| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "This is great. I followed the first tutorial and made a nice 3D point cloud from 76 kite photos of a tundra study plot. At Flightriot.com, Geobduff..." | Read more » | over 11 years ago | |||
| cfastie | "djibi2, That would be a great test. Even better would be three cameras (RGB, NIR, infrablue). Most infrablue cameras do not capture as pure an infr..." | Read more » | over 11 years ago | |||
| cfastie | "This sounds like an excellent first outing. There are some tips for using the A495 for aerial shots here (http://publiclab.org/wiki/canon-a495-tips..." | Read more » | over 11 years ago | |||
| cfastie | "I played with this image quite a bit, and could get very little plant health information from it. You recognized one of the problems -- there is no..." | Read more » | over 11 years ago | |||
| cfastie | "In case others are interested in the answer to this question: The histograms of the infrablue photos are screen captures from Photoshop pasted ont..." | Read more » | over 11 years ago | |||
| cfastie | "I think your analysis is good. NIR is passing through all three Bayer filters (even the green channel has light foliage). So there is not a very go..." | Read more » | over 11 years ago | |||
| cfastie | "Hi jalarid, Yes that is correct. There is lots of active development about which cameras and filters work best, and how to get the most meaningful ..." | Read more » | over 11 years ago | |||
| cfastie | "So there seem to be a few possible reasons that the intertidal infrablue photos are dull compared to other infrablue photos. One is that it was a c..." | Read more » | over 11 years ago | |||
| cfastie | "Will, the intertidal zone is a great subject for infrablue. Aerial shots at low tide are going to make striking maps of Fucus distribution. Is thi..." | Read more » | over 11 years ago | |||
| cfastie | ""Tweaking things until the histogram looks right," and especially "tweaking things until the NDVI looks right," are exactly the approaches that mus..." | Read more » | over 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 » | over 11 years ago | |||
| cfastie | "Hi jaluna, NDVI tells us something about plant health because it quantifies the difference between light that is absorbed by plant pigments and use..." | Read more » | over 11 years ago | |||
| cfastie | "InfraQuack -- modified to see farther into the wallet of the misinformed. " | Read more » | over 11 years ago | |||
| cfastie | "Ooh, so close! " | Read more » | over 11 years ago | |||
| cfastie | "I think NDVI videos have the potential to be effective instructional vehicles and possibly important scientific records. The Kickstarter Infragram ..." | Read more » | over 11 years ago | |||
| cfastie | "Can I do a better post-white-balancing to recover useful data? If you adjust the white balance on the infrablue photo, or make any other changes t..." | Read more » | over 11 years ago | |||
| cfastie | "The Rosco 2008 should be one of the best filters for making NDVI because it blocks all the red light better than others. It has only 40% of the ove..." | Read more » | over 11 years ago | |||
| cfastie | "Jeff, do you have an image of the lut you used? You can open a lut in Fiji by file/open. " | Read more » | over 11 years ago | |||
| cfastie | "I got a message a few weeks ago that I had more than 200 photos at Flickr and could access only the most recent 200 with a free account. I think th..." | Read more » | over 11 years ago | |||
| cfastie | "Those are nice sharp airplane window shots. I made NBG false color infrared from them and added them to the Infrafilters posts: http://publiclab.or..." | Read more » | over 11 years ago | |||
| cfastie | "Ned, your explanation suggests that exposure is critical. The shadow in the close-up is essentially the same as the ones in the gigapan - a shadow ..." | Read more » | over 11 years ago | |||
| cfastie | "Partial iFarm head count, 12 names below: Ned Horning, Chris Fastie, VT, camping Don Blair, Amherst, camping Craig Versek, Providence, camping Jef..." | Read more » | over 11 years ago | |||
| cfastie | "This set has the Rosco and the halogen. https://spectralworkbench.org/sets/show/366 " | Read more » | over 11 years ago | |||
| cfastie | "Jeff, Your first question: I subtracted the Rosco spectrum from the halogen light spectrum, but the result made no sense at all. So I just used the..." | Read more » | over 11 years ago |