| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| khufkens | "Wow, that's an impressive project. I don't have the electronic engineering skills to finish such a polished product I fear. I use a more 'off the s..." | Read more » | about 9 years ago | |||
| gpenzo | "Nice. I'm trying to do the same thing with a beaglebone black. http://publiclab.org/notes/gpenzo/03-25-2015/ndvi-cape-for-the-beagle-bone Only I us..." | Read more » | about 9 years ago | |||
| khufkens | "Hi gbathree, we did a study on the "behaviour" of the greenness (Gcc) values across a day and across the year. In general the best values (greenes..." | Read more » | about 9 years ago | |||
| gbathree | "This is a really elegant project! How do you address the differences in light temperature (RGB) and intensity throughout the day? I wasn't sure i..." | Read more » | about 9 years ago | |||
| khufkens | "The connection doesn't matter, however a wireless connection will need some more attention during setup (you have to input the password to your rou..." | Read more » | about 9 years ago | |||
| khufkens | "Hi Chris, I think I didn't answer your questions fully. With some tweaking of the script, yes you can grab the upload_image.sh and get_weather.sh ..." | Read more » | about 9 years ago | |||
| cfastie | "Ah, uploading each image sounds like the way to go. Will the default connection be wired or wireless? Thanks for the stl, it looks good. " | Read more » | about 9 years ago | |||
| khufkens | "I'm still working on the software part to add functionality, as suggested in the note. As it is currently set up, the script now uploads images to..." | Read more » | about 9 years ago | |||
| cfastie | "So it could be useful to point the camera at a scene with solid white pine trees on the left and mixed deciduous on the right and lawn at the botto..." | Read more » | about 9 years ago | |||
| khufkens | "Hi Chris, With respect to vegetation types, everything goes. As long as there is vegetation in the field of view this should work. If you check th..." | Read more » | about 9 years ago | |||
| cfastie | "I really like the idea of making useful data by pointing a camera out my window. I have a Raspberry Pi lying around (no camera yet) and lots of win..." | Read more » | about 9 years ago | |||
| ecta64 | "That is fantastic!! I have been trying to find a reputable structure from motion capable freeware program like the ones in these links for the past..." | | about 9 years ago | |||
| nedhorning | "You could try using VisualSFM(http://ccwu.me/vsfm/). I played around with that a couple years ago and remember seeing video of someone who created ..." | | about 9 years ago | |||
| ecta64 | "Interesting but yes the pixel value is still a problem. Hopefully someone will come up with a freeware tool for video mosaic mapping. It would real..." | | about 9 years ago | |||
| nedhorning | "For what it's worth the software to make mosaics out of oblique images will correct the image geometry but it is unlikely going to correct the pixe..." | | about 9 years ago | |||
| ecta64 | "Yes I'm imaging from a pole and that's the primary reason for the oblique angle. I have tried Nadir imagery but since my pole is only 4 meters its ..." | | about 9 years ago | |||
| nedhorning | "I wouldn't say the time of day doesn't matter but it is more important to be consistent. You are imaging at an oblique angle (from a pole?) so you ..." | | about 9 years ago | |||
| ecta64 | "So it really doesn't matter the specific time of day or sun angle as long as I stay consistent? Honestly I'm just photographing to learn proper wor..." | | about 9 years ago | |||
| nedhorning | "Hi - Different sensor, target, illumination geometries will tend to give different NDVI values of the same vegetation. The difference in impact bet..." | | about 9 years ago | |||
| zeigerpuppy | "What about if you added a Schott BG3 filter behind or in front of the lens, then you would have an infrablue response curve (mostly IR in the red c..." | Read more » | about 9 years ago | |||
| theowallis | "Thanks for your comment, this is what I was afraid of; there is no relatively simple way to isolate specific wavelengths and furthermore if this wa..." | Read more » | almost 10 years ago | |||
| cfastie | "That's a tough one. With the IR blocking filter removed, all three color channels (all pixels, regardless of which color array filter they are unde..." | Read more » | almost 10 years ago | |||
| mathew | "kykytos-- I put Chris out of the filter business . If you are interested in helping us do research on filters, please e-mail me. mathew at publiclab " | Read more » | almost 11 years ago | |||
| cfastie | "kykytos, Sorry, I am out of the business of mailing #2007 filter. We are currently testing several different filters with different cameras to choo..." | Read more » | almost 11 years ago |