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Comments

Author Comment Last activity Moderation
nedhorning "Hi - For Fiji installation instruction you should look at the Fiji website: http://fiji.sc/Fiji Keep in mind that you will need to install an older..." | Read more » almost 6 years ago
nedhorning "Several years ago I was thinking of how to build a DIY integrating sphere/monochromator setup but never pursued it. You would want something other ..." | Read more » almost 6 years ago
nedhorning "The current version of the plugin only outputs index (NDVI and DVI) images. The plugin only calibrates two bands, a visible and a NIR band and two ..." | Read more » almost 6 years ago
nedhorning "Hi Jacob, To check for aperture you could try another EXIF reader. Maybe "max aperture" is the same as "aperture" but I have no idea. When working ..." | Read more » almost 6 years ago
nedhorning "I haven't seen reflectance curves for the "standard" white balance cards that include the NIR region of the spectrum. My guess is they would differ..." | Read more » almost 6 years ago
nedhorning "Chris - The relationships are curvilinear but my preference is to try and figure out how to "correct" the JPEG pixel values to create a linear rel..." | Read more » almost 6 years ago
nedhorning "Hi Cindy - I'll start with the easy question first. The user guide can be downloaded from the plugin's GitHub repository: https://github.com/nedhor..." | Read more » almost 6 years ago
nedhorning "Unfortunately those values would only work if you had the same materials that I used. To get the reflectance values you would either need to fine s..." | Read more » about 6 years ago
nedhorning "Hi aldehyde - Did you look at the user guide on Github: https://github.com/nedhorning/PhotoMonitoringPlugin that should have information about crea..." | Read more » about 6 years ago
nedhorning "Mathew - Have you been able to find a reflectance plot for those paints? I looked but didn't see it. Other paints I was looking at a couple years a..." | Read more » about 6 years ago
nedhorning "There have been a few requests over the years to add the capability of outputting different numbers of bands along the lines of what Chris mentione..." | Read more » about 6 years ago
nedhorning "Hi raynerfdiez, Predicting the sun's elevation for a particular time and day is possible but you would probably want to find a software library th..." | Read more » about 6 years ago
nedhorning "I made some progress with the plugin. I think I fixed the error related to creating the image pair list and RGB image error. I'm still working on c..." | Read more » about 6 years ago
nedhorning "Hi Rich - I'll look into this. I think I know what the problem is but the fix isn't easy. Dealing with the EXIF data has been a bit of a nightmare...." | Read more » about 6 years ago
nedhorning "HI Agustin - I put the images on my server here: https://resources.cbc.amnh.org/cbccloudstorage/public.php?service=files&t=12385a3a09a4879fcffc..." | Read more » about 6 years ago
nedhorning "This error will occur if you run the Create NDVI from Image plugin without having an image displayed in ImageJ. I added an error message to the nex..." | Read more » about 6 years ago
nedhorning "The panel order is not important as long as it's predictable and known. The "ideal" targets would probably be a few gray patches from bright to dar..." | Read more » about 6 years ago
nedhorning "At this point I haven't put much thought into ideal targets mostly because I don't have access to a spectrometer to measure and test different targ..." | Read more » about 6 years ago
nedhorning "When I first started thinking about this a couple years ago I figured auto-detecting the calibration targets would be key but that turned out to be..." | Read more » about 6 years ago
nedhorning "Yep - that's it " | Read more » about 6 years ago
nedhorning "Chris - I'll email you the master list with all of the reflectance values for each target since they aren't really useful without the images. You n..." | Read more » about 6 years ago
nedhorning "The image for this note with the blue color was probably a JPEG image white balanced using red paper. The raw image will have much higher values in..." | Read more » over 6 years ago
nedhorning "Hi Agustin - I have a feeling the problem with with the calibration targets you are using. The targets I sued for this note were scanned by a labor..." | Read more » over 6 years ago
nedhorning "I posted it on GitHub GIST: https://gist.github.com/nedhorning/f384d9afcc043741def3 " | Read more » over 6 years ago