| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| donblair | "Hi Chris -- great stuff! Changed the color bar in an attempt to match yours (haven't yet implemented the max / min values, yet), and added some ex..." | Read more » | over 11 years ago | |||
| cfastie | "The blue channel display is a good addition. It is not only a good diagnostic, but it helps everybody understand how the whole infrablue thing work..." | Read more » | over 11 years ago | |||
| donblair | "Chris -- I'm looking into generating the color table you're using -- it does indeed nicely distinguish above- and below-zero NDVI values -- and I'l..." | Read more » | over 11 years ago | |||
| cfastie | "Another good diagnostic tool for the Infrapix app could be display of a grayscale image of the blue channel of the infrablue photo. For example, th..." | Read more » | over 11 years ago | |||
| cfastie | "I think the new consistent relationship between NDVI values and color is good. If this causes some infrablue photos to produce boring (all the same..." | Read more » | over 11 years ago | |||
| donblair | "Follow-up -- the downside with having a set colortable for NDVI, from -1 to 1, is that a lot of the images are going to look pretty boring. One id..." | Read more » | over 11 years ago | |||
| donblair | "Update -- I've changed the infrapix code so that it always displays a color table that spans the full range of possible NDVI values (-1 to 1). Not..." | Read more » | over 11 years ago | |||
| donblair | "Jeff -- great, promising set of experiments here! Re: the color settings on the Infrapix app -- sorry, now I see (from your note, and in conversat..." | Read more » | over 11 years ago | |||
| warren | "My best hypothesis right now is that it's related to the Bayer filter in the camera itself, so I'm hoping to order more different cameras and find ..." | Read more » | over 11 years ago | |||
| MegaFlare252 | "Is that something that could be corrected with a specific filter or an inherent issue with the quality of the camera? " | Read more » | over 11 years ago | |||
| warren | "Well, definitely WB is an element, but what seems to be the big thing is that on these cheaper cameras (with the exception of the one Stewart teste..." | Read more » | over 11 years ago | |||
| MegaFlare252 | "Perhaps the exposure settings play a big part as well. Brenden at flightriot.com and myself (mostly him) have been experimenting with different ca..." | Read more » | over 11 years ago | |||
| warren | "Yeah, that guy's been on the infrared mailing list a lot recently (http://publiclab.org/wiki/mailing-lists) and it's great to see his results. Stil..." | Read more » | over 11 years ago | |||
| MegaFlare252 | "From what I understand (which is not much, I'm pretty new to this) and have found online is that for some reason, CMOS cameras produce results that..." | Read more » | over 11 years ago | |||
| lemmiwinks | "Is there any thought or possibility to make this camera active rather than passive? " | Read more » | over 11 years ago | |||
| cfastie | "I played with this image quite a bit, and could get very little plant health information from it. You recognized one of the problems -- there is no..." | Read more » | over 11 years ago | |||
| warren | "The idea of using green for visible light isn't nearly as good as blue or red... but Chris is right, the green channel doesn't seem to leak as much..." | Read more » | over 11 years ago | |||
| warren | "Re: option 3, i was half-heartedly thinking of making a second Bayer filter by photographing a checkerboard on film and printing lots of negatives,..." | Read more » | over 11 years ago | |||
| cfastie | "I think your analysis is good. NIR is passing through all three Bayer filters (even the green channel has light foliage). So there is not a very go..." | Read more » | over 11 years ago |