| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Rayishido | "I am using 2 raspberry Pis (one camera on each) and I synchronize the shutters using interrupts. I had some strange behavior (one Pi taking more pi..." | Read more » | almost 9 years ago | |||
| cfastie | "The NDVI image in my last comment was made by stretching only the NIR channel. The default is to stretch both NIR and VIS and that usually works we..." | Read more » | almost 9 years ago | |||
| Rayishido | "Hi Chris, to obtain this picture you stretched the histogram of the visible or visible and IR. As far as I understand to make NDVI picture a visib..." | Read more » | almost 9 years ago | |||
| cfastie | "Both NDVI images look good. Both seem to have some biological meaning and both have reasonable NDVI values in areas that are shady which is very go..." | Read more » | almost 9 years ago | |||
| Rayishido | "Hi Chris! You assumed right! :D The pictures was taken with the pi noir and the blue filter and turned off the automatic white balance to set my o..." | Read more » | almost 9 years ago | |||
| cfastie | "Rayishido, I assume the orangish photo was taken with the PiNoir camera with a blue filter. By calibration I think you mean you used the AWB_gains..." | Read more » | almost 9 years ago | |||
| Rayishido | "Hi! Thank you very much for your answers! I have downloaded Fiji and it's plugin and will test as soon as possible. This weekend I am going to mak..." | Read more » | almost 9 years ago | |||
| cfastie | "Hi Rayishido, Nice Pi photos. Claytonb is correct about the shadows. It's a common artifact for dark areas to have very high NDVI values. In your ..." | Read more » | almost 9 years ago | |||
| Claytonb | "@Rayishido -the high NDVI values is a normal occurrence with shadows. You will notice that the NDVI values will change in the shadows depending on ..." | Read more » | almost 9 years ago | |||
| patcoyle | "Thanks Ned. I haven't used the tool lately, so haven't run into the problem. Appreciate all your work on this great capability. " | Read more » | almost 9 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 » | over 9 years ago | |||
| azaelb | "I am doing about the same thing as you: use small quadcopters with small cameras with red/blue filters to analyze NDVI for small farmers. I posted ..." | Read more » | over 9 years ago | |||
| aguchosolano | "Interesting results..I wonder why around one of the cars it is also green " | Read more » | almost 10 years ago | |||
| patcoyle | "Tried it, see Flikr images of results at: https://flic.kr/s/aHsk6uLNsu " | Read more » | almost 10 years ago | |||
| patcoyle | "Haven't tried it, but this site discusses how to Correct Fisheye in GIMP http://classroom.synonym.com/correct-fisheye-gimp-19646.html " | Read more » | almost 10 years ago | |||
| eustatic | "This looks really good, how do i translate the PTLens stuff into GIMP or BIMP, like the folks in Maine are posting about? " | Read more » | almost 10 years ago | |||
| patcoyle | "Thanks Stewart, I appreciated your suggestions on correcting the distortions. " | Read more » | almost 10 years ago | |||
| gonzoearth | "The lens distortion correction and NDVI look great! " | Read more » | almost 10 years ago | |||
| patcoyle | "Thanks Chris. Your comment led me to a solution. Link to the Mac software is at: https://www.mobius-actioncam.com/softwareuser-guide/ I didn't actu..." | Read more » | about 10 years ago | |||
| cfastie | "Pat, It sounds like you are not using a very handy program to select the configuration settings for the Mobius. There is a good one for Windows (mS..." | Read more » | about 10 years ago | |||
| airfix4 | "Thank you. " | Read more » | about 10 years ago | |||
| nedhorning | "At this time it is not possible to use geo-reference data. If there is sufficient interest in that functionality I could try to add it but it's not..." | Read more » | about 10 years ago | |||
| airfix4 | "Hello, I'm new to the organization...and NIR technology in general. I have played some with the Photo-monitoring plug in. Great too by the way! Is ..." | Read more » | about 10 years ago | |||
| aldehyde | "Hello. how to calculate the chlorophyll content in terms of NDVI? " | Read more » | about 10 years ago |