| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "Thanks Richard, Recently disturbed sites like a forest logged 50 years ago or a pasture abandoned 50 years ago will tend to have higher biological..." | Read more » | over 9 years ago | |||
| cfastie | "Alex, The two filters are probably the same. The #19 filter will work best if the you do a custom white balance on the camera before you take photo..." | Read more » | over 9 years ago | |||
| cfastie | "Nice. In general, do built environments have higher or lower spectral diversity than natural environments? Chris " | Read more » | over 9 years ago | |||
| cfastie | "Ah, the Event 38 NGB filter. That filter gives really interesting results. I haven't really figured out how it works so well. It must be the steepn..." | Read more » | over 9 years ago | |||
| cfastie | "Hooray 360°! Those are nice crisp photos. I like the false color IR. What filter and white balance setting did you use? There was no post process..." | Read more » | over 9 years ago | |||
| cfastie | "The standard lens on the Mobius might be too wide to allow good analytical photos. But other lenses are available: http://publiclab.org/notes/patco..." | Read more » | over 9 years ago | |||
| cfastie | "I think the NDVI_VGRYM.lut color scheme is a good one to start with. What ever you use, include a key to the colors with every NDVI image you share..." | Read more » | over 9 years ago | |||
| cfastie | "Monoxide, Try these parameters: The NDVI_VGRYM.lut comes with the plugin. For other Mobius photos, try different stretch values (0 to 10), and t..." | Read more » | over 9 years ago | |||
| cfastie | "vdiallonort, If you are going to use a single camera with the IR block filter removed, there are two options. If you can take two photos without m..." | Read more » | over 9 years ago | |||
| cfastie | "In markdown, leaving a single blank line between two blocks of content produces a single blank line between the two blocks of content. If you want ..." | Read more » | over 9 years ago | |||
| cfastie | "Gretchen, It's not just these particular photos, the Public Lab infrared cameras do not record thermal information. They are all near infrared came..." | Read more » | over 9 years ago | |||
| cfastie | "Hi Gretchen, The Public Lab infrared images you refer to here are not thermal images. The near infrared photos don't have any information about tem..." | Read more » | over 9 years ago | |||
| cfastie | "Ned, So like this. We need to make a different file of reflectances for each filter because the filters we were using were very narrow band filt..." | Read more » | over 9 years ago | |||
| cfastie | "Cool. Ned, do you have a reflectance csv file for all of the calibration targets in the test photos from iFarm (the lead image)? And a key for whic..." | Read more » | over 9 years ago | |||
| cfastie | "Altering the white balance settings could have made made that photo more turquoise. Some experimentation is called for. Changing the exposure (so t..." | Read more » | over 9 years ago | |||
| cfastie | "Hi RQ-05, Using Infragrammar in the Infragram sandbox is a good way to experiment. I usually use Ned Horning's Fiji plugin to produce NDVI images. ..." | Read more » | over 9 years ago | |||
| cfastie | "It will probably be possible to give you some guidance if you attach a couple of the photos straight from the camera. Chris " | Read more » | over 9 years ago | |||
| cfastie | "It will probably be possible to give you some guidance if you attach a couple of the photos straight from the camera. Chris " | Read more » | over 9 years ago | |||
| cfastie | "Pat, I just did a fresh install of Firefox on Windows 7. When I clicked the embedded Photosynth, it wanted me to "activate" Silverlight. I clicked ..." | Read more » | over 9 years ago | |||
| cfastie | "Pat, Photomerge is doing a good job stitching your photos. It is not including many photos with sky, which might be because those photos do not ove..." | Read more » | over 9 years ago | |||
| cfastie | "Yes, those photos are good. Ideal photos have some live plants, maybe some recently dead leaves, and some things that are not foliage. Outdoor phot..." | Read more » | over 9 years ago | |||
| cfastie | "Sorry, I don't remember the details of this process. NDVI should range from -1 to +1. Blue should be the lowest values, and red the highest. So fro..." | Read more » | over 9 years ago | |||
| cfastie | "Try loosening the bolt into the spline. As per https://github.com/p-v-o-s/sky-sweep/issues/5 " | Read more » | over 9 years ago | |||
| cfastie | "I think you're right that subjective is the wrong word. Maybe qualitative. A plant with an actual NDVI value of 0.5 may have an infragram NDVI valu..." | Read more » | over 9 years ago |