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comparison
comparison


Author Comment Last activity Moderation
theodoreeugene779 "Dear Madam / Sir. We, OOO "KULIGINSKOE LIMITED LIABILITY COMPANY As a Re-Seller company and a representative to a major refinery in Russian Federat..." | Read more » over 2 years ago
tanyadike " Anyone interested in buying Nigerian BLCO crude oil sample? " | Read more » about 3 years ago
gauravano "test " | Read more » about 4 years ago
ashishkochaar "Hope is the best thing when you see that there is no another option I have here to get the things. I hope for the best and expect a little. Like ye..." | Read more » almost 5 years ago
platteferguson "So my million dollar question do I buy 3 or 4 inspire 2.0 with extra batteries or go for the new Ebee SQ ag drone for 12-15k with the multi spec wi..." | Read more » over 5 years ago
warren "Ah, i see you've already approached this topic, sorry to repeat! " | Read more » almost 6 years ago
warren "Also - I noticed you're using a compact fluorescent lamp as a light source - but are you measuring absorption? In that case you probably want a bro..." | Read more » almost 6 years ago
iamkat "Ah that's really helpful to know, thank you! " | Read more » almost 6 years ago
cfastie "Thanks for the details. After you use a CFL to calibrate the spectrometer, replace the CFL with another light source. If the spectrometer is not d..." | Read more » almost 6 years ago
iamkat "Hi Chris, what do you mean by a standard lycopene extraction? The UV spec of lycopene in ether can be found here http://link.springer.com/article/..." | Read more » almost 6 years ago
cfastie "The sensors in consumer cameras have very low sensitivity at wavelengths shorter that 400 nm. Some cameras are slightly sensitive down to about 380..." | Read more » almost 6 years ago
cfastie "Kat, Do you have a standard lycopene extraction? How do know what the spectrum of lycopene should look like? Are you using a fluorescent lamp to ..." | Read more » almost 6 years ago
Claytonb "@Artichoke23 - What I have seen in testing is that a red filter will give you much greater contrast and sensitivity in crop vigor. A good example i..." | Read more » almost 6 years ago
Artichoke23 "@Claytonb, This is a great post and comparison. I have a couple questions, I'm using the V2 NoIR Raspberry Pi camera and #2007 filter they provide ..." | Read more » almost 6 years ago
everydayduffy "Thank you @Claytonb. " | Read more » about 6 years ago
Claytonb "@everydayduffy -For the above comparison I used the calibration option in Pix4D pro. It consisted of drawing a region of interest on the image of t..." | Read more » about 6 years ago
everydayduffy "Thanks @Claytonb for this really interesting post. Could you detail a bit more about how you calibrated your images with reflectance targets please? " | Read more » about 6 years ago
warren "I really liked this note too! I'm interested in how this dataset could be used as a "test set" for software development as well. There are a range ..." | Read more » about 6 years ago
Claytonb "Hi Alex, I would recommend contacting Charlie Langlois at Labsphere- clanglois@labsphere.com They can make affordable($300 range)targets that are s..." | Read more » about 6 years ago
admaltais "Hi Claytonb, Really interesting analysis. I currently use a Canon S110 modified by Sensfly for NDVI and I wondered if there could be a big differen..." | Read more » about 6 years ago
WhiteRabbit "Per request, I just now changed the title to something more descriptive. Thanks for your post, Chris. " | Read more » about 8 years ago
warren "Its a great question and I'd like to star this post but do you think you could change the title to something more descriptive? Thanks! " | Read more » about 8 years ago
warren "Chris's explanation is right on -- the PL kit is great at comparative spectral analysis, but unless you have a light source with an already known s..." | Read more » about 8 years ago
cfastie "The spectral plot of grass that you are interested in replicating is a plot of reflectance. This curve represents a very well known pattern of refl..." | Read more » about 8 years ago