calibrate-ndvi
calibrate-ndvi


Author Comment Last activity Moderation
tecmarkcontracting "Good Try, Do you want to buy hoses for agricultural needs check here Feed Hose Supply in India " | Read more » almost 3 years ago
RehmaanMalik "Nice try Natalie Ui Developer @ RailsCarma & Carmatec " | Read more » almost 7 years ago
ashishkochaar "It is really very awesome. I am also trying to take the selfies like this but when I was at Chase Routing Number Texas then I had taken a lot of se..." | Read more » over 7 years ago
nedhorning "For calibration I think the most important factor with white balance is that you keep it the same for an entire mission. An advantage to using the..." | Read more » over 7 years ago
suman "Dear Ned, Oh okay i think i got your idea of calibration. I wanted to know the settings (white balance) which you apply normally whe..." | Read more » over 7 years ago
nedhorning "Hi Suman, I haven't tried applying calibration coefficients in any sort of rigorous way to adjust white balance. All of my calibration work has bee..." | Read more » over 7 years ago
suman "Dear Ned, First of all i would like to appreciate and thank you for posting such an interesting research article. I am typically in d..." | Read more » over 7 years ago
cfastie "The Mobius camera with its IR filter replaced with a red filter produces a photograph that could be called an RNN photograph. The blue channel of t..." | Read more » over 8 years ago
aldehyde "I use Mobіus. I recive Infrared image, NIR image or RGN (RNN) image? " | Read more » over 8 years ago
aldehyde "I use Mobіus. How to write better? Infrared image or RGN (RNN) in the description of the image in article. Thanks " | Read more » over 8 years ago
cfastie "I usually use the blue channel for NIR because it is probably less contaminated with other visible light, but the green channel could work better w..." | Read more » over 8 years ago
aldehyde "If the green channel is probably mostly NIR, I must choise in Photo Monitoring Plugin: - Chanel for Red band to create Index: RED - Chanel for IR..." | Read more » over 8 years ago
cfastie "Yes, a camera with a red filter replacing the IR block filter will make RGN photos. The green channel is probably mostly NIR, so it is really RNN. ..." | Read more » over 8 years ago
aldehyde "If i have Mobius infragram cam with red filter, what kind of image will i receive? RGN image?. And after this (Photo Monitoring Plugin), will i rec..." | Read more » over 8 years ago
berkelha "Perfect, thanks for the quick response. Data looks great. " | Read more » almost 9 years ago
cfastie "berkelha, Assuming your camera has a red filter, instead of RGB it will have RGN. The green channel will be mostly NIR, so it's really RNN, but th..." | Read more » almost 9 years ago
berkelha "Hi. I recently purchased an "infragram plant cam" and am finding myself confused (a common phenomenon). So, I take an image and read it in to Octav..." | Read more » almost 9 years ago
Parth "Hi Chris, I replaced IR filter with rosco fire filter#19 in OV5642 camera module to replicate infragram‘s point & shoot camera.I captured imag..." | Read more » almost 9 years ago
cfastie "Hi Parth, The three methods of computing NDVI all do the same thing. They do the same math (NIR-VIS)/(NIR+VIS) on each pixel. They are equally rel..." | Read more » almost 9 years ago
Parth "Hi Chris, Yes ,they are the castor beans. I converted previously discussed image into NDVI image using infragram 's web server utilities. usin..." | Read more » almost 9 years ago
cfastie "The NDVI image looks good. Are they castor beans? The plants have higher NDVI values than soil or sky, but within the plants, variation in NDVI is ..." | Read more » almost 9 years ago
Parth "Hi Chris, I captured the images using the infra gram's point & shoot camera.I converted these captured images into NDVI image using python scr..." | Read more » almost 9 years ago
cfastie "Parth, The dual band dichroic filters are very expensive and seem to work best if installed inside the camera. They should provide better results ..." | Read more » almost 9 years ago
Parth "Hi Chris, Thank you very much for elaborate me more about filter and also for clear up my confusion. I read your research note regard the Dual ba..." | Read more » almost 9 years ago