| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| shilpashetty | "I like your blog so much it is so Call Girls in Mumbai good it is very informative and good thank you. " | Read more » | over 3 years 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 3 years 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 3 years 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 3 years 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 3 years 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 3 years 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 3 years 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 3 years 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 3 years ago | |||
| liz | "Super excellent documentation! CC @cfastie " | Read more » | over 3 years 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 3 years 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 3 years ago | |||
| warren | "Hi, very late reply but I'm starting to tie everything in this topic area together -- there's now documentation up at both https://publiclab.org/wi..." | Read more » | over 6 years ago | |||
| LaPa | "I'm happy for this my first step in NIR and NDVI photograph! Maybe you know but ..... 1) I use not a real camera but a computer board (Raspberry Pi..." | Read more » | about 8 years ago | |||
| cfastie | "That looks pretty good. With the defaults in the photo monitoring plugin, the plant leaves have an NDVI value around 0.3. We don't know what the ND..." | Read more » | about 8 years ago | |||
| LaPa | "HI, What do you think about my last test? NoIR modulo cam+blue filter, WBgain red = 0.88 and WBgain blue = 0.57 " | Read more » | about 8 years ago | |||
| LaPa | "I'll try to get blue > 30 and red < 200 changing the gain. At the moment I do not know how change the exposure. May be I have to read better ..." | Read more » | about 8 years ago | |||
| cfastie | "Here is the range of NIR:VIS ratios for NDVI values between 0.2 and 0.8. " | Read more » | about 8 years ago | |||
| cfastie | "That looks promising. I guess that PiCamera module is a useful tool. I think that photo is a little too yellow. The blue values for foliage are ver..." | Read more » | about 8 years ago | |||
| LaPa | "Hi, I'm here again! I shoot a set of pictures by NoIR modulo cam and blue filter. I tryed finally different white balance. The photo that I post i..." | Read more » | about 8 years ago | |||
| cfastie | "The Bayer filters determine how wavelengths are separated into the three color channels. This is how the camera can sense the balance between the t..." | Read more » | over 8 years ago | |||
| poo | "this green photo don't Relevance to Bayer pattern Mr. @cfastie ? " | Read more » | over 8 years ago |