Public Lab is launching a new 🎈 Mini Balloon & Kite Kit as part of Kickstarter Gold -- take a look!


Comments

nedhorning commented on "Test images" for multispectral image processing : "How about testing it on subsets of satellite imagery? You can pick the 3 bands and the band order you want for the testing and can compare that to ..." | Read more » 13 days ago
ccpandhare commented on "Test images" for multispectral image processing : "Thanks for the amazing explanation and reference, @warren! I'll be grateful for your help @nedhorning and @warren :) " | Read more » 13 days ago
ccpandhare commented on How to verify generated NDVI Images? : "Yes @warren, Thanks for the link. I have noted that. But we had a problem with these algorithms not working fairly with the other image... What can..." | Read more » 13 days ago
warren commented on How to verify generated NDVI Images? : "Also note connection to this question: https://publiclab.org/questions/warren/06-21-2017/test-images-for-multispectral-image-processing " | Read more » 13 days ago
warren commented on How to verify generated NDVI Images? : "My hunch is that since we can't display negative values for pixels, all negative values in the "high-contrast" image are being zeroed out, but in t..." | Read more » 13 days ago
warren commented on "Test images" for multispectral image processing : "Hi, Ned - i'm not asking about calibration at this point, just for a way to empirically test (in the sense of automated testing -- https://en.wikip..." | Read more » 13 days ago
ccpandhare commented on How to verify generated NDVI Images? : "Hi @cfastie, For the algorithm Which I have put up above, I get a pretty faint image http://preview.ibb.co/eFnfza/vegetation_01_ndvired_new.jpg ..." | Read more » 13 days ago
warren commented on How to verify generated NDVI Images? : "Part of the exciting part of this test suite (that we posted a request for here: https://publiclab.org/questions/warren/06-21-2017/test-images-for-..." | Read more » 13 days ago
ccpandhare commented on How to verify generated NDVI Images? : "Wow Thanks a lot! This is the output I got: https://preview.ibb.co/dLEw5F/vegetation_01_ndvired.jpg Hope this is what it should look like. It even ..." | Read more » 13 days ago
cfastie commented on How to verify generated NDVI Images? : "The algorithm looks good. I guess the next question is does Infragram use the exact same algorithm? (only coders know for sure) The test image you..." | Read more » 13 days ago
cfastie commented on Mini Pearl Jam : "I checked on the Mini Pearl logger in the compost pile today and swapped SD cards. It was still logging after 7.5 days, so that's a new record. I n..." | Read more » 14 days ago
cfastie commented on The Squid and the Rok : "I have been meaning to do a post about the Tangerine Rokkaku. I have yet to have a full KAP session with it so I hope that will happen soon. Here i..." | Read more » 14 days ago
warren commented on The Squid and the Rok : "Can we get a better look at that gorgeous Rokaku?! Is it hard to travel with? " | Read more » 14 days ago
warren commented on The Squid and the Rok : "Great advice on the "tilting" fix -- this affected one of Liz's squids and we struggled to adjust the bridle, eventually giving up. I posted this ..." | Read more » 14 days ago
MadTinker commented on KnowFlow: automatic water moniter : "@liz Sounds great. I think there are three parts and I'll probably ask for advice on posting as things develop: the build, the deployment, and the ..." | Read more » 14 days ago
warren commented on MapKnitter Annotations Plugin: Preliminary Specification : "Deleted some spam! " | Read more » 15 days ago
warren commented on A sweet way to attach a camera to a kite or balloon line : "Super -- added this to the Kickstarter FAQ as well :-) " | Read more » 15 days ago
liz commented on KnowFlow: automatic water moniter : "Hi @madtinker, oh there's interest! as @shanlter said, the best place to document your build is by clicking the blue button "Click here to replicat..." | Read more » 15 days ago
shanlter commented on KnowFlow: automatic water moniter : "@MadTinker, awesome!! I'm trying to get familiar with Public Lab's logic as well, I guess the best way to document is by replicating an activity? A..." | Read more » 15 days ago
liz commented on A sweet way to attach a camera to a kite or balloon line : "wow awesome Chris! I tagged this as an activity for photo-rig so it will get even more visibility! " | Read more » 15 days ago
cfastie commented on Graze anatomy : "The photos were processed with the Photo Monitoring plugin for FIJI which has a complete users guide. If you have any questions you can describe an..." | Read more » 15 days ago
saangpe commented on Graze anatomy : "You could give more details about how to process the images with Fiji and tried to replicate this but I can not make the results conform to the sca..." | Read more » 15 days ago
guolivar commented on Is it important to account for humidity using optical particulate matter monitors? : "You're right, the effect of humidity would be to change the "apparent" size but it's not just increasing the number of particles that now fall in t..." | Read more » 16 days ago
warren commented on Collaboratively write the new Pocket Guide to Grassroots Mapping : "Saw some great suggestions -- i also added a "wind scale" table riffing on the Beaufort scale, with advice on what to fly in what conditions (types..." | Read more » 16 days ago
MadTinker commented on KnowFlow: automatic water moniter : "@shantler @rockets et al... FWIW - I ordered the (majority) of the parts needed for a KnowFlow related system (sans the DO sensor and the enclosure..." | Read more » 16 days ago
Garret commented on ramanPi - The 3D Printable Raspberry Pi Raman Spectrometer : "The links to the hackaday website are no longer functional. Does anyone know of a working website still hosting the Build Instructions? " | Read more » 16 days ago
Sidney_AstroPlant commented on AstroPlant RPi sensory system : "Using NIR LEDs seems like a good option to look into and I'm happy to hear that I might not have to deal with extensive filtering! I just got a res..." | Read more » 16 days ago
liz commented on KnowFlow: automatic water moniter : "Hi @xose , @shantler did create a method page, and this now appears there as an activity! Check it out: https://publiclab.org/wiki/knowflow " | Read more » 16 days ago
MadTinker commented on KnowFlow: automatic water moniter : "@rockets Thanks for the summary. I thought I was going to have to move in a different direction, but this clears things up. Cheers. " | Read more » 16 days ago
jeffalk commented on Is it important to account for humidity using optical particulate matter monitors? : " My quick perusal of the attached pdf didn't find anything about effects of humidity. What you say about humidity effecting size makes sense but ..." | Read more » 16 days ago