| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| suman | "Dear Chris, After some thoughts , i believe Rosco 19 is not accurate enough, i mean it collects only few spectrum of infrared. If ..." | Read more » | over 7 years ago | |||
| suman | "Dear Chris, Thank you so much for your reply. So the accuracy relies on the custom white balance settings. I found one interesting..." | Read more » | over 7 years ago | |||
| cfastie | "The spectral response graphs supplied by Rosco don't go past 740 nm. So we are assuming that there is some transmission farther into the near infra..." | Read more » | over 7 years ago | |||
| suman | "Dear Chris & Mathew, Does the Rosco 19 Fire allows the light spectrum from only 560 to 740 nm range? The Wratten 25 A transm..." | Read more » | over 7 years ago | |||
| suman | "Dear Warren, I am currently looking some literatures on Image Vignetting Correction. I will definately post back after i come ..." | Read more » | over 7 years ago | |||
| warren | "Ah, i've just learned that I didn't know the definition of vignetting. But I do now -- apologies for mixing this up! I haven't heard anything about..." | Read more » | over 7 years ago | |||
| suman | "Dear Warren, I checked about the lens vignetting correction under the tag Lens-distortion as you mentioned. However, i didn't ..." | Read more » | over 7 years ago | |||
| suman | "Thanks for your prompt response warren.....highly appreciable.... Cheers " | Read more » | over 7 years ago | |||
| suman | "Thanks for your prompt response warren.....highly appreciable.... Cheers " | Read more » | over 7 years ago | |||
| warren | "There are a few different approaches to this too, but one which definitely works is documented alongside an in-progress web-based approach, both un..." | Read more » | over 7 years ago | |||
| suman | "Thanks for your response warren and Chris...I highly appreciate it..I was also interested to know about the vignetting effect and how public labs i..." | Read more » | over 7 years ago | |||
| cfastie | "Do you think i need the targets of known spectral reflectivity in the same bands that will be used to compute NDVI or it can be tested with any mat..." | Read more » | over 7 years ago | |||
| warren | "Hi -- well, there may be methods like that; just to put in another idea, although you probably won't want to do it; Dorn Cox from Farm Hack has act..." | Read more » | over 7 years ago | |||
| suman | "Some initial results using your white balance settings are impressive, however in this particular picture the roof of the house is showing high pho..." | Read more » | over 7 years ago | |||
| sujayj | "@cfastie This is very interesting. Thank you! " | Read more » | over 7 years ago | |||
| cfastie | "Yes, we are going to change the pixel values in our photo. For each pixel in the photo we have taken of vegetation, we use the DN in the red channe..." | Read more » | over 7 years ago | |||
| sujayj | "@cfastie This is a very informative article. However, It isn't clear what is to be done after obtaining the final graph as you've shown. Are we goi..." | Read more » | over 7 years ago | |||
| bwarzak | "I agree with Chris. Narrower bands, when they are optimally centered, logically will work better, particularly because - virtually inherent with in..." | Read more » | almost 8 years ago | |||
| cfastie | "Some blue filters including Wratten 47, Schott BG3, and Rosco 2007 are dual bandpass red-rejection filters. They require that blue light be used fo..." | Read more » | almost 8 years ago | |||
| suman | "I have just been going through a peer reviewed journal paper named 'Monitoring plant condition and phenology using infrared sensitive consumer grad..." | Read more » | almost 8 years ago | |||
| reversevector | "Since these cheap consumer cameras have a lot of NIR crosstalk, especially with small sensor cameras like the GoPro, would it be better to subtract..." | Read more » | almost 8 years ago | |||
| nedhorning | "I do not have any peer-reviewed papers related to this work - sorry. Ned " | Read more » | almost 8 years ago | |||
| suman | "Dear Ned, Recently i have been going through your interesting works on Infragram NDVI and calibration. I was wondering if you had a..." | Read more » | almost 8 years ago | |||
| FrankA | "Hi Suman. This is my setup… Mobius Action cam Docking station + Foam anti vibration tubing… all held on with quick release cable ties. I have the..." | Read more » | almost 8 years ago |