response:13028
response:13028


Author Comment Last activity Moderation
cfastie "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 » over 5 years ago
saangpe "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 » over 5 years ago
sujayj "@cfastie This is very interesting. Thank you! " | Read more » over 5 years ago
cfastie "Yes, we are going to change the pixel values in our photo. For each pixel in the photo we have taken of vegetation, we use the DN in the red channe..." | Read more » over 5 years ago
sujayj "@cfastie This is a very informative article. However, It isn't clear what is to be done after obtaining the final graph as you've shown. Are we goi..." | Read more » over 5 years ago
cfastie "The lamp post, the wall, and parts of the tree trunk are all very dark. It is a common artifact that NDVI computed for dark areas of photos is not ..." | Read more » about 6 years ago
spandan1234 "Hi cfastie, I need a little help here. Following your suggestions I did all the calibrations required and the results were great. But in the last f..." | Read more » about 6 years ago
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 » over 6 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 » over 6 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 » over 6 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 » over 6 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 » over 6 years ago
ggallant "I'm impressed but I would have been AWED if it had been done with levitation. " | Read more » over 6 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 » over 6 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 » over 6 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 » over 6 years ago
ggallant "What a great article!! " | Read more » over 6 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 » over 6 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 » over 6 years ago