| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | "Would he be low-noise green? :-) I'd also love to see them plotted on the same graph, maybe with the graph lines themselves in appropriate colors...." | Read more » | over 8 years ago | |||
| viechdokter | "Yeah, I think I could do it. Hmh, I must admit that I only pretty recently started to use Excel-like programs at all. To be honest, your research n..." | Read more » | over 8 years ago | |||
| stoft | "I believe both Excel and Quattro Pro provide for multiple plots. I suspect your's may as well -- in Quattro it's under the specialty xy plotting. I..." | Read more » | over 8 years ago | |||
| viechdokter | "Yes, you are right. I, too, like comparable curves better. I used LibreOffice, a kind of public domain "Excel". It plots diagrams automatically and..." | Read more » | over 8 years ago | |||
| stoft | "Not to worry, I too find bits to revise after I publish; what counts is fixing the details as they appear. One thought on visualization. When I do ..." | Read more » | over 8 years ago | |||
| viechdokter | "@stoft : sorry I had to revise the research note as there was a big mistake in the red curve. I exchanged it with the new revised red curve and now..." | Read more » | over 8 years ago | |||
| stoft | "Right. That's the Bayer filter pattern which sits in front of the imager chip and gives double the signal sensitivity for Green -- a simulation of ..." | Read more » | over 8 years ago | |||
| viechdokter | "@stoft : RGGB like in this picture? " | Read more » | over 8 years ago | |||
| stoft | "Good observations! Remember that the AGC is likley based on the sum total over the entire image; not per pixel. If there were independent AGC per c..." | Read more » | over 8 years ago | |||
| ecta64 | "That is fantastic!! I have been trying to find a reputable structure from motion capable freeware program like the ones in these links for the past..." | | almost 10 years ago | |||
| nedhorning | "You could try using VisualSFM(http://ccwu.me/vsfm/). I played around with that a couple years ago and remember seeing video of someone who created ..." | | almost 10 years ago | |||
| ecta64 | "Interesting but yes the pixel value is still a problem. Hopefully someone will come up with a freeware tool for video mosaic mapping. It would real..." | | almost 10 years ago | |||
| nedhorning | "For what it's worth the software to make mosaics out of oblique images will correct the image geometry but it is unlikely going to correct the pixe..." | | almost 10 years ago | |||
| ecta64 | "Yes I'm imaging from a pole and that's the primary reason for the oblique angle. I have tried Nadir imagery but since my pole is only 4 meters its ..." | | almost 10 years ago | |||
| nedhorning | "I wouldn't say the time of day doesn't matter but it is more important to be consistent. You are imaging at an oblique angle (from a pole?) so you ..." | | almost 10 years ago | |||
| ecta64 | "So it really doesn't matter the specific time of day or sun angle as long as I stay consistent? Honestly I'm just photographing to learn proper wor..." | | almost 10 years ago | |||
| nedhorning | "Hi - Different sensor, target, illumination geometries will tend to give different NDVI values of the same vegetation. The difference in impact bet..." | | almost 10 years ago | |||
| Babu | "Hi all, I have a question about White balancing. As i have mentioned earlier, the modified camera RED band is mix of RED+NIR, green band is more NI..." | Read more » | almost 12 years ago | |||
| cfastie | "Babu, You might be right that the blue channel is more sensitive to NIR, based on the fact that the healthy foliage in your super blue photo has a..." | Read more » | almost 12 years ago | |||
| Babu | "Thanks Chris for your nice comments and sugesstions. I have some more confusion which i am looking to resolve. As i know Bayer filter used in this..." | Read more » | almost 12 years ago | |||
| cfastie | "Babu, The new camera is going to be very fun to use. It would be interesting to see a histogram for each channel from an image like that one. We c..." | Read more » | almost 12 years ago | |||
| Babu | "Dear All I have attached the first image with my modified camera, where internal hot mirror filter is replaced by the Lifepixel super color filte..." | Read more » | almost 12 years ago | |||
| Babu | "Thank you cfastie for your kind sugession. I will be in touch very soon with the image captured from the modified camera. Thanks alot " | Read more » | almost 12 years ago | |||
| cfastie | "Babu, Here is a paper about getting separate NIR and red bands by doing what Ned suggested – subtracting one band from another: http://cigr.ageng20..." | Read more » | almost 12 years ago |