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Author Comment Last activity Moderation
saberali0721 "If you're a fan of hunting, the 8Xbet trò chơi săn mồi in Vietnam might be for you. This card game is a modern version of the traditional Vietnames..." | Read more » over 1 year ago
scarletjohnson "I am a scarlet johnson doing a job as a marketing consultant at vonza in USA, Vonza helps thousands of business owners just like yourself launch an..." | Read more » over 2 years ago
unlimitediq2001 "Wow that's cool if I put an IR Illuminator infront of my camera and solder it to a 9volt battery holder will this be able to get the camera to work..." | Read more » over 3 years ago
nestocean85 "https://onlinemocktest2.blogspot.com/2020/06/sbi-po-2021-exam-important-information.html https://boxofficeindiablog.wordpress.com/2020/06/08/ajay-d..." | Read more » over 3 years ago
umberto_rootman "I posted a lot of findings about many other filters today, with sample pictures. I got my sample book of 200 filters (of which are ca. 80 of some u..." | Read more » almost 4 years ago
liz "Super, just modified title to "Use 3-D glasses to modify a camera for infrared" -- this will help people understand what content is here when they ..." | Read more » almost 4 years ago
umberto_rootman "All pictures have undergone 'auto levels'. This particular camera does not have to be white balanced. For many cameras, one has to white balance wi..." | Read more » almost 4 years ago
umberto_rootman " Another great source for infrared color photos: a Roscolux sample book of 200 filters, of which at least 50 - 80 filters are useful. https://us...." | Read more » almost 4 years ago
umberto_rootman "Excellent! On Wed, May 20, 2020 at 5:55 PM \<notifications@publiclab.org> wrote: Hi! There's been a response to your research note 'Cheap s..." | Read more » almost 4 years ago
liz "What would you say to the idea of changing the title of this post to "use 3-D glasses to modify a sport cam for infrared" ? " | Read more » almost 4 years ago
umberto_rootman "In the glare in the wind mill pic, left above, is a small spectrum visible, which illustrates which wavelengths are blocked by the filter: there is..." | Read more » almost 4 years ago
liz "Thank you! Great pic of the glasses cut up! " | Read more » almost 4 years ago
umberto_rootman "As stated, the cyan filter was cut out from 3-D glasses " | Read more » almost 4 years ago
liz "Thanks for sharing this! Very cool. I don't think i've seen anyone discussing a cyan filter before, can you share a link to what you're using? " | Read more » almost 4 years ago
umberto_rootman "The great thing about using the cyan or blue filter with a modded sports cam is the ability to record images or video without having to resort to c..." | Read more » almost 4 years ago
umberto_rootman "I often use an orange-red filter, handheld in from of the camera, from a scrapped enlarger. I do a white balance with the eye dropper tool in PS, G..." | Read more » almost 4 years ago
warren "I posted an activity for doing NDVI-like work using a camera like this -- with a coefficient (on the output of NDVI, so like "boosted" NDVI) here: ..." | Read more » over 5 years ago
warren "Ah! https://publiclab.org/notes/cfastie/08-20-2013/white-balance-recovery Flashback! " | Read more » about 6 years ago
warren "I guess to evaluate how well the 2x blue boost I posted above worked, we'd have to compare it to a better system, right? If other folks take a phot..." | Read more » about 6 years ago
cfastie "I have tried several times to adjust the histogram of bad infrared photos. It has always failed and I don't know why. I assume it is because the ad..." | Read more » about 6 years ago
warren "Hmm, could we manually multiply the blue channel by 2 or 3 to do a "post-processed white balance"? Of course this would need to be calibrated, but ..." | Read more » about 6 years ago
cfastie "A single camera NDVI system with a red filter should produce a photo with very turquoise foliage. The blue channel (NIR) should be much brighter th..." | Read more » about 6 years ago
warren "Incandescent white balance seems to work all right! But wait, here it is in NDVI using http://infragram.org -- black is zero NDVI, white is 1.0: ..." | Read more » about 6 years ago
warren "@amanda and I did a take apart session and this is pretty easy to do with a good pair of pliers -- wire strippers worked well! " | Read more » about 6 years ago