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pi-calibration
pi-calibration


Author Comment Last activity Moderation
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dss96 "This is really cool!cool! " | Read more » almost 3 years ago
heartmeetsoul "Thats Really cool . Thanks for sharing " | Read more » almost 3 years ago
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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 » about 3 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 » about 3 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 » over 3 years ago
petter_mansson1 " Hello, my input might guide you in the right direction. Different environments require different settings so it might be hard to generalize. I did..." | Read more » over 3 years ago
petter_mansson1 "For calibrating the Raspberry PInoIR camera I wrote a gui application to just play around with till I found a good result. I looked for values that..." | Read more » over 3 years ago
MaggPi " These are really good questions. 1) Calibration - Calibration typically involves placing known reference samples in the scene, check out https://..." | Read more » over 3 years ago
rayavidas " The mass spectrometry is what we use to measure the quantity of light sun all the plants and artificial grass received. The result of combine of i..." | Read more » over 3 years ago
warren "Oops responded to the wrong comment, moving here: Hi all! Great input here. Just noting that we've had a major revision to the PL spectrometer des..." | Read more » over 3 years ago
stoft "Observation of some basic system parameters will help define the limits. 1) A single stable source (Solux and CFL) plus the PLab-class spectromete..." | Read more » over 3 years ago
stoft "With non steady-state sources, measurement error results from asynchronous data sampling. The 'fix' is either long integration time (assuming the s..." | Read more » over 3 years ago
jenjimah "Sure I'll post a question about it! After stewing on it a while, I don't think it should be a huge issue in most relevant contexts, (esp. for other..." | Read more » over 3 years ago
jenjimah "Thanks! It looks like khufkens predicted the response from >700 as the data was not yet available. If you look at the spectrum published by Sony..." | Read more » over 3 years ago
jenjimah " Great fodder for thinking about. 1) Agreed, having an individual light measurement per plant has advantages in certain scenarios. I guess it comes..." | Read more » over 3 years ago
MaggPi " This may be OBE but Hufkens has posted files of the PI response curves: https://khufkens.github.io/pi-camera-response-curves/ which were also r..." | Read more » over 3 years ago
stoft "Ok, the project concepts are taking shape which always prompts more thoughts. 1) By 2D mapping the light spectrum and relative intensity, you will..." | Read more » over 3 years ago
warren "Hi! I think the question of rolling shutter might deserve it's own question posted, to really dig into - it's a great question! One thought I had w..." | Read more » over 3 years ago
jenjimah "I was just reading on the pi website about the rolling shutter and I was wrong about the global shutter (it said only cameras with physical shutter..." | Read more » over 3 years ago
jenjimah "So I was reading about minimum exposure time of the Pi cameras and learned that it uses something called a "rolling shutter", which means it reads ..." | Read more » over 3 years ago