| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Yes of course!!! " | Read more » | over 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 » | over 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 » | over 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 » | over 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 » | over 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 » | over 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 » | over 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 » | over 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 » | over 4 years ago | |||
| rrajbhar754 | "Very nice post. " | Read more » | over 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 » | over 4 years ago | |||
| starstalenthunt | "Star Talent Hunt : Find your Dream Job Now and Get a chance to become famous in entertainment industry. " | Read more » | over 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 » | over 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 » | over 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 » | almost 5 years ago | |||
| nickyshen0306 | "Thanks for giving me so many solutions!! I will try it. " | Read more » | almost 5 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 » | almost 5 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 » | almost 5 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 » | almost 5 years ago |