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Author Comment Last activity Moderation
guolivar "Short answer is NO ... longer answer is still no but with some reasons behind. In general the EPA (and any other regulatory body) needs A LOT of c..." | Read more » about 1 year ago
Ag8n "Purple air would be the best group to answer this question. If the data exists, it would help the sales of the purple air instruments. A quick lo..." | Read more » about 1 year ago
DavidMack "You could probably use HD parts. It just depends on what you are sampling (corrosivity) and the threshold levels of your analysis. Ideally all "w..." | Read more » about 1 year ago
stevie "Hi! tagging in a couple people who might be able to help answer: @Ag8n, @Cbarnes9 , @OrionAllgaier, @BrandonFeenstra, and @guolivar (two for you..." | Read more » about 1 year ago
stevie "Hi! Tagging in a couple people who might have ideas: @guolivar @danbeavers @DavidMack " | Read more » about 1 year ago
liz "Hi @amirberAgain , this post's author links to one of your research notes, and I'm wondering if you'd take a look at not only this question but the..." | Read more » about 1 year ago
liz "@liz awards a barnstar to wln215 for their awesome contribution! " | Read more » about 1 year ago
liz "Hi @wln215 , I just spotted this question and wanted to at least respond in appreciation for you for answering other people's questions. :slightly_..." | Read more » about 1 year ago
keshav_sethi0004 "Thank you Liz for your valuable suggestions. " | Read more » about 1 year ago
liz "Thank you Keshav, this is all looking great! i left more detailed discussion on your PR. Thank you! Great job! " | Read more » about 1 year ago
nestocean85 "upcoming movies https://www.bollywoodcat.com/upcoming-bollywood-movies-list-calendar-release-date/ latest bollywood movies https://www.bollywoodcat..." | Read more » about 1 year ago
keshav_sethi0004 "Please review and give your suggestions, Thanks!! " | Read more » about 1 year ago
icarito "I believe it should be possible to work around the issue by "escaping" the @ symbol. Please excuse the repeated test. https://medium.com/%40sunnyd..." | Read more » about 1 year ago
cfastie "The "WB 0%" photos seem to produce the most meaningful NDVI images for this subject. The photo has a pale version of the turquoise color for plant ..." | Read more » about 1 year ago
cfastie "The "histogram" is a frequency distribution of brightness values (DNs, 0-255) for all of the pixels in a photo, in this case for one color channel...." | Read more » about 1 year ago
ThomasTaufan "This is the original image This is taken with WB 0% This is taken with WB 25% This is taken with WB 50% This is taken with WB 75% This is..." | Read more » about 1 year ago
ThomasTaufan "I have done white balancing manually with the range from the left to the right I defined as 0% - 100%. This is taken with WB 0% This is taken w..." | Read more » about 1 year ago
ThomasTaufan "The histogram of one of the channels was probably stretched (one or more extreme points at either end removed and the rest stretched to fill the 0-..." | Read more » about 1 year ago
cfastie "I used the standard NDVI equation. The histogram of one of the channels was probably stretched (one or more extreme points at either end removed an..." | Read more » about 1 year ago
ThomasTaufan "I have successfully used your color map, but the result is different. What is the equation of NDVI that you used? " | Read more » about 1 year ago
cfastie "With a red filter, photos will be bluish if the blue channel (which is used for NIR) is brighter than the red channel (which is used for VIS). For ..." | Read more » about 1 year ago
lfent "Hi, yes the red filter will capture the red wavelengths and the NIR can be slotted into the Blue channel, NIR will render as blue. You can still ca..." | Read more » about 1 year ago
wangmeising97 "Hi there! Ya I did get the idea from your comment and thanks! Just to reconfirm the concept, so if I use red filter instead, it will absorb green ..." | Read more » about 1 year ago
wangmeising97 "Does it means if I use red filter instead and captured the NIR from blue channel, my image will show blue colour as the light is hitting on the blu..." | Read more » about 1 year ago
lfent "Assuming your blue filter is transparent to NIR (near infrared) wavelengths, any red in the image is depicting NIR reflection. The blue filter will..." | Read more » about 1 year ago
cfastie "The camera does not know the color of the light that hits a pixel on the sensor. If more photons hit the pixels linked to the red channel than pixe..." | Read more » about 1 year ago
cfastie "Is it by trial and error until the color of plant is like the one you provided? Yes, that would be a good way to do it. What the camera is pointed..." | Read more » about 1 year ago
ThomasTaufan "How can I use your colormap in MATLAB? Thanks Chris " | Read more » about 1 year ago
ThomasTaufan "Many cameras have a feature that allows a custom white balance. If the software for your camera does not allow this, it is not an option for you. ..." | Read more » about 1 year ago
cfastie "What should I do to this pictures to improve the NDVI calculation? There is not much that can be done after the photo is taken to improve its abil..." | Read more » about 1 year ago