cfastie 299 research notes and 550 wiki edits | Joined about 6 years ago | Admin

The ecology and history of forests and landscapes, and new ways to see these things. High-resolution stitched images of vegetation, including low elevation aerial photography and multispectral imaging. Design and distribution of 3D printed aerial photography rigs and microcontroller gadgets via the KAPtery. Tweeting these things.

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Public Lab Barnraising 2014, day 3

by cfastie over 4 years ago | 0 | 1,262 views | 0


Public Lab at Science for Action

by cfastie over 4 years ago | 0 | 27 views | 2


Santa's first stop

by cfastie over 4 years ago | 2 | 30 views | 2


Potent Potable Puzzle

by cfastie over 4 years ago | 4 | 121 views | 2


Holiday Beverage Whodunit

by cfastie over 4 years ago | 6 | 126 views | 3


MultispeQ fluorescence

by cfastie over 4 years ago | 9 | 578 views | 1


Reproducibility

by cfastie over 4 years ago | 7 | 147 views | 3


Event38 NDVI over Cocodrie

by cfastie over 4 years ago | 3 | 138 views | 1


Spherical KAP over Cocodrie

by cfastie over 4 years ago | 2 | 1,899 views | 4


Fixed wing over Cocodrie

by cfastie over 4 years ago | 4 | 95 views | 1


All Barnraising Tweets

by cfastie over 4 years ago | 0 | 39 views | 0


Barnraising Tweets

by cfastie over 4 years ago | 0 | 56 views | 0


Mapping the LUMCON lawn

by cfastie over 4 years ago | 1 | 1,964 views | 1


The KAPtober Collection

by cfastie over 4 years ago | 1 | 136 views | 2


NIR and water

by cfastie over 4 years ago | 1 | 2,871 views | 4


LEAFFEST aerials

by cfastie over 4 years ago | 1 | 173 views | 2


LEAFFEST 2014 accounting

by cfastie over 4 years ago | 6 | 169 views | 8


The LEAFFEST Line

by cfastie over 4 years ago | 2 | 267 views | 0


New NDVI colormap

by cfastie over 4 years ago | 30 | 2,946 views | 8


L E A F F E S T

by cfastie over 4 years ago | 4 | 135 views | 4


Titan 2 IR flight

by cfastie almost 5 years ago | 2 | 91 views | 3


Can open source beat this?

by cfastie almost 5 years ago | 11 | 532 views | 2


Titan 2 IR

by cfastie almost 5 years ago | 5 | 199 views | 3


NE Barnraising 2014

by cfastie almost 5 years ago | 1 | 177 views | 5


View these maps at MapKnitter.org »

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Comments

Comment Last activity Moderation
"There has been a lot of information about measuring turbidity posted at Public Lab. Don Blair posted an excellent review of the common approaches t..." | Read more » over 1 year ago
"Kestrel makes a well-thought-out data logger called Kestrel Drop. The Drop D2 logs temperature and humidity apparently for six months. You can retr..." | Read more » over 1 year ago
"Spectrometers based on consumer cameras, like the Public Lab spectrometers, can be built so they provide good information about which narrow wavele..." | Read more » over 1 year ago
"First, mark the position of the three screws. When you remove them, count the number of rotations needed to unscrew them. So you will need marks on..." | Read more » over 1 year ago
"The rules for flying drones are different from the rules for flying kites or balloons. The rule that flying is prohibited within five miles of an a..." | Read more » over 1 year ago
"The Public Lab desktop spectrometer is quite capable of making a spectral graph of sunlight reflected from grass. The curve will differ from the pr..." | Read more » over 1 year ago
"An infragram photo file does not contain enough information to produce a normal color image of the scene. The infragram filter blocks most of the b..." | Read more » over 1 year ago
"So, the values in the graph are computed as follows? The values from the camera for each channel (R, G, B) range from 0 (no light) to 255 (maximum..." | Read more » over 1 year ago
"The signature of ripe coconuts might be distinguishable from some of the other things in the photos, but not necessarily everything else in the pho..." | Read more » over 1 year ago
"I don't know of published results of studies comparing red and blue filters. Red light has been used for the visible part of the NDVI equation for ..." | Read more » over 1 year ago
"Computing NDVI requires a value for the "brightness" of both red light and near infrared light for the same part of a scene (or for each pixel). Un..." | Read more » over 1 year ago
"Yes, I agree that this is a different approach to an issue that has had a lot of effort directed at software solutions. This is a purely hardware s..." | Read more » over 1 year ago
"Hi Adam, Those thermoelectric fans are very smart. This guy on YouTube shows how to make one with a $3.00 thermoelectric module and parts recycled..." | Read more » over 1 year ago
"Oh, you're right. The older lut used in the images above can be found here: https://publiclab.org/wiki/photo-monitoring-plugin " | Read more » over 1 year ago
"The lut file for use in Fiji is available for download here: https://publiclab.org/notes/cfastie/08-26-2014/new-ndvi-colormap In a comment to that..." | Read more » over 1 year ago
"What Fiji does is a bit confusing. In a normal histogram the x-axis is brightness so 0 (at the left end) is black and 255 (at the right end) is max..." | Read more » over 1 year ago
"Fiji made that histogram of the color NDVI image. The NDVI image is not an RGB color image (it is a single channel image with a color look up table..." | Read more » over 1 year ago
"I don't think there is any debate about what those words mean, but I find it hard to use them correctly all the time. The only sensors I have used ..." | Read more » over 1 year ago
"I used Fiji (ImageJ) to make the histograms of the NDVI images. Fiji will make a couple of different kinds. " | Read more » over 1 year ago
"It's really good to see these flight trajectories. I think it's an important way to document a flight. I have not been able to figure out how to m..." | Read more » over 1 year ago
"I like the idea of linking to other notes that set the stage for the current one. I was using the response:##### powertag for a while, but that doe..." | Read more » over 1 year ago
"Thanks Jeff. That's a really interesting question. I did not include step by step instructions, so a complete novice would have to do some research..." | Read more » over 1 year ago
"Well-commented code is always helpful. At the novice level at which I work, good comments are sometimes hard to come by. I have often stolen uncomm..." | Read more » over 1 year ago
"That's a good question about the DVD plastic fluorescing. I don't know of anyone who has raised that question about the Public Lab spectrometers. I..." | Read more » over 1 year ago

cfastie was awarded the Basic Barnstar by warren for their work published in Superblue.


cfastie was awarded the Basic Barnstar by warren for their work published in Graze anatomy.


cfastie was awarded the Basic Barnstar by liz for their work published in Holiday Beverage Whodunit.


cfastie was awarded the Basic Barnstar by stevie for their work published in Nano particle monitoring.


cfastie was awarded the Basic Barnstar by Elidacanup for their work published in Broadening.


cfastie was awarded the Basic Barnstar by david-days for their work published in Compost is hot, says Riffle.


cfastie was awarded the Basic Barnstar by academicfora for their work published in A standalone aerial sensor pod.


cfastie was awarded the Empiricism Barnstar by warren for their work published in Grating angle.


cfastie was awarded the Empiricism Barnstar by xose for their work published in Real time and temperature.


cfastie was awarded the Photo Documentation Barnstar by warren for their work published in A DIY low power timer.


cfastie was awarded the Photo Documentation Barnstar by Hudonnoodles for their work published in Spherical KAP over Cocodrie.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in NE Organizers Summit.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in LEAFFEST 2014 accounting.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in Public Lab Organizers Summit, 2014.


cfastie was awarded the Photo Documentation Barnstar by stevie for their work published in Putting sensor data to work.


cfastie was awarded the Photo Documentation Barnstar by todgobblins for their work published in Soaring Riffle.


cfastie was awarded the Video Documentation Barnstar by warren for their work published in SNOWFEST the Movie.


cfastie was awarded the Video Documentation Barnstar by mathew for their work published in Making the aluminum frame of an aerial camera rig (video).



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