| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "That is an interesting question. I think the laser would get rid of chromatic aberration-- its a single frequency of light-- but I'm not sure that..." | Read more » | almost 8 years ago | |||
| marlokeno | "Hi, @mathew and @SimonPyle - Terrific work! After seeing the demonstration mathew gave at the barnraising in November '16, and then looking at Ca..." | Read more » | almost 8 years ago | |||
| marlokeno | "Hi, @bkleist- One thought regarding the moisture obscured lens-if the camera is in an enclosure, a small fan to circulate air should help with cond..." | Read more » | almost 8 years ago | |||
| mathew | "You can see more about the shape descriptors for each particle here: https://publiclab.org/notes/mathew/09-19-2015/using-imagej-to-process-passive-..." | Read more » | almost 8 years ago | |||
| mathew | "The image analysis creates: perimeter of each particle area of each particle circularity of each particle Circularity is the ratio between the..." | Read more » | almost 8 years ago | |||
| warren | "Hi! Just re-reading, is it right that the image analysis produces (as it's complete output): perimeter of each particle area of each particle ..." | Read more » | almost 8 years ago | |||
| DavidMack | "I would stick with the aluminum. It's probably the most commonly used material for PM monitoring because as you stated non-conducting materials ar..." | Read more » | almost 8 years ago | |||
| mathew | "thanks! I've had some trouble getting the illumination aligned with the very tall illumination arm I made. Its complicated as well by the cable of..." | Read more » | about 8 years ago | |||
| warren | "Hi! A few of us tested out a <$100 trail cam which worked really well -- it has a lot of the features you might need: https://publiclab.org/not..." | Read more » | about 8 years ago | |||
| richardbowman | "Hi @matthew, great that you've got some images :) Looking at your graticule, I think your illumination might be misaligned - the blue-yellow gradi..." | Read more » | about 8 years ago | |||
| mathew | "Flatfield and scale images: " | Read more » | about 8 years ago | |||
| mathew | "Here are some image sets including a flat field calibration and scale from the PSL imaging. 20160923_PSL_Sphere_SET.zip " | Read more » | about 8 years ago | |||
| mathew | "Here are some image sets including a flat field calibration and scale from the PSL imaging. 20160923_PSL_Sphere_SET.zip " | Read more » | about 8 years ago | |||
| gretchengehrke | "Hi @bkleist, Interesting stuff! What is your electricity situation and need for being inconspicuous like where you have the camera? I wonder if a ..." | Read more » | about 8 years ago | |||
| stevie | "Hi @bkleist Thanks for posting on this! I know of a few other people who are interested in using cameras to watch for blasting events. So I'm reall..." | Read more » | about 8 years ago | |||
| cfastie | "Hi Ben, I haven't used the motion detection feature of the Mobius but it should work well if you can place the camera where a blast will cause eno..." | Read more » | about 8 years ago | |||
| richardbowman | "Brilliant - I've wanted to make a carry case for absolutely ages, but other things keep getting in the way. I'll be excited to see what you come u..." | Read more » | over 8 years ago | |||
| mathew | "a note to myself: I found this article on calibrating microscopes useful background. http://www.agarscientific.com/media/import/Calibration-of-Micr..." | Read more » | over 8 years ago | |||
| mathew | "thanks Richard! I'll try the new files soon. I'm excited to contribute some mounting files to the project and a carrying case. Will get on those in..." | Read more » | over 8 years ago | |||
| richardbowman | "Hey, nice work :) I have also had problems with the legs getting detached during printing, and discovered there was a bug in my OpenSCAD code - it..." | Read more » | over 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 » | over 8 years ago | |||
| mathew | "oh yes! please read our wiki on frac sand and PM, its getting pretty fleshed out: https://publiclab.org/wiki/frac-sand follow notes as they happen..." | Read more » | over 8 years ago | |||
| sara | "Super excited to read about this project, are their more recent notes on how your project's progressing? " | Read more » | over 8 years ago | |||
| mathew | "I found this great tutorial on automating ImageJ scripting and batch processing. It got me up and batch processing in short order: Arjun Mehta, UC..." | Read more » | over 8 years ago |