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Author Comment Last activity Moderation
warren "Hi, you can use this simpler sequence for that: https://sequencer.publiclab.org/examples/#steps=ndvi,colormap This will just apply NDVI and the c..." | Read more » over 2 years ago
ThomasTaufan "how to process single multispectral image with the modified webcam and red filter? Because when I saw your example, it is processing 2 images that ..." | Read more » over 2 years ago
liz "Hi and apologies for the late response. The OpenROV community may have more folks working on this issue, for instance see https://forum.openrov.com..." | Read more » over 2 years ago
seoagency " Regular USB webcam works with the raspberry pi so that is another work around. I will find another use for the pi camera. I am happy to support Pu..." | Read more » over 3 years ago
cheneyshreve ":smiley: " | Read more » almost 4 years ago
warren "Just a note to self - as we plan out auto-registration features for this, could be good to look at #image-registration ! " | Read more » almost 4 years ago
warren "Cool! We've tested blue filters with Raspberry Pi cameras, and it works well although the separate camera technique does result in cleaner separati..." | Read more » almost 4 years ago
xose "During the leptos development we bought this board. We'are now playing with a point and shoot NDVI with raspi. I'll give the "IVMECH" board a chanc..." | Read more » almost 4 years ago
tech4gt "This is so cool @warren " | Read more » almost 4 years ago
warren "@imvec @xose too! " | Read more » almost 4 years ago
warren "@tech4gt @ccpandhare check it out! :-) " | Read more » almost 4 years ago
xose "Impressive Jeff. As soon as we check the outcome, this analysis will be carried on the pictures obtained ;) " | Read more » about 4 years ago
warren "@xose check this prototype out for your river timelapse project... Very crude but interesting? " | Read more » about 4 years ago
warren "Just found a good video for this: https://www.youtube.com/watch?v=qWRyZDxtZ1I " | Read more » over 4 years ago
warren "Found an online JavaScript based version -- a little rough but maybe it means we can expand this out and do it without installing anything: http://..." | Read more » almost 5 years ago
xose "Just for the record, It can be easily done using GNU/linux. Here two tutorials for Kdenlive (just GNU/linux) and OpenShot (the only multiplatform, ..." | Read more » over 5 years ago
mathew "On mac, the easiest way is to use Quicktime 7, File --> Open Image Sequence " | Read more » over 5 years ago
warren "And @cfastie provided some guidance for using Adobe Premier: https://publiclab.org/notes/glennwalquist/12-04-2016/monitoring-sargent-sand-mining-op..." | Read more » over 5 years ago
warren "I did find a bunch of YouTube videos of how to use different programs, but haven't done so myself: https://www.youtube.com/results?search_query=ma..." | Read more » over 5 years ago
mathew "you may want to connect with @John_Wells and the West Lothian Archaeological Society about filters for identifying underground features. They've b..." | Read more » over 6 years ago
rahulrajias "is it possible to operate/connect 2 pi cameras simultaneously with one pi ??? " | Read more » over 6 years ago
cfastie "Correct. If the Wratten 25A camera requires exposures that are too long, you can just shoot normal photos and use the red channel for VIS (so don't..." | Read more » over 6 years ago
Steven "Ok, so if I understand you correctly, using a standard PiCam with the IR filter un-removed and a Wratten 25A filter added to the PiCam, while takin..." | Read more » over 6 years ago
cfastie "If you use the Fiji plugin to make NDVI, you will not need the techniques in the video above. The plugin does the comparison of NIR and VIS for eac..." | Read more » over 6 years ago