out more, visit Unterbahn.com.


Barnstars



Melexis thermometer sensitivity is 5.5 um to 15 um

by warren about 6 years ago | 0 | 1,779 | 0

There's a great thread on lenses for IR thermometers here: http://www.electronics-related.com/...

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Roomba indoor air-quality sensing by RISD students

by warren about 6 years ago | 0 | 1,628 | 2

See more: https://www.flickr.com/photos/jeffreywarren/5396892754/ and read about the RISD t...

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Article: MODIS Detects Oil Spills in Lake Maracaibo, Venezuela

by warren about 6 years ago | 0 | 2,741 | 0

Abstract: "The article highlights the unprecedented capability of MODIS 250-m bands for coast...

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NRG image of Lima from balloon

by warren about 6 years ago | 1 | 2,520 | 0

From the Morflex untethered flight a couple weeks ago. Compare to: http://landsat.gsfc.nasa.gov/e...

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Focus shift in bifocal filter?

by warren about 6 years ago | 1 | 2,687 | 0

Does this image show focus shift? It seems like the infrared is in focus while the visible is not...

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Kinect for 3d mapping from a car

by warren about 6 years ago | 2 | 3,175 | 0

http://blog.decoratorpattern.com/2011/01/23/real-world-mapping-with-the-kinect/ I've been wond...

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Images arriving from loose flight over Lima

by warren about 6 years ago | 0 | 2,081 | 0

https://www.flickr.com/photos/jeffreywarren/5383641520/ more soon as they transfer

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Nice spectra

by warren about 6 years ago | 0 | 1,364 | 2

https://www.flickr.com/photos/jeffreywarren/5378506464/

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Grassroots Mapping is an Honorable Mention for Best Tech Project at the 2010 Kickstarter Awards

by warren about 6 years ago | 0 | 1,262 | 2

http://blog.kickstarter.com/post/2699478143/best-technology-project

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Great shot for NDVI

by warren about 6 years ago | 0 | 2,340 | 0

From 2nd day flights at FabLabLima

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Example NDVI usage in a vineyard

by warren about 6 years ago | 1 | 4,518 | 1


Bifocal infrared/visible filter on a camera

by warren about 6 years ago | 0 | 2,323 | 0



Bifocal infrared/visible filter at Lima workshop

by warren about 6 years ago | 6 | 1,484 | 0


NDVI test in Lima Peru

by warren about 6 years ago | 2 | 2,724 | 0

We've been talking about NDVI imaging and i finally gave it a try, using Photoshop.

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Very clear spectrum through pineapple

by warren about 6 years ago | 6 | 2,074 | 0

We had a workshop at Escuelab in Lima, using DIY spectrometers last Friday/Saturday, and one grou...

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Plant spectral timelapse (~7hrs)

by warren over 6 years ago | 2 | 1,659 | 0



Can we use back-illuminated CMOS video cameras for UV imaging?

by warren over 6 years ago | 3 | 3,135 | 0

This image shows a back-illuminated CMOS sensor's wavelength sensitivity.

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Front-illumination CCDs (as used in digital cameras) don't perform well in UV

by warren over 6 years ago | 13 | 2,185 | 1

and this is why: http://books.google.com/books?id=dtYs6a2kME8C&lpg=PA10&ots=PnUOR1kcOE&dq=uv%2...

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UV photography & quartz lenses

by warren over 6 years ago | 6 | 1,711 | 0

http://www.naturfotograf.com/UV_IR_rev07.html0

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Using the HITRAN database for spectral analysis

by warren over 6 years ago | 5 | 8,301 | 0

I'm really curious about our ability to identify methane and other gases with DIY spectroscopy in...

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Methane absorption band at around 1100nm

by warren over 6 years ago | 0 | 3,531 | 0

Playing with the HITRAN online database: http://hitran.iao.ru/molecule/bands/mol/60

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Normalized Difference Vegetation Index, NRG, and Landsat 7 bands

by warren over 6 years ago | 0 | 7,282 | 0

OK, for reference, NDVI is often based on Landsat images. Landsat 7 (the current landsat) has the...

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Scanning spectrometry video test

by warren over 6 years ago | 0 | 1,672 | 0


Bayou St. Denis in Cartagen Knitter

by warren over 6 years ago | 0 | 1,876 | 0

http://cartagen.org/maps/bayou-st--denis Pitch in sorting on http://MapMill.org!0

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Toy spectrometers arrived

by warren over 6 years ago | 0 | 3,153 | 0

They're great in helping us refine our DIY spectrometer design. See a spectrum I created with one...

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Is this government security warning on NOAA new?

marlokeno asked about 7 days ago

Answers by warren

Good guides on doing a photo survey of a site?

Accepted

warren asked about 9 days ago

Answers by warren

answered on Mar 14, 2017 0

answered on Mar 14, 2017 0

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JDEPC-OV05 camera intelligent exposure

tim_spec asked about 25 days ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about about 1 month ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about about 1 month ago

Answers by warren

How to get spectral data in excel or other formats

suha asked about 2 months ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about 2 months ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about 3 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about 3 months ago

Answers by warren

Ambient/Light Bulb Testing

idev247 asked about 4 months ago

Answers by warren

How do I make a video from a series of photos?

Accepted

warren asked about 4 months ago

Answers by warren

answered on Dec 05, 2016 0

answered on Dec 05, 2016 0

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Spectral Workbench recording time?

Accepted

dhale2 asked about 4 months ago

Answers by warren

Calibration of spectra fails

Paul_P asked about 4 months ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about 4 months ago

Answers by warren

Intensity for spectra too low?

chuynh451 asked about 5 months ago

Answers by warren

Is there an iPhone app for foldable spectrometer?

CanfieldC asked about 5 months ago

Answers by warren

Can you share a link to project documentation?

vwls asked about 5 months ago

Answers by warren

Error on calibrating uploaded spectrum

sarahcm asked about 5 months ago

Answers by warren

Can anyone help me troubleshoot my NDVI imagery?

abdul asked about 5 months ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about 5 months ago

Answers by warren

how to delete my spectra on Spectral Workbench

redleon asked about 6 months ago

Answers by warren


How can I reduce ambient light inside the Desktop Spectrometry Starter Kit?

Accepted

warren asked about 6 months ago

Answers by warren

answered on Sep 20, 2016 0

answered on Sep 20, 2016 0

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What's the best way to archive/store a timelapse video?

warren asked about 6 months ago

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answered on Sep 16, 2016 0

answered on Dec 08, 2016 0

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Does the new Question feature work?

Accepted

warren asked about 7 months ago

Answers by warren

Question: How to rename a set?

AndrewJamesLaplante asked about 9 months ago

Answers by warren

Question: How do I get the calibration user interface?

PeterDH asked about 10 months ago

Answers by warren

View these maps <a href='//mapknitter.org/profile/warren'>at MapKnitter.org &raquo;</a>

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