| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| mathew | "you may want to connect with @John_Wells and the West Lothian Archaeological Society about filters for identifying underground features. They've b..." | Read more » | over 8 years ago | |||
| rahulrajias | "is it possible to operate/connect 2 pi cameras simultaneously with one pi ??? " | Read more » | over 8 years ago | |||
| cfastie | "Correct. If the Wratten 25A camera requires exposures that are too long, you can just shoot normal photos and use the red channel for VIS (so don't..." | Read more » | over 8 years ago | |||
| Steven | "Ok, so if I understand you correctly, using a standard PiCam with the IR filter un-removed and a Wratten 25A filter added to the PiCam, while takin..." | Read more » | over 8 years ago | |||
| cfastie | "If you use the Fiji plugin to make NDVI, you will not need the techniques in the video above. The plugin does the comparison of NIR and VIS for eac..." | Read more » | over 8 years ago | |||
| Steven | "Thanks, that's helpful . Yes, it is possible to operate two PI cameras from one Pi (though I'm still sorting through the debate/speculation about t..." | Read more » | over 8 years ago | |||
| cfastie | "Can you operate two Pi cameras from one Pi? If so, you should be able to trigger the shutters simultaneously which is important. The Pi NoIR could ..." | Read more » | over 8 years ago | |||
| Steven | "Yes, a long exposure wouldn't be practical because of the instability of the platform the camera would be on (cost is also a limiting factor). My t..." | Read more » | over 8 years ago | |||
| cfastie | "There are a few options for getting both a visible light image and an NIR image of the same scene. The DIY approaches vary in their ability to dist..." | Read more » | over 8 years ago | |||
| Steven | "Thanks @cfastie ... So, are you saying this would be a matter of using one camera with the blue filter and one camera with the Rosco #19 "Fire" fil..." | Read more » | over 8 years ago | |||
| cfastie | "Hi Steven, This type of analysis should be viable. I have not seen examples of pure NIR photos providing more information than good normal photos ..." | Read more » | over 8 years ago | |||
| Steven | "@warren, Thanks for the response, that's interesting, but not exactly what I am looking for. I am actually interested in trying to identify subsurf..." | Read more » | over 8 years ago | |||
| warren | "Hmm, you should check out this video as an example -- is this close to the technique you're looking for, albeit of a different subject? https://pub..." | Read more » | over 8 years ago | |||
| Steven | "@warren, I was wondering if it would it be possible to use a variation of this technique to combine a series of images taken over the course of a g..." | Read more » | over 8 years ago | |||
| warren | "Hi, you can do this online, actually, at http://infragram.org, if you use a single image. But for some samples, go back in the history for research..." | Read more » | almost 9 years ago | |||
| Marlin | "For Warren, Where can I get two starter images like you used here so that I can learn to do the NDVI transformation in GIMP: http://publiclab.org..." | Read more » | almost 9 years ago | |||
| Bluemountainsurfer | "Nice work! Thanks for developing these tools. I've spent thousands of hours and many thousands of dollars detecting, collecting, and analyzing oil ..." | Read more » | over 9 years ago | |||
| amysoyka | "Thanks for that map. I hadn't seen that one before. I will add it to my collection. I agree with your sentiments on reading the landscape. As I s..." | Read more » | over 9 years ago | |||
| eymund | "Thanks for the research details Amy ! Very useful. Learning to "read the landscape" is fascinating. The clues are all around us. Here's another..." | Read more » | over 9 years ago | |||
| amysoyka | "Here - I started mapping out my old hometown & its waterways: mapknitter.org/map/view/cromernorfolkuk You should be able to see for yourself -..." | Read more » | over 9 years ago | |||
| amysoyka | "That is some really useful/interesting stuff your revealing there! Interestingly enough I know a fair bit about this from personal experience. I ..." | Read more » | over 9 years ago | |||
| MelissaN | "Love the podcast idea (with proper mics!). " | Read more » | over 9 years ago | |||
| laurenrae | "Note - if you tried to watch this and the video isn't working, check back in an hour. I have to go to class so I didn't have time to wait for it t..." | Read more » | over 9 years ago | |||
| mollydanielsson | "This is so awesome that you're making videos with a real video mixer using digital recordings. Excellent modern mashup. " | Read more » | over 9 years ago |