response:4720
response:4720


Author Comment Last activity Moderation
cfastie "A few different cameras were used to take those photos. Most of the cameras were Canon PowerShots. I think all of the photos were saved by the came..." | Read more » over 5 years ago
sjmanosalvas " Hello @cfastie , It's a good post, you have good photos. I'm new in photo monitoring. I have a question which camera do you use to take this imag..." | Read more » over 5 years ago
Tasos " Hey jtuhtan ! I'm trying to create a colormap like yours in matlab, but cannot figure it out how to change half of the color range (from -1 to 0)..." | Read more » over 5 years ago
DFlores6073 "I use Fiji with the photomonitoring plugin...I would like to create a legend with the values, what would be AWSOME is to have the values on the ima..." | Read more » over 8 years ago
jtuhtan "Hi David, The code I used was MATLAB, overlaying an image of the Fastie colormap onto the NDVI image. What software are you working with? " | Read more » over 8 years ago
DFlores6073 "Jeff (Jtuhtan) could you please direct me to the right place so I can create a legend with values on my NDVI photos... Thank You David " | Read more » over 8 years ago
PatrickC "I still cant get the .lux file to work, and i need to get this working for class. is there a explanation to use the .gpl type files? TY, -Patrick " | Read more » over 9 years ago
PatrickC "you can find my posts here: http://publiclab.org/notes/PatrickC/11-13-2014/binocular-mobius-tripod-for-nvdi any help is appreaciated. " | Read more » over 9 years ago
PatrickC "Thank you for a quick response jtuhtan. I have the NDVI_VGYRM.lut, but have know idea how to use a .gpl file. Ive seen this: https://www.youtube.c..." | Read more » over 9 years ago
jtuhtan "Hi Patrick, To do this in GIMP you will need to work with indexed images and upload a GIMP palette file (.gpl) which follows the Fastie colormap. ..." | Read more » over 9 years ago
jtuhtan "Hi Patrick, To do this in GIMP you will need to work with indexed images and upload a GIMP palette file (.gpl) which follows the Fastie colormap. ..." | Read more » over 9 years ago
PatrickC "Id like to use the alternating white/black/white/cyan/green/yellow/red/magenta gradient, Im using GIMP 2, and Im wondering how to do it? Ive just j..." | Read more » over 9 years ago
aldehyde "Hi jtuhtan. You can get a MATLAB script? Thanks! " | Read more » over 9 years ago
aldehyde "how to calculate the chlorophyll content in terms of NDVI? " | Read more » over 9 years ago
cfastie "I have updated this note to include a link to the new colormap, which is also here: NDVI_VGYRM.lut This should be copied to the C:\Program Files..." | Read more » over 9 years ago
cfastie "GIS programs are really good at doing that kind of spatial analysis. If you give them the appropriate information, they can scale and correct the a..." | Read more » over 9 years ago
RonGeorge "Very interesting post. How can one take this a step further and analyze the % green areas that correspond to greenery? For example, the output woul..." | Read more » over 9 years ago
cfastie "I think any camera could allow you to estimate how thick ice is, if you can put the ice between the camera and the light source. The thicker the ic..." | Read more » over 9 years ago
kugiel "with this camera can I see how deep is ice? " | Read more » over 9 years ago
jtuhtan "Hi, I've updated the YouTube link, should work now. Contacted Jeff regarding the implementation in the Infragram.org site to see what he thinks... ..." | Read more » over 9 years ago
cfastie "Jeff, It was the other Jeff (Warren) who must have added the new colormap at infragram.org. I assume some differences snuck in during the manual tr..." | Read more » over 9 years ago
jtuhtan "I've checked the javascript from the Infragram.org site and could not see any image preprocessing from what was there, the NDVI index was calculate..." | Read more » over 9 years ago
jtuhtan "The Fastie colormap was already implemented in infragram.org, so I can't take any credit there! What I am wondering is why there seems to be a shi..." | Read more » over 9 years ago
cfastie "Wow, I didn't know there was a Fastie colormap at Infragram.org. I think it will need a new name (How about VGYR for violet green yellow red?). I g..." | Read more » over 9 years ago