infrared
infrared


Author Comment Last activity Moderation
warren "Yes of course!!! " | Read more » about 4 years ago
yaina "This is this illuminating article for all of us. Extremely incredibly seriously incomprehensible content parts. We essentially gain searching state..." | Read more » about 4 years ago
lev29 "Thank you, Chris! You've given me much to read and think about, but please, don't misconstrue that as meaning you shouldn't add any additional pert..." | Read more » about 4 years ago
cfastie "Using green foliage (or chlorophyll) to set a custom white balance deserves more consideration than I gave it in my last comment. Foliage absorbs r..." | Read more » about 4 years ago
cfastie "The goal of the custom white balance hack is to fool the camera into wildly exaggerating the brightness of the blue channel (when using a red filte..." | Read more » about 4 years ago
lev29 "Thank you so much, Chris! With respect to what to use as a reference to calibrate the White Balance (WB), I have not yet "digested" whether your re..." | Read more » about 4 years ago
cfastie "If your K610 filter is a cutoff filter that passes wavelengths greater than 610nm and blocks shorter wavelengths, then it is similar to many filter..." | Read more » about 4 years ago
lev29 "Thank you, Chris, for helping to clarify my question. In fact, as you suspected, I was misusing the term "bandpass"! Those I signify with a "K" fol..." | Read more » about 4 years ago
cfastie "`>> for simple bandpass filters, I use the letter "K" followed by the approximate cutoff wavelength Are your filters bandpass filters or cut..." | Read more » about 4 years ago
rrajbhar754 "Very nice post. " | Read more » about 4 years ago
warren "Hi, you can use this simpler sequence for that: https://sequencer.publiclab.org/examples/#steps=ndvi,colormap This will just apply NDVI and the c..." | Read more » about 4 years ago
starstalenthunt "Star Talent Hunt : Find your Dream Job Now and Get a chance to become famous in entertainment industry. " | Read more » about 4 years ago
ThomasTaufan "Chris, please look at my image taken from modified camera using red filter bought from Public Lab. Is this the correct results or should I do some ..." | Read more » about 4 years ago
ThomasTaufan "how to process single multispectral image with the modified webcam and red filter? Because when I saw your example, it is processing 2 images that ..." | Read more » about 4 years ago
ramprasadraju1998 "This is one of the best blog for free Model papers 2020 About AP 10th 12th intermodelPapers, WHich can be very helpful fro your Daily life. Stay in..." | Read more » over 4 years ago
zomb23 "Hi Chris, thank you for the quick and comprehensive response. That sounds really promising. I will look into chlorophyll fluorescence and if/how I ..." | Read more » over 4 years ago
jevs "Apparently a capital F and a lowercase f mean something different. I changed my post to a lowercase f=3.85mm. Apparently f is focal length and F is..." | Read more » over 4 years ago
stef "there may be some answers for you in the research notes produced by @Stoft and @Warren on the topic of camera's native resolution and optics as a ..." | Read more » over 4 years ago
cfastie "I think NDVI will provide some information about the photosynthetic rate of mosses. Moss leaves capable of rapid photosynthesis will probably be ab..." | Read more » over 4 years ago
nstarli "Where can I find the blue calibration card? I could not find it on the public lab store. " | Read more » over 4 years ago
nickyshen0306 "Thanks for giving me so many solutions!! I will try it. " | Read more » over 4 years ago
lfent "@cfastie I found that I needed the heavy cyan filtration (at the expense of all the exposure variables you mention) to achieve an image approximati..." | Read more » over 4 years ago
cfastie "@lfent, Is there any difference between using two filters and using one filter if both photos are exposed so the photos have the same general brigh..." | Read more » over 4 years ago
lfent "Yes, a cyan filter will block the red light from the red-NIR pixels, may I suggest the Rosco 4390 CalColor 90 Cyan gel filter. I found that I need ..." | Read more » over 4 years ago