| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| cfastie | "ImageJ and Fiji have very powerful tools for extracting, summarizing, and displaying the NDVI values in the floating point images produced by Ned's..." | Read more » | almost 8 years ago | |||
| ahcalori | "@cfastie. I think you are right. The problem must be the filters. I will open the cam and see what happens. I'm just using the product the way I bo..." | Read more » | almost 8 years ago | |||
| cfastie | "The color gradient in the photos taken by your modified camera seems to be the cause of the artifacts in your NDVI image. To determine whether this..." | Read more » | almost 8 years ago | |||
| ahcalori | "Hi, dear @cfastie, the webcam that I have been used is described in the follow link: https://www.adafruit.com/product/1722. The filter used allow ..." | Read more » | almost 8 years ago | |||
| ahcalori | "@cfastie, Is not the Mobius camera. Is just one with modified filters. I will post the specification here. Thanks! " | Read more » | almost 8 years ago | |||
| cfastie | "Although the diagonal color gradient is not conspicuous in the NDVI image, it is present in the NIR photo (pinkish in the lower left and bluish in ..." | Read more » | almost 8 years ago | |||
| ahcalori | "@cfastie, Thanks for reply. The camera that has been used is one bought in the 'Public Lab Store'. The curious fact is that some pics does not has ..." | Read more » | almost 8 years ago | |||
| cfastie | "The color gradient in the NIR photo from lower left to upper right is conspicuous.This could be caused by the ambient lighting or by the camera. Wi..." | Read more » | almost 8 years ago | |||
| mathew | "Followup on automating this process https://publiclab.org/notes/SimonPyle/05-13-2016/automating-imagej-for-particle-image-analysis " | Read more » | about 8 years ago | |||
| mathew | "Although we are hopeful that Simon's strategies listed here can get us to a particle count, If they aren't sufficient Rongjun Qin recommended we lo..." | Read more » | about 8 years ago | |||
| mathew | "You can get the analysis spreadsheet here: https://docs.google.com/spreadsheets/d/1xSVT9lxary0zZhhEqhrX3hsdIb4shbYhaOJx_RWhESg/edit#gid=0 " | Read more » | about 8 years ago | |||
| mathew | "That's a great writeup! thanks Simon. If anyone needs an image set to play with, please e-mail me, and I can share the files. They're too large t..." | Read more » | about 8 years ago | |||
| mathew | "Also see @Damarquis's note on using MaxEntropy https://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-threshold-and-saving-result..." | Read more » | about 8 years ago | |||
| mathew | "I'm working on creating a spreadsheet out of these equations. @Marlokeno it looks like I'm going to use Sutherland's gas law along with average te..." | Read more » | over 8 years ago | |||
| mathew | "excellent suggestion, thanks for pulling that up! On a brief review, it confirms our experience that PM10 is probably the smallest size we can rel..." | Read more » | over 8 years ago | |||
| acenchase | "This is very interesting. May I suggest checking out the guide published by NIST which has some guidelines for performing image analysis by SEM in..." | Read more » | over 8 years ago | |||
| mathew | "@Damarquis has notes on using ImageJ in windows and on thresholding: http://publiclab.org/notes/Damarquis/10-20-2015/using-imagej-to-analyze-thresh..." | Read more » | over 8 years ago | |||
| marlokeno | "It is possible the wikipedia article on Reynolds numbers might help- https://en.wikipedia.org/wiki/Reynolds_number At any rate, the article does g..." | Read more » | over 8 years ago | |||
| marlokeno | "There is an article in "Aeolian Research", Dec. 2014, entitled "The size distribution of desert dust aerosols and its impact on the Earth system." ..." | Read more » | over 8 years ago | |||
| unsignedint | "Hello liz, I think B&W+Green reveals the presence of IR very clearly. The problem is that the intensity is hard to tell, so other color schemes..." | Read more » | almost 10 years ago | |||
| liz | "This B&W and green image is so striking! " | Read more » | almost 10 years ago | |||
| unsignedint | "Hello Chris! Answering your question What is the "A" in RGBA? Alpha. For this application, it probably does not make any difference whether I pas..." | Read more » | almost 10 years ago | |||
| cfastie | "Blender looks to be quite capable. I have some questions about your 3 step process to make the color mapped image: What is the "A" in RGBA? You s..." | Read more » | almost 10 years ago | |||
| mercyorangi | "Hi Warren, tags already added :-) " | Read more » | about 10 years ago |