| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| JoshMc | "Hey ikerluna! I don't know about the webcam you're using or how it's designed, but basically any webcam focus is going to be adjusted by moving th..." | Read more » | about 11 years ago | |||
| ikerluna | "hello JoshMc I want to take pictures at close range, do you figure out how can I fix the focus problem ? Thanks, " | Read more » | over 11 years ago | |||
| warren | "I know some people use the magnetic film from floppy disks, and I think i have some, if you want to try. " | Read more » | over 11 years ago | |||
| nedhorning | "There are gel and glass NIR-block filters that you can buy that do a pretty good job at blocking visible light. There might also be some other free..." | Read more » | over 11 years ago | |||
| mrrg | "Is it not possible to eliminate the visible light? " | Read more » | over 11 years ago | |||
| nedhorning | "My guess is that you would get the same effect that you get with a blue card if you used a gray card and then multiply the blue channel by a factor..." | Read more » | over 11 years ago | |||
| warren | "Definitely the IR and vis are mixing unmeasurably, but I'm wondering if the blue card contributes to the sum amount of light being reflected in the..." | Read more » | over 11 years ago | |||
| cfastie | "Jeff, Our goal is to have 1) a red channel which records how much NIR is reflecting from plants, and 2) a blue channel which records how much blue ..." | Read more » | over 11 years ago | |||
| cfastie | "Ned, The G11 photos in the panel above were recorded in camera raw. According to my naïve model of what camera raw does, it should be possible to t..." | Read more » | over 11 years ago | |||
| mathew | "Nice work with the LEDs. Look forward to seeing the setup at the Barnraising. " | Read more » | over 11 years ago | |||
| warren | "I love the theory that the blue card is flooding the blue channel to minimize or outweigh or "wash out" the infrared from that channel. I think tha..." | Read more » | over 11 years ago | |||
| nedhorning | "This white balance stuff got me thinking. I don't think the white balance actually changes the amount of light recorded by the sensor but instead m..." | Read more » | over 11 years ago | |||
| warren | " " | Read more » | over 11 years ago | |||
| cfastie | "The relative amounts of NIR vs visible light in each channel is definitely a big and important unknown. The camera can't do anything to change that..." | Read more » | over 11 years ago | |||
| nedhorning | "With the Infrablue filter there is both visible and NIR light hitting the camera sensor and it would be helpful to know how different wavelengths a..." | Read more » | over 11 years ago | |||
| mrrg | "okay, I was thinking you do not need to characterize it just treat all of it as NIR if you have a good filter.. Why do you need to characterize it?..." | Read more » | over 11 years ago | |||
| warren | "I guess the WB introduces a big unknown about the relative amounts of NIR vs visible light. One way the NIR and VIS might mix in blue is that perha..." | Read more » | over 11 years ago | |||
| nedhorning | "Sorry for not explaining this better. We were just trying to understand which sensor channels are recording which wavelengths of light. The images ..." | Read more » | over 11 years ago | |||
| mrrg | "Maybe I have misunderstod what you try to do.. but what if you add thicker sheet of HDPE plastic in front of the camera then only NIR would get thr..." | Read more » | over 11 years ago | |||
| warren | "Hi, jyalarid - we are definitely planning a live streaming version of the infragram software: https://github.com/Pioneer-Valley-Open-Science/infrap..." | Read more » | over 11 years ago | |||
| jyalarid | "is it possible to for the webcams to stream videos and run through the plugin all while being viewed in real time? So essentially I am asking if I ..." | Read more » | over 11 years ago | |||
| patcoyle | "Nice indeed! What tools are you using to stitch the images? " | Read more » | over 11 years ago | |||
| warren | "Wow, very nice map! How have you modified the a495? " | Read more » | over 11 years ago | |||
| bc512 | "for free of course, that above sounded a lot like business talk haha, But no i am just happy to help! " | Read more » | over 11 years ago |