nir
nir


Author Comment Last activity Moderation
warren "Hi, @nedhorning! I wanted to ask if you thought tar paper that people purchase in a store would have a consistent enough reflectance that you think..." | Read more » about 4 years ago
difautsch "I’ll see ya there! " | Read more » over 4 years ago
sjmanosalvas "Please your help, I bought the Blue and Red Filter (https://publiclab.myshopify.com/collections/diy-infrared-photography/products/infragram-diy-fil..." | Read more » almost 5 years ago
cfastie "Incandescent or halogen lamps emit lots of NIR. Fluorescent, sodium, mercury, and LED lamps do not. The image below is from here: http://perfecthea..." | Read more » almost 5 years ago
JLJ "Hello Chris, thank you for the swift and detailed response. Do you have any recommendations for a light source that I can buy? " | Read more » almost 5 years ago
cfastie "It is possible to compute a facsimile of NDVI from a single photo taken with a Pi NoIR camera and blue filter. The blue channel in the photo will c..." | Read more » almost 5 years ago
cfastie "There is no information at the Public Lab store about what filter is used except that it is a red filter. I suspect the filter is a Rosco `#19 filt..." | Read more » almost 5 years ago
RexToother "Sorry, I thought that was going to be posted directly to the product page. Here is the link to it: https://publiclab.myshopify.com/products/infragr..." | Read more » almost 5 years ago
warren "Hi, just curious which lens you're referring to? Thanks! " | Read more » almost 5 years ago
jdburnett "@dannysmith Your use of the ILS seems sound. Your work will certainly be more defensible if you can use Pagnutti' et. al's method, however, it may..." | Read more » about 5 years ago
nedhorning "Setting up and running an integrating sphere is within your reach for a 12 week course as long as the equipment is working and you have access to s..." | Read more » about 5 years ago
dannysmith "@nedhorning I think you're right about the expecting the unexpected with this camera, when I get back to the lab later in the week I'll run a trial..." | Read more » about 5 years ago
jdburnett "Ned's last comment reminded me of something I found with our equipment a few years ago. My lab had 4 NIR converted cameras. Three had R & IR p..." | Read more » about 5 years ago
jdburnett "@dannysmith I will second Ned's thoughts. I assume you are using raw image format out of your camera to increase bit depth and avoid dealing with t..." | Read more » about 5 years ago
nedhorning "Hi dannysmith - I’m glad to hear the note was useful to get you started. I find it helpful to plot both red and blue channel regressions but I expe..." | Read more » about 5 years ago
dannysmith "@nedhorning thank you so kindly for all of your work, the detail you have put into it has been a tremendous help to me! I have been lucky enough to..." | Read more » about 5 years ago
warren "I think they're 4 inches, not 5 -- sorry for the slow response! " | Read more » over 5 years ago
warren "Note: we now have a guide to setting white balance, although this question still stands for what the settings should actually be. https://publicla..." | Read more » over 5 years ago
cfastie "I don't know how much LEDs vary in their NIR emission. But it's easy to add some NIR LEDs to the mix. There is an advantage to using only artificia..." | Read more » over 5 years ago
robotfarms "Thanks for the in depth answer Chris! If i needed to use this system in low light or night, do you think I would need to add NIR light, or is there..." | Read more » over 5 years ago
robotfarms "Thanks William, I was going to have a play with it in regular RGB color too, and find the best solution. I can have a play with all the variables t..." | Read more » over 5 years ago
cfastie "The NIR illumination is probably not needed because daylight is a very consistent source of lots of NIR (although using NIR illumination at night c..." | Read more » over 5 years ago
williampasco "Hola, yo creo que no va ha ser de ayuda, ya que todas las plantas pueden usar esa luz para hacer la fotosíntesis. He tratado de hacer una diferenci..." | Read more » over 5 years ago
robotfarms "Thanks, I just ordered a pack. " | Read more » over 5 years ago