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warren 7577 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, 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



Third thermal photo

by warren over 6 years ago | 0 | 1,690 | 0

Here we're starting to see some actual features. I'm still not sure what the striping represents,...

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Thermal photo 2

by warren over 6 years ago | 0 | 1,647 | 0

OK, we're starting to see things. But I think this is mainly due to our ceiling-mounted space hea...

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First thermal photo

by warren over 6 years ago | 0 | 1,649 | 0

Obviously we have some issues. Interestingly you can see that we're scanning faster than the refr...

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Gowanus Canal balloon tests

by warren over 6 years ago | 0 | 1,243 | 2

<object type="application/x-shockwave-flash" width="400" height="225" data="https://www.flickr.co...

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Guides wiki page

by warren almost 7 years ago | 0 | 1,554 | 2

http://publiclaboratory.org/wiki/guides

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Pyrex thermal infrared transmissivity

by warren almost 7 years ago | 0 | 4,743 | 0

Here's a $55 pyrex lens that you can measure temperature through with a thermal IR sensor: htt...

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Melexis thermometer sensitivity is 5.5 um to 15 um

by warren almost 7 years ago | 0 | 1,795 | 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 almost 7 years ago | 0 | 1,644 | 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 almost 7 years ago | 0 | 2,755 | 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 almost 7 years ago | 1 | 2,548 | -1

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 almost 7 years ago | 1 | 2,739 | 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 almost 7 years ago | 2 | 3,196 | 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 almost 7 years ago | 0 | 2,100 | 0

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

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Nice spectra

by warren almost 7 years ago | 0 | 1,376 | 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 almost 7 years ago | 0 | 1,272 | 2

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

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Great shot for NDVI

by warren almost 7 years ago | 0 | 2,359 | 0

From 2nd day flights at FabLabLima

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Example NDVI usage in a vineyard

by warren almost 7 years ago | 1 | 4,571 | 0


Bifocal infrared/visible filter on a camera

by warren almost 7 years ago | 0 | 2,337 | 0


Bifocal infrared/visible filter at Lima workshop

by warren almost 7 years ago | 6 | 1,497 | 0


NDVI test in Lima Peru

by warren almost 7 years ago | 2 | 2,753 | 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 almost 7 years ago | 6 | 2,099 | 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 almost 7 years ago | 2 | 1,673 | 0


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

by warren almost 7 years ago | 3 | 3,200 | 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 almost 7 years ago | 13 | 2,203 | 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 almost 7 years ago | 6 | 1,725 | 0

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

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Using the HITRAN database for spectral analysis

by warren almost 7 years ago | 5 | 8,381 | 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 almost 7 years ago | 0 | 3,580 | 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 almost 7 years ago | 0 | 7,678 | 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 almost 7 years ago | 0 | 1,685 | 0


Bayou St. Denis in Cartagen Knitter

by warren almost 7 years ago | 0 | 1,893 | 0

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

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Best PLab demo ideas for a large group?

pdhixenbaugh asked about 7 days ago

Answers by warren

Helium alternative

Accepted

mrw0116 asked about 10 days ago

Answers by warren

How do I assemble the mini-balloon kit?

asnow asked about 13 days ago

Answers by warren

What's happening at the 2017 Barnraising?

warren asked about 17 days ago

Answers by warren

How do I easily set up a Raspberry Pi SD card?

warren asked about 20 days ago

Answers by warren

What sessions would people like to have at the 2017 Barnraising?

warren asked about 25 days ago

Answers by warren

answered on Oct 27, 2017 2

answered on Oct 27, 2017 1

answered on Oct 27, 2017 1

answered on Oct 30, 2017 1

answered on Oct 30, 2017 2

answered on Oct 31, 2017 1

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How do I access the wiki?

partsandcrafts asked about 25 days ago

Answers by warren

Need your feedback on Tag pages

tommystyles asked about about 1 month ago

Answers by warren

answered on Nov 15, 2017 1

answered on Nov 15, 2017 0

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How big is the filter in the infragram DIY filter pack?

robotfarms asked about about 1 month ago

Answers by warren

Has anyone used a RasPi camera in a DIY microscope?

Accepted

bmela asked about about 1 month ago

Answers by warren

What are good sources of cheap bulk giant mylar balloons?

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warren asked about about 1 month ago

Answers by warren

Is there an offline version of Mapknitter?

Accepted

stevie asked about 2 months ago

Answers by warren

How big are silica particles, in microns?

warren asked about 2 months ago

Answers by warren

What should we do at LEAFFEST?

cfastie asked about 2 months ago

Answers by warren

answered on Sep 19, 2017 2

answered on Sep 19, 2017 1

answered on Sep 19, 2017 2

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How can I add credit for main photo on Wiki?

Accepted

Zengirl2 asked about 2 months ago

Answers by warren

What are some sources of new aerial imagery of Harvey damages?

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warren asked about 2 months ago

Answers by warren

answered on Sep 12, 2017 0

answered on Sep 13, 2017 0

answered on Sep 16, 2017 0

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How do I join a volunteer Disaster Response Team for flooding?

Accepted

warren asked about 2 months ago

Answers by warren

What is the best way to formalize connecting needs with offers?

bsugar asked about 2 months ago

Answers by warren

answered on Sep 08, 2017 0

answered on Sep 08, 2017 0

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How much do different oil pollution tests cost?

Accepted

warren asked about 2 months ago

Answers by warren

What does oil pollution mean for my health?

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warren asked about 2 months ago

Answers by warren

What could teenagers do to support Harvey response efforts?

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warren asked about 2 months ago

Answers by warren

How do I collect a sample for laboratory analysis?

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warren asked about 2 months ago

Answers by warren

How big are smoke particles, in microns?

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warren asked about 3 months ago

Answers by warren

Calibaration or switching scale?

jayjay70 asked about 3 months ago

Answers by warren

How To Make Time Lapse Spectrometer

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LightWaveResearch8000 asked about 4 months ago

Answers by warren


How do I install a bootloader on a Riffle data logger?

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warren asked about 5 months ago

Answers by warren

Assembly completed but the camera doesn't work.

Accepted

1987123 asked about 5 months ago

Answers by warren

Desktop Spectrometry Kit to arduino?

jjoll asked about 5 months ago

Answers by warren

How can we get rid of spam on the main PL page?

marlokeno asked about 5 months ago

Answers by warren

Can anyone help with weather station recommendations?

Accepted

stevie asked about 5 months ago

Answers by warren

Cheap, lightweight GoPro alternatives for aerial mapping?

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warren asked about 6 months ago

Answers by warren

answered on Jun 12, 2017 0

answered on Jun 14, 2017 0

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How can real-time camera monitoring be set up?

cherylh asked about 6 months ago

Answers by warren

answered on May 16, 2017 0

answered on Jun 19, 2017 0

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What are the health effects related to fine particles of calcium carbonate?

Accepted

stevie asked about 6 months ago

Answers by warren

answered on May 12, 2017 0

answered on May 12, 2017 1

answered on May 16, 2017 0

answered on May 22, 2017 1

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Decibel meters for iPhones?

Accepted

warren asked about 7 months ago

Answers by warren

Is this government security warning on NOAA new?

marlokeno asked about 8 months ago

Answers by warren

Good guides on doing a photo survey of a site?

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warren asked about 8 months ago

Answers by warren

answered on Mar 14, 2017 0

answered on Mar 14, 2017 0

answered on Apr 10, 2017 0

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JDEPC-OV05 camera intelligent exposure

tim_spec asked about 9 months ago

Answers by warren

what causes spectral colors to be reversed?

vgoebel asked about 10 months ago

Answers by warren

Fraunhofer Lines at higher resolutions?

stef asked about 10 months ago

Answers by warren

How to get spectral data in excel or other formats

Accepted

suha asked about 10 months ago

Answers by warren

GoPro Hero HD first version- Making full spectrum( Removing IR filter)

Accepted

suman asked about 10 months ago

Answers by warren

Can you process multiple images at the same time?

JonathanM32 asked about 11 months ago

Answers by warren

orientation of slit vs that of diffraction grating

wlkwong asked about 11 months ago

Answers by warren

Video Infragram

Accepted

jfd asked about 11 months ago

Answers by warren

Ambient/Light Bulb Testing

idev247 asked about 12 months ago

Answers by warren

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

Accepted

warren asked about 12 months ago

Answers by warren

answered on Dec 05, 2016 0

answered on Dec 05, 2016 0

answered on Jul 23, 2017 0

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Spectral Workbench recording time?

Accepted

dhale2 asked about 12 months ago

Answers by warren

Calibration of spectra fails

Paul_P asked about 12 months ago

Answers by warren

Why copy calibration does not apply?

aelobo asked about 12 months ago

Answers by warren

Intensity for spectra too low?

chuynh451 asked about about 1 year ago

Answers by warren

Is there an iPhone app for foldable spectrometer?

CanfieldC asked about about 1 year ago

Answers by warren

Can you share a link to project documentation?

vwls asked about about 1 year ago

Answers by warren

Error on calibrating uploaded spectrum

sarahcm asked about about 1 year ago

Answers by warren

Can anyone help me troubleshoot my NDVI imagery?

abdul asked about about 1 year ago

Answers by warren

How to process images using a mobius with an IR lens?

Accepted

miguel_rosas asked about about 1 year ago

Answers by warren

lightweight air quality sensors for a weather balloon

glenc asked about about 1 year ago

Answers by warren

answered on Oct 12, 2016 0

answered on Jun 19, 2017 0

Show all 2 answers »

how to delete my spectra on Spectral Workbench

redleon asked about about 1 year ago

Answers by warren

Can I upgrade a DIY spectrometer with a Raspberry Pi camera?

warren asked about about 1 year ago

Answers by warren

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

Accepted

warren asked about about 1 year 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 about 1 year ago

Answers by warren

answered on Sep 16, 2016 0

answered on Dec 08, 2016 0

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Has anyone used a timelapse camera in stream monitoring?

stevie asked about about 1 year ago

Answers by warren

Question: What is the Open Source Community's Take the MIT License?

Accepted

nshapiro asked about about 1 year ago

Answers by warren

Does the new Question feature work?

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warren asked about over 1 year ago

Answers by warren

How to rename a set on Spectral Workbench?

Accepted

AndrewJamesLaplante asked about over 1 year ago

Answers by warren

Question: How do I get the calibration user interface?

Accepted

PeterDH asked about over 1 year ago

Answers by warren

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

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