Infragram Pi
question:infragram-pi

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warren "Also noting this page with good notes on blue filters: https://publiclab.org/questions/patalbright/10-20-2020/how-to-find-the-sweet-spot-for-manual..." | Read more » 2 months ago
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patalbright "Thanks, I will try to add an IR spotlight (used also in security camera settings) to add more IR light to this NDVI setup. Has anyone experience wi..." | Read more » over 1 year ago
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amirberAgain "Yes, you are correct that incandescent lamps are far less efficient than LEDs. You should be able to find LEDs centered around 740mn, try looking a..." | Read more » over 1 year ago
cfastie "As amirberAgain says, illuminating the plants with a balance of NIR and visible light similar to sunlight will make interpretation of the NDVI resu..." | Read more » over 1 year ago
patalbright "Thanks @amirberAgain My full spectrum LED lamp produces some light in the IR spectrum as well. However, I do not want to have a too high intensity..." | Read more » over 1 year ago
amirberAgain "My experience with broad illumination for spectral imaging is to prefer an incandescent type lamp, sometimes with a blue LED in addition to that. H..." | Read more » over 1 year ago
patalbright "Hi @amirberAgain, thanks for sharing this. You are absolutely correct - I use an LED with a sunlike spectrum but it is a bit weak on the NIR side o..." | Read more » over 1 year ago
amirberAgain "Hi @patalbright, A couple of things 1. Use whit Styrofoam as a reference white, try to find one that's Matt and not glossy. 2. The light source you..." | Read more » over 1 year ago
patalbright "Thanks a lot liz, it is a super interesting project for me and makes a lot of fun! Happy to get additional insights from your end if there is anyth..." | Read more » over 1 year ago
liz "Super excellent documentation! CC @cfastie " | Read more » over 1 year ago
patalbright "Hi Petter Thaks a lot for your comment, glad to have followed a similar approach as you did! Of course I also checked our post on this topic Link a..." | Read more » over 1 year ago
petter_mansson1 "Hello Patrick, Seems like we have had a similar approach using the PiNoIR camera. I went with the same approach as you. Trying to adjust the awb ..." | Read more » over 1 year ago
ltata5613 "Hello, same with me. I hope someone else can answer this. endralia " | Read more » about 2 years ago
warren "and! https://publiclab.org/infragram-pi " | Read more » over 2 years ago
warren "Here are some links! https://store.publiclab.org/collections/diy-infrared-photography/ and https://publiclab.org/infragram-pi " | Read more » over 2 years ago
warren "Just noting that our Infragram Pi Cam kits now ship with onboard software and WiFi: https://store.publiclab.org/collections/diy-infrared-photograp..." | Read more » over 2 years ago
petter_mansson1 "I just took some colored pieces of paper I found at the office. The paper squares was only added to show other people that I didnt just re color th..." | Read more » over 2 years ago
nstarli "Where did you get the calibration objects shown in the picture? Do you know the exact spectral properties of the colored squares and that is how yo..." | Read more » over 2 years ago
MaggPi "Hi, -One option would be to use near infrared LED strip lights similar to what was done here: https://www.youtube.com/watch?v=Y6Vz6sSnXhY&feat..." | Read more » over 2 years ago
cfastie "If you are taking a still photo every hour or so, you might be able to take a flash photo. A split second flash of visible light might not interfer..." | Read more » over 2 years ago
warren " Hi! Noting this project which may be of interest: https://gitlab.com/bath_open_instrumentation_group/picamera_cra_compensation And pinging @magg..." | Read more » almost 3 years ago