| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| ttaylor | "The alignment of the blue and red spectral response below 850nm that you are seeing is consistent with the spectral response curves that have been ..." | Read more » | about 9 years ago | |||
| gpenzo | "In my case I also want to capture visible images, will help the farmer to identify the problem. Can use my drone for mapping and 3d vegation maps w..." | Read more » | over 9 years ago | |||
| cfastie | "It's good to know about the NDRE. Instead of computing the difference between reflected NIR and reflected red light, I think NDRE replaces reflecte..." | Read more » | over 9 years ago | |||
| funkycbj | "Just so you know, 720nm is in the "red edge" region so you're not computing NDVI. You are computing the Normalized Difference Red Edge Index (NDRE). " | Read more » | over 9 years ago | |||
| cfastie | "Thanks Grayson, I was referring to stretching the histograms in the Fiji plugin. I forget what the default is, but it can make a big difference. ..." | Read more » | over 9 years ago | |||
| gpenzo | "Hello Chris. Seems I need to be more precise on my notes, answer to your question. NIR camera has the block filter removed. 720 and 850 nm filter ..." | Read more » | over 9 years ago | |||
| Tbtouaki | "Thanks that is exactly what I wanted to know. I am going to modify one camera, and wanted to test different filters, but was unsure if I could do ..." | Read more » | over 9 years ago | |||
| gpenzo | "Hallo Rita. In my setup One camera is not modified. The other camera I removed the IR block filter inside. I use the 720nm or the 850nm filter on t..." | Read more » | over 9 years ago | |||
| Tbtouaki | "Hi The first pictures I have are with only one camera and an unmodified one. Now I bought the second camera, same model as the first and was cons..." | Read more » | over 9 years ago | |||
| cfastie | "Rita, If you are using two cameras, one unmodified and one to capture an NIR image, the best filter to use in the NIR camera is one that blocks all..." | Read more » | over 9 years ago | |||
| Tbtouaki | "I have pictures of three different kinds: true color, 560nm IR filter, and 720nm IR filter, and I've been having the difficulty of choosing which c..." | Read more » | over 9 years ago | |||
| cfastie | "Grayson, The NDVI images look excellent. Just to clarify a few things, I think the following are true: The NIR camera has had its IR block filter..." | Read more » | over 9 years ago | |||
| Polygonaltree | "Hi, Update (13/02/2014). In the new version of this camera released by Logitech the IR filter is integrated in the sensor itself. It is impossible ..." | Read more » | over 9 years ago | |||
| Roolark | "Ok that's good to know. At the moment, I have a canon ps g12 with the schott bg3 infrablue filter that is saving photos as raw, and my canon dslr r..." | Read more » | over 9 years ago | |||
| cfastie | "These are Brenden's photos, so I'm not sure, but I think he was experimenting with different camera settings, which are mostly irrelevant if you wo..." | Read more » | over 9 years ago | |||
| robharg | "Hi, thanks for the tips on IR filter removal on the C270. I thought I'd share my experience... Firstly, I didn't want to heat mine too much as I fe..." | Read more » | over 9 years ago | |||
| Roolark | "I'm very interested in the work you've done with these and other cameras. With this set of photos, were they taken in JPEG or RAW? I know many poin..." | Read more » | over 9 years ago | |||
| fnok | "Sounds like a great application for NIR imagery. I think you may even benefit by putting your camera back up in the air --> balloon mapping or a..." | Read more » | over 9 years ago | |||
| warren | "There's been some discussion of blurry images and how to fix this to some degree in the mailing lists: https://groups.google.com/forum/#!searchin/p..." | Read more » | over 9 years ago | |||
| drkatnz | "Sure, have provided a zip file link with all the source, and posted some pictures into the article itself. Not sure why the focus sucked on the di..." | Read more » | over 9 years ago | |||
| warren | "Wow, fantastic. Could you share some of the source images, maybe in a zip file, or samples from your sets of the paddock photos? " | Read more » | over 9 years ago | |||
| cfastie | "Roolark, There must be a loose or broken connection. You probably should open it up again and check for that and wiggle everything and see if it wo..." | Read more » | over 9 years ago | |||
| nedhorning | "Hi Roolark - Make sure you didn't disconnect or tear one of those thin ribbon cables. That's the only thing I can thing of that would cause that pr..." | Read more » | over 9 years ago | |||
| Roolark | "I just completed this conversion, and the image on the cameras LCD screen looks good, but the camera will not take pictures. Occasionally it displa..." | Read more » | over 9 years ago |