| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "I think the algorithm to convert a blue- or red-filtered NIR photo to color NDVI is something like this: Start with a color photo in which one ch..." | Read more » | almost 8 years ago | |||
| sujayj | "Thanks Chris " | Read more » | almost 8 years ago | |||
| cfastie | "You can use any filter that blocks most blue and green light (all visible light other than red) and also passes a lot of near infrared light (somew..." | Read more » | almost 8 years ago | |||
| warren | "Hi, would you mind looking through the FAQ to see if we can get some good documentation together about this additional question? If it doesn't exis..." | Read more » | almost 8 years ago | |||
| KIAS | "Warren, I have downloaded csv file but then how will I be able to convert the RGB and wavelength values to calculate absorbance or transmittance? C..." | Read more » | almost 8 years ago | |||
| stef | "Hi Would be usefull if we had a pix to view. " | Read more » | almost 8 years ago | |||
| warren | "Hi, just wondering about my question on the screw in the photo below -- is that to unscrew the lens assembly itself? " | Read more » | almost 8 years ago | |||
| Sigmund92 | "Thank you ! " | Read more » | almost 8 years ago | |||
| cfastie | "In single-camera NIR systems with a filter that blocks all red or blue, the camera can be adjusted to emphasize the color channel capturing NIR. Th..." | Read more » | almost 8 years ago | |||
| warren | "This could be a few things, but the simplest is that you built a spectrometer with the camera rotated 180 degrees from the way it should be in the ..." | Read more » | almost 8 years ago | |||
| stef | "@warren, Here is the link to my latest cam https://spectralworkbench.org/spectrums/99143# also in Sun sky tags the slit is ca 0.04 mm cam is the MS..." | Read more » | almost 8 years ago | |||
| stef | "Any camera that has the IR cut filter removed. More specifically the one shipped with the PLAB spectrometer 3.0 stef " | Read more » | almost 8 years ago | |||
| stef | "It may be the orientation of the camera. If you are using the JDEPC-0V05 as currently shipped with PLAB Spectrometer 3.0 the usb connector should b..." | Read more » | almost 8 years ago | |||
| warren | "Can you link to your data directly? I think it's possible higher resolution could help, but there may also be other resolution issues such as the ..." | Read more » | almost 8 years ago | |||
| suman | "There's no information about making GoPro first version to full spectrum in the internet...i have done a lot of research in the web and found nothi..." | Read more » | almost 8 years ago | |||
| warren | "Can you show a picture of the front and back as well? I think i see a screw, but not sure... " | Read more » | almost 8 years ago | |||
| warren | "Hmm, very hard to follow without images, huh? I wonder if there are any YouTube tutorials? " | Read more » | almost 8 years ago | |||
| liz | "Great picture, made me chuckle :) " | Read more » | almost 8 years ago | |||
| suman | "Found this on the DIYdrones forum :http://diydrones.com/forum/topics/go-pro-camera-near-ir?id=705844%3ATopic%3A767644&page=2#comments But stil..." | Read more » | almost 8 years ago | |||
| suman | "Dear Warren, This is the first version of GoPro Hero HD without screen not Hero 2 (although it looks quite similar). Yeah the lens is fixed (no ..." | Read more » | almost 8 years ago | |||
| warren | "Via @wildintellect on the plots-infrared discussion list: Replace the lens, there are several aftermarket GoPro lens made for IR. http://stuntcams..." | Read more » | almost 8 years ago | |||
| liz | "Hi Dave, This is a very interesting project. How is the Facebook group working for you so far? Based on the name of your Facebook group, I added t..." | Read more » | almost 8 years ago | |||
| xose | "Facebook account needed to check the project... " | Read more » | almost 8 years ago | |||
| liz | "I agree @Ekta64 this is a difficult call " | Read more » | almost 8 years ago |