Comments

marlokeno commented on Sizing particles in microscope images at Portland Science Hackday : "Hi, @mathew and @SimonPyle - Terrific work! After seeing the demonstration mathew gave at the barnraising in November '16, and then looking at Ca..." | Read more » about 9 hours ago
marlokeno commented on Silica (frac) Sand Research : "Hi, @bkleist- One thought regarding the moisture obscured lens-if the camera is in an enclosure, a small fan to circulate air should help with cond..." | Read more » about 10 hours ago
FrankA commented on Mobius NDVI : "https://youtu.be/Vff--FWRfTo addendum how toi file : sorry about the Clip quality " | Read more » about 11 hours ago
warren commented on Reduce light inside foldable PL spectrometer : "Oh great! Do check out this node.js lib designed originally for work in a raspberry pi! https://github.com/publiclab/spectral-workbench.js " | Read more » 4 days ago
xose commented on Reduce light inside foldable PL spectrometer : "By the way, the research on the foldable spectrometer got a little bit delayed because of this. But just delayed ;D " | Read more » 5 days ago
xose commented on Reduce light inside foldable PL spectrometer : "Hey @warren It was a pleasure to assist to the inner workings of the lab and really great info to go on with the testings Definitely I'll post this..." | Read more » 5 days ago
warren commented on WebJack: Testers needed! : "Well, just asking about the positive pin shown on the Fritzing diagram -- 5 volts -- which is not on the diagrams on this page. Thanks! " | Read more » 5 days ago
rmeister commented on WebJack: Testers needed! : "Not sure what 5V pin you mean, but yes a 4-pin cable is need to connect to the microphone input of smartphones/mobile devices. " | Read more » 6 days ago
warren commented on Web-based fisheye-removal prototype for correcting lens distortion : "Hi, i dug into the code a bit and found the section I think we need to modify, but it's WebGL, and relatively obscure: https://github.com/jywarren..." | Read more » 6 days ago
warren commented on Web-based fisheye-removal prototype for correcting lens distortion : "Indeed, i used Scott's posted images and got the same issues. But then I tried cropping them to square, and re-running them, using these settings:..." | Read more » 6 days ago
warren commented on Reduce light inside foldable PL spectrometer : "Hello @xose! Very glad to meet you over audio today. I came across this: https://quitter.se/notice/8940101 And was very excited to see it -- woul..." | Read more » 6 days ago
warren commented on WebJack: Testers needed! : "Hi, I noted that on the WebJack page, the illustration shows the use of the 5v pin, but here it's not shown. Is it essential? I seem to have been t..." | Read more » 6 days ago
warren commented on ShenangoChannel.org - a dashboard for monitoring and sharing : "@DMerwitz @marlokeno @stevie @bkleist @cfastie - just thought you'd be interested to see this effort -- great use of timelapse to monitor smokestac..." | Read more » 6 days ago
warren commented on Web-based fisheye-removal prototype for correcting lens distortion : "Cool, thanks. I took a pic of a grid with my Mobius (an old one, i'm not actually sure of the lens) and got this: I couldn't get a perfect undis..." | Read more » 6 days ago
eustatic commented on Web-based fisheye-removal prototype for correcting lens distortion : "See https://publiclab.org/notes/eustatic/11-11-2014/a-method-for-distorting-mobius-action-cam-imagery-in-gimp-foss " | Read more » 6 days ago
SimonPyle commented on Automating ImageJ for particle image analysis : "@warren: The link above was the most recent version, though I just added a GNU GPLv3 license and created a github repository: https://github.com/si..." | Read more » 7 days ago
cfastie commented on Size of aerial imagery from balloons and kites : "Mathew, that diagram is a little misleading. A lens with a 45° field of view (focal length of 44mm equiv.) would capture a photo with a long side e..." | Read more » 7 days ago
cfastie commented on Can we use rPi camera for fluorescence measurement in plants : "How bright is the fluorescence? What color, and how long does it last? Do you shine a light on the leaves to make them fluoresce? What color? How l..." | Read more » 7 days ago
mathew commented on Automating ImageJ for particle image analysis : "There is a large folder of sample image sets avaialble. I put a smaller set together here: https://publiclab.org/notes/mathew/10-07-2016/sizing-ima..." | Read more » 7 days ago
mathew commented on analyzing passive monitors : "You can see more about the shape descriptors for each particle here: https://publiclab.org/notes/mathew/09-19-2015/using-imagej-to-process-passive-..." | Read more » 7 days ago
mathew commented on analyzing passive monitors : "The image analysis creates: perimeter of each particle area of each particle circularity of each particle Circularity is the ratio between the..." | Read more » 7 days ago
warren commented on Automating ImageJ for particle image analysis : "Is there any sample input/output sets from going through this process, manually or automatically? I was thinking that a good test/spec might inclu..." | Read more » 7 days ago
warren commented on analyzing passive monitors : "Hi! Just re-reading, is it right that the image analysis produces (as it's complete output): perimeter of each particle area of each particle ..." | Read more » 7 days ago
warren commented on Automating ImageJ for particle image analysis : "Hi! Is Simon's macro still at the URL listed above? Or is there a more up-to-date version, potentially open sourced? Thanks! " | Read more » 7 days ago
ives commented on Size of aerial imagery from balloons and kites : "That's the same measure I always adopted. For 100m above the ground level, 100m coverage at the smaller side of the picture. " | Read more » 8 days ago
cfastie commented on Hack a camera to make you own DIY Near Infrared device : "That seems to be one simple way to do it. " | Read more » 10 days ago
Annchy1809 commented on Hack a camera to make you own DIY Near Infrared device : "Aaaa I see! So its all about the adding the contrast and projecting the image straight from the camera? " | Read more » 10 days ago
cfastie commented on Hack a camera to make you own DIY Near Infrared device : "It would be possible to make a version of that device. It requires a digital projector which will be an expensive component (but maybe under $100)...." | Read more » 10 days ago
Annchy1809 commented on Hack a camera to make you own DIY Near Infrared device : "cfastie , I am sorry but I can not resist to have one more question! Is it also possible to create this viewer : http://www.portable-ultrasound-sc..." | Read more » 10 days ago
warren commented on Designing Tools for Learners (Not Users) : "I've been thinking more about this and recalled Sara Hendren's great piece All Technology is Assistive, which I love. I started thinking that ther..." | Read more » 10 days ago