| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| aldrin | "Sir @chris,what software did you use to select a part of the image and check its histogram? " | Read more » | over 7 years ago | |||
| warren | "Great question -- I used tags to add the prompt for posting replications; if you're willing, would you mind posting your results using the button a..." | Read more » | about 8 years ago | |||
| cfastie | "You are correct that this is not really an extraction. It's just plant material chopped up finely in a blender with some liquid. I also did this wi..." | Read more » | about 8 years ago | |||
| iamkat | "Hi, I tried to re-create the lycopene extraction with methanol and ethanol (lab grade) but didn't get anywhere. It's my understanding that they are..." | Read more » | about 8 years ago | |||
| velorinaa | "Hello! I could have sworn I’ve been to this site before but after reading through some of the post I realized it’s new to me. Anyways, I’m definite..." | Read more » | over 8 years ago | |||
| velorinaa | "Thanks for sharing your information, its great and i appreciated about it! http://sbobetpoker.com | http://heropoker.net " | Read more » | over 8 years ago | |||
| YeongSeo | "Hi there The last post is over a year old so I don't know if there is anyone around to comment I'm really wondering that how can I overcome the Mi..." | Read more » | over 8 years ago | |||
| Jogomez74 | "Cfastie and Agustin If we try to change de index co-dominium? I mean 0 to 1. And the equation of NDVI index must be.. NDVI 1= (1/2)(NDVI+1) = (1/2)..." | Read more » | about 9 years ago | |||
| cfastie | "Hi CHUMBA, I have never seen the inside of a Samsung camera, so I can't be of any help. There is probably a filter somewhere. Maybe it is glued to..." | Read more » | about 9 years ago | |||
| CHUMBA | "Hi @cfastie, I wonder if you know How take out the IR filter from a Samsung DV150-f, I have one, I broke it, and I did not find the IR filter anywa..." | Read more » | about 9 years ago | |||
| fjcaceres | "Thanks for your answer. BTW THe conversion was very easy, just need to have the tools. Small screwdriver and tweezers to remove the filter in the..." | Read more » | over 9 years ago | |||
| patcoyle | "Javier, Sorry I didn't see this sooner. I've not experienced focus problems with this conversion. Chris is a great resource since he's done so many..." | Read more » | over 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 | |||
| Tbtouaki | "Hi I had wrong white balance for my camera. Thanks everyone for the help. Sorry for the trouble If anyone has any idea on how to save pictures take..." | 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 | |||
| warren | "Specifically, I think we need to encourage people to structure experiments around what these cameras do best at the moment -- comparisons between v..." | 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 | |||
| warren | "Hi, Chris - I've been plugged into several other projects and really didn't have time to do this properly, and there was some confusion over the we..." | Read more » | over 9 years ago | |||
| nedhorning | "Chris - Thanks for pointing that out. I typically clip the values so anything greater than 1 becomes 1 and anything less than -1 become -1. " | Read more » | over 9 years ago | |||
| cfastie | "It looks like the computed index will no longer be between -1 and +1 if you adjust the red value that way. Do you then have to rescale the index so..." | Read more » | over 9 years ago | |||
| nedhorning | "Hi Agustin - Your second equation is one option. Another is: (blue- (red-blue0.8)) /(blue+(red-blue0.8)) You can play around with the factor I add..." | Read more » | over 9 years ago | |||
| agustin_castellano | "Sorry is should be (blue- (red-blue)) /(blue+(red-blue)) ?? To extract the nir data in the red chanel. Regards. " | Read more » | over 9 years ago | |||
| agustin_castellano | "Could something like this (blue- (red-blue)) /(blue-(red-blue)) ?? To extract the nir data in the red chanel. Regards. " | Read more » | over 9 years ago | |||
| nedhorning | "Hi Agustin, The formula you wrote is what I use. I typically use the PhotoMonitoring plugin which can be found here: https://github.com/nedhorning..." | Read more » | over 9 years ago |