jenjimah 7 research notes and 7 wiki edits | Joined about 2 years ago

Horticultural Spectrometer - Assembly III

by jenjimah about 17 hours ago | 2 | 42 views | 1

A Method for HDR Imaging

by jenjimah 14 days ago | 14 | 121 views | 2

DVD Grating vs. Holographic Film

by jenjimah 14 days ago | 0 | 92 views | 1

Standalone Spectrometry software & uploading JPG or PNG spectra

lach_myers asked about 11 months ago


commented on Aug 06, 2018 1

commented on Jun 07, 2019 0

commented on Jun 19, 2019 0

commented on Jun 19, 2019 0

Show all 4 comments »

View these maps at »

Title Creation date Image


Comment Last activity Moderation
" Done! " | Read more » 13 days ago
"In the code of the pi camera library, which is what many of the other libraries are built on, there is a special data export option called .array w..." | Read more » 13 days ago
" Ah yes! For a moment there I was confused between what the paper was saying about non linearness applied to pixels prior to data export and AGC. I..." | Read more » 13 days ago
" @stoft I tried reading about the raw RGB ouput on the picamera documentation but I did not find the description to have too much information, but ..." | Read more » 13 days ago
" Thanks! I just had a look at their manuscript. There are a lot of details there that I had no idea about and need to learn. " | Read more » 13 days ago
"Great question, it's pretty amazing you were able to shut off the AGC circuit. I had previously imagined that most ofthe pre-data export operations..." | Read more » 14 days ago
" Wow, this manual is really thorough and well explained! I have a minor technical comment: P5 - Tulip picture is referred to as Figure x, Figure ..." | Read more » 14 days ago
" Hi Dave, I know you made this post quite a while ago. Have you done any other exploration in HDR? I am trying to include it in an app that would a..." | Read more » 18 days ago
" After getting more familiar with the and spectral-workbench.js, this is exactly what I need (offline app grounded in the sp..." | Read more » 19 days ago
" I just looked up the transmission spectrum of borosilicate glass and you're right I think it's fine. I might just try the microscope slide idea. I..." | Read more » 24 days ago
" ^^^ I just realized you were referring to line spacing in microns, not lines/cm! Now it makes sense. " | Read more » 26 days ago
"Also - I like the idea of microscope slides, except that glass strongly absorbs UV <400nm. I'm not sure of how well the pi NoIR is on that range..." | Read more » 26 days ago
"Yes, so far I'm trying to accomplish all those 3 points. As for the slit, I made it from a razor blade so it should fulfill the criteria. I compare..." | Read more » 26 days ago
" Thanks for the feedback, and for the equation. That's super helpful. I asked the PublicLab when I ordered my kit regarding the diffraction lines/i..." | Read more » 27 days ago
" Hi Warren, Sure I'd be happy to try to add that in, it's only 2 files that need to be updated after all. However before that, there are a few thin..." | Read more » 27 days ago
"I did this! Hardware: Raspberry Pi Zero W Software: Raspbian Stretch Lite, Windows 10 (on PC) Connection: USB configured as ethernet device; SSH i..." | Read more » 28 days ago
" Thanks for the link! I also wasn't able to use the wifi method of connecting so I also connected over usb. I had to follow the whole tutorial from..." | Read more » about 1 month ago
"154520 153053 - sunlight Since this example is sunlight, this may mean some distortions are attributable to factors other than the rolling shutt..." | Read more » 2 months ago
" Possible examples of banding: 128155 - fluorescent bulb 122557 - CFL 97106 - Calibration 91584 - looks like a white LED " | Read more » 2 months ago
"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 » 2 months ago
"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 » 2 months ago
" 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 » 2 months ago
"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 » 3 months ago
"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 » 3 months ago

jenjimah was awarded the Basic Barnstar by warren for their work published in A Method for HDR Imaging.

jenjimah was awarded the Basic Barnstar by warren for their work published in Horticultural Spectrometer - Assembly III.


Tags organize our knowledge base. Click to learn more or subscribe to a topic.

RSS feed for jenjimah

Wiki pages recently contributed to