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| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I would encourage people to try to get the plants in their Infragram photos to be rather orange, like this: It might help to do the custom whi..." | Read more » | over 10 years ago | |||
| cfastie | "In the camera you use in this example, press "Menu" while filling the scene with the blue paper. Then press Function/Set to begin taking photograph..." | Read more » | over 10 years ago | |||
| warren | "BTW, this post is now the 7th most popular research note (by view count) on the site! " | Read more » | over 10 years ago | |||
| warren | "Another way to approach this is to standardize everything as much as possible, so it follows a well-described, simple, standard process, which we c..." | Read more » | over 10 years ago | |||
| cfastie | "Hi jalarid, Yes that is correct. There is lots of active development about which cameras and filters work best, and how to get the most meaningful ..." | Read more » | over 10 years ago | |||
| warren | "That's right, jalarid! " | Read more » | over 10 years ago | |||
| jalarid | "Hi, so if I am understanding this correctly I only need to remove the IR filter from my camera and replace it with Rosco #2007 VS Blue filter. At t..." | Read more » | over 10 years ago | |||
| mathew | "kykytos-- I put Chris out of the filter business . If you are interested in helping us do research on filters, please e-mail me. mathew at publiclab " | Read more » | over 10 years ago | |||
| cfastie | "kykytos, Sorry, I am out of the business of mailing #2007 filter. We are currently testing several different filters with different cameras to choo..." | Read more » | over 10 years ago | |||
| kykytos | "I'd like some of the Rosco filter too. Thanks! " | Read more » | over 10 years ago | |||
| cfastie | "Hi jaluna, NDVI tells us something about plant health because it quantifies the difference between light that is absorbed by plant pigments and use..." | Read more » | over 10 years ago | |||
| jaluna | "Hello cfastie! I follow your job with interest, but there are a thing that I not understand well. You say "A filter can be used to block all red l..." | Read more » | over 10 years ago | |||
| liz | "@Jeff i really like this NDVI color gradient that replaces violet with black. " | Read more » | over 10 years ago | |||
| cfastie | "This set has the Rosco and the halogen. https://spectralworkbench.org/sets/show/366 " | Read more » | over 10 years ago | |||
| warren | "Can you link to the spectra so I can give it a try? Thanks. " | Read more » | over 10 years ago | |||
| cfastie | "Jeff, Your first question: I subtracted the Rosco spectrum from the halogen light spectrum, but the result made no sense at all. So I just used the..." | Read more » | over 10 years ago | |||
| warren | "I've been modifying lots of cameras with the new superblue filter (using the Rosco filter you sent). For those (like webcams) which don't have cust..." | Read more » | over 10 years ago | |||
| warren | "Apparently, from my phone, not nearly well enough. There are disadvantages to a mobile friendly website... Using baseline subtraction in Spectral ..." | Read more » | over 10 years ago | |||
| cfastie | "That's an excellent color table for the heat metaphor. This topic of how to display NDVI deserves much more attention. "It'd be neat to test the r..." | Read more » | over 10 years ago | |||
| warren | "I've been messing with different NDVI gradients, and have been trying to get one which shows "cool" colors below zero, and doesn't circle back arou..." | Read more » | over 10 years ago | |||
| geobduffy | "Thanks for the quick response. I'd be happy to be a Low Alt Aerial Photo Guinea Pig for testing :) " | Read more » | over 10 years ago | |||
| cfastie | "Ned's plugin is available under downloads here: https://github.com/nedhorning/PhotoMonitoringPlugin. I still has a bit of a learning curve but offe..." | Read more » | over 10 years ago | |||
| geobduffy | "Do you have a source for Ned's ImageJ plugin? I'm very curious about that. Also, I may have gotten ahead of myself with excitement...Do you think t..." | Read more » | over 10 years ago | |||
| geobduffy | "Thank you for sharing this information. Your results are very promising. I am struggling to come up with a way to capture imagery that can be used ..." | Read more » | over 10 years ago |