| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| Nanfeng | "Hi Ned, This is a really nice work. I have a couple of questions about the conversion between the DNs of JPEG images and that of raw images. The F..." | Read more » | about 9 years ago | |||
| fgiorlando | "Interesting stuff indeed, I have been lurking here for a while and trying to build a good documentary NDVI camera for a public gardening project. I..." | Read more » | about 9 years ago | |||
| JSummers | "Hi Gretchen, We are making no attempt to degas the sulfuric acid solution. First, we used relatively dilute acid which we assume will behave more ..." | Read more » | about 9 years ago | |||
| gretchengehrke | "Hi Jack, Two quick thoughts: (1) Have you degassed your sulfuric acid too? For whatever reason, in my experience, H2SO4 takes longer to degas than..." | Read more » | about 9 years ago | |||
| nedhorning | "The value of camera calibration depends on what you're doing. If you're just looking for relative differences across an image calibration isn't all..." | Read more » | about 9 years ago | |||
| Joseal | "Thanks for your kind answer Ned: I will try to start the experiment of the spectroradiometer on the calibration targets during different times of ..." | Read more » | about 9 years ago | |||
| bwarzak | "Ned, Our company is supposed to be writing an article for Vision System Design magazine regarding uses for dual band filters. I realize that the r..." | Read more » | about 9 years ago | |||
| Thorsten | "I had no problems with using lens filters so far. But it would be interesting if there is some reason to better replace the IR Filter instead. " | Read more » | over 9 years ago | |||
| nedhorning | "I don't have experience with lens mounted filters but you might get some feedback if you post your question on the plots-infrared list at http://pu..." | Read more » | over 9 years ago | |||
| zeigerpuppy | "I am thinking of getting a modified DSLR for NDVI imaging and am having trouble deciding between two different options - camera with Schott BG3 fil..." | Read more » | over 9 years ago | |||
| nedhorning | "Hi Giovanni - You should be able to use the photo monitoring plugin to process images from different cameras even if the cameras have different se..." | Read more » | over 9 years ago | |||
| Giovanni1983 | "Hi Ned, I'm newbie here so I hope my comment will be read. I also apologize in advance for all the language mistakes i'll do during this conversati..." | Read more » | over 9 years ago | |||
| nedhorning | "Hi manattta - Keep in mind that white balance and calibration are two different processes. White balance is used to adjust the in-camera processing..." | Read more » | over 9 years ago | |||
| manattta | "Hi ned. Thank you for posting your work. I was wondering, and I just want to check, for flying a small UAV with a single NIR camera, with the cali..." | Read more » | over 9 years ago | |||
| eustatic | "this is cool. thanks, chris " | Read more » | over 9 years ago | |||
| cfastie | "He didn't listen when they told Thomas Edison "You've tried enough filaments." He didn't listen when they told George Washington Carver "We don't n..." | Read more » | over 9 years ago | |||
| warren | ";-) can't we just choose a color and stick with it, Chris? " | Read more » | over 9 years ago | |||
| nedhorning | "Hi - Using a field spectroradiometer for getting reflectance values of targets is a good idea. It would probably be best if you can take reflectanc..." | Read more » | over 9 years ago | |||
| Joseal | "Ned, I have two question: ¿What do you think about using a field spectroradiometer for reflectance values of targets? Do you think that is necessa..." | Read more » | over 9 years ago | |||
| Joseal | "Thank you very much Ned. This information will help me a lot to improve my procedures for agricultural monitoring using NDVI. " | Read more » | over 9 years ago | |||
| stoft | "Light is a wave, but think about it as particles. The 'beam' of light is aligned within a relatively narrow angle between a slit and the diffractio..." | Read more » | over 9 years ago | |||
| btbonval | "That is a good question. There are many factors that can change how the light interacts with the cmos. No optical system can assure it without som..." | Read more » | over 9 years ago | |||
| warren | "Hi, check this out -- @hynae ! " | Read more » | over 9 years ago | |||
| warren | "Very cool! I want to be sure @sophie, @ewilder, @Clarke_Brian, @deepwinter, @megan, and @fernandolunav see this and you all can coordinate on diffe..." | Read more » | over 9 years ago |