plant-health
plant-health


Author Comment Last activity Moderation
cfastie "You can try other colors for doing a custom white balance. See this note: https://publiclab.org/notes/Claytonb/08-13-2016/plant-health-ndvi-white-b..." | Read more » almost 8 years ago
spandan1234 "The NDVI map looks good. But is there anything that can be done to better the results. The information required is totally visible here. Any sugges..." | Read more » almost 8 years ago
cfastie "Your photo looks good. An NDVI image made with the Photomonitoring plugin for Fiji also looks good. That might be a better way to process your phot..." | Read more » almost 8 years ago
spandan1234 "Hi, I have taken some images directly from a Canon SX280 with a red filter. Then I calibrated it using the reflectance from red paper in the shade ..." | Read more » almost 8 years ago
cfastie "The flexible PVC tubing is exactly the right size to slip inside the third smallest carp pole section. To stiffen the connection I insert a length ..." | Read more » about 8 years ago
ggallant "I'm impressed but I would have been AWED if it had been done with levitation. " | Read more » about 8 years ago
tonyc "You do have a rye sense of humor, Chris. A groan is my highest compliment. Some people prefer laughs, but I'm a groan man. Did you just tape the P..." | Read more » about 8 years ago
cfastie "Thanks, George. Come on Tony, you know the title is the best thing about this note. I'm sure Jeff gave me a barnstar because of the title. Yes the ..." | Read more » about 8 years ago
tonyc ""Graze Anatomy" Groan! What made you use the short pendulum shaft? Just desire to keep it off the ground as much as possible? Or was there somethi..." | Read more » about 8 years ago
ggallant "What a great article!! " | Read more » about 8 years ago
cfastie "There is a discussion of common materials with spectral data in the comments here: https://publiclab.org/notes/LaPa/03-31-2016/raspberry-noir-cam-..." | Read more » about 8 years ago
Gianni_Gadaleta "excellent article Chris. based on your experience you can advise us some targets already spectrally characterized, so we can finally start using th..." | Read more » about 8 years ago
cfastie "You betcha there's research about how mammal grazing and browsing impact carbon and nutrient cycles. A couple of my buddies from graduate school de..." | Read more » about 8 years ago
pdhixenbaugh "Awesome techniques! Is there any research on the guiding assumption that deer have an effect on the amount of carbon sequestered? I would imagine ..." | Read more » about 8 years ago
patcoyle "Chris, Very nice results. Interesting. I love the venison steak in the closing remarks of the video. Pat " | Read more » about 8 years ago
Claytonb "@Thorsten - you are correct the images were mislabeled. Thanks for the heads up. I have corrected the labels. Thanks again, Clayton " | Read more » over 8 years ago
Thorsten "@Claytonb, thanks for the test. I assume the images are correct but the channels in the image captions are somehow mixed up. I guess it should be: ..." | Read more » over 8 years ago
cfastie "Okay, looks good. You just have to put carriage returns or two spaces after a line or an image to make it insert a return. " | Read more » over 8 years ago
Claytonb "The filter size I have in the Canon S100's are 8.9 X 7.9 X 1. The sensor screws are each backed out approximately 3/4 turn from the factory positio..." | Read more » over 8 years ago
Claytonb "@cfastie Apologies Chris I had to fix the image layout and labels and couldn't edit right so I'm reposting.These are from the MidOpt DB 475/850 and..." | Read more » over 8 years ago
cfastie "Wow, the 660/850 camera focuses well across the image. That's good to know it can be done with a 1.0 mm thick filter. The 475/850 camera looks a li..." | Read more » over 8 years ago
cfastie "Hi @Claytonb, That's good to know. Did you compare the different channels to see if some showed any vignetting? A photo of an evenly lit solid fie..." | Read more » over 8 years ago
Claytonb "@cfastie -I can confirm that mounting the filter internally does correct the vignetting problem. I have mounted a DB475/850 and DB660/850 in place ..." | Read more » over 8 years ago
patcoyle "Thoughtful discussion. Thanks. " | Read more » over 8 years ago