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response:10996
response:10996


Author Comment Last activity Moderation
warren "Hi! The Mobius can be used as a webcam, and a converted lens is available in the store: https://publiclab.myshopify.com/collections/diy-infrared-ph..." | Read more » over 5 years ago
msfisher "Do you know if there is a place I can buy a usb camera already with the Wratten 25A, I got the original infragram which uses the blue channel, but ..." | Read more » over 5 years ago
cfastie "Yes, those photos are good. Ideal photos have some live plants, maybe some recently dead leaves, and some things that are not foliage. Outdoor phot..." | Read more » about 7 years ago
warren "Specifically, I think we need to encourage people to structure experiments around what these cameras do best at the moment -- comparisons between v..." | Read more » about 7 years ago
cfastie "I think you're right that subjective is the wrong word. Maybe qualitative. A plant with an actual NDVI value of 0.5 may have an infragram NDVI valu..." | Read more » about 7 years ago
warren "Hi, Chris - I've been plugged into several other projects and really didn't have time to do this properly, and there was some confusion over the we..." | Read more » about 7 years ago
cfastie "A standard coefficient is a tough nut. The amount you would want to shift the NDVI values will differ a lot among photos. Exposure and color balanc..." | Read more » over 7 years ago
warren "It looks to me like both offer pretty good differentiation, but that the red filtered version depresses NDVI values. But since we're not assuming a..." | Read more » over 7 years ago
warren "You're right - we need to display the colormap in the saved images too -- but we haven't had any time to do further development on Infragram.org, s..." | Read more » over 7 years ago
warren "The colormap is based on one of yours: " | Read more » over 7 years ago
cfastie "Yes, I can't say much without seeing the originals. Someone familiar with what infragram.org does might be able to infer something. When I follow ..." | Read more » over 7 years ago
warren "Do you think there's nothing you can infer without the originals? I'm guessing you want to look at the blue/red gap? These are the camera serial n..." | Read more » over 7 years ago
warren "I think they're gone, honestly. The bug seems to affect images captured via the webcam direct connection, but not images which were uploaded. I don..." | Read more » over 7 years ago
cfastie "Can you attach the original photos from the camera? Or do they exist only locked in the burly depths of Infragram for eternity? " | Read more » over 7 years ago
warren "These are all NDVI except the third, normal looking one which I labelled "original". Unfortunately a bug in infragram is not allowing display of th..." | Read more » over 7 years ago
cfastie "I'm confused about which images are photos from the camera and which are NDVI images. It would also help to know what the colors mean in NDVI images. " | Read more » over 7 years ago