| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| liz | "indoor or outdoor space? " | Read more » | about 6 years ago | |||
| Sidney_AstroPlant | "Using NIR LEDs seems like a good option to look into and I'm happy to hear that I might not have to deal with extensive filtering! I just got a res..." | Read more » | almost 7 years ago | |||
| cfastie | "A simple option might be to turn on some NIR LEDs when the photography happens. The NIR:VIS ratio might not match sunlight, but if you know what it..." | Read more » | almost 7 years ago | |||
| Sidney_AstroPlant | "The kit is fully enclosed with LED with a certain blue and red ratio (I have to verify what the exact ratio is). This brings me to the conclusion t..." | Read more » | almost 7 years ago | |||
| cfastie | "Thanks for adding a photo. NDVI is based on the assumption that the light illuminating the foliage has a certain proportion of NIR and VIS -- the p..." | Read more » | almost 7 years ago | |||
| cfastie | "Using two cameras solves one of the two problems I described (mixed NIR and VIS). That problem can also be solved by measuring or making assumption..." | Read more » | almost 7 years ago | |||
| Sidney_AstroPlant | "Thanks Chris for your response. My assumption was that the blue filter supplied with the RPI Noir camera blocks the red channel fully. So you get a..." | Read more » | almost 7 years ago | |||
| Sidney_AstroPlant | "Thanks for the positive messages! I see that both of you are active in open source hardware and software initiatives. We are thinking to share our ..." | Read more » | almost 7 years ago | |||
| zengirl2 | "Glad you posted here as you know I'm a fan of the project. :) " | Read more » | almost 7 years ago | |||
| cfastie | "I haven't used the Pi NoIR cam and have not seen your photos, so I can only respond from general principles. Camera sensors are not as sensitive ..." | Read more » | almost 7 years ago | |||
| warren | "Just wanted to say this looks really cool! " | Read more » | almost 7 years ago | |||
| btbonval | "Pinoccio is an open source / open hardware solution that makes data collection a breeze. It runs on Arduino and makes everyone's life considerably ..." | Read more » | over 9 years ago | |||
| ajawitz | "Has there been any movement on the rumored Infragram App for Raspberry Pi? See my recent update about the TSL2561 Digital Luminosity Sensor for so..." | Read more » | about 10 years ago | |||
| cfastie | "This is a pretty interesting investigation. You are breaking new ground in a few areas, so there will be much experimentation to do. For example, I..." | Read more » | over 10 years ago | |||
| ajawitz | "Thank you for this helpful advice! This is exactly what I was hoping to hear! I've edited the research note to include my most recent test result..." | Read more » | over 10 years ago | |||
| cfastie | "I think you are correct that if the only source of light is blue and red LEDs that emit little NIR, the NIR channel in an Infragram camera is goin..." | Read more » | over 10 years ago |