Craig, Did you ever get this figured out? I am also interested in optical calibration of WV03 images. Also, the calibration factor and effective bandwidth are embedded into each of the .imd files that come with the imagery from Digital Globe. I don't know if these are ever updated in any way, but it seems like a good idea to pull them directly from the .IMD file for each image when it is imported.
e.g. (Coastal band: absCalFactor = 6.679371e -02; effectiveBandwidth = 4.050000e -02...etc.) Morgan On Monday, February 19, 2018 at 8:02:52 AM UTC-8, Craig wrote: > > I would like to perform atmospheric correction on WorldView-3 8-Band VNIR > MSI. I found a radiance response file here: > https://git.orfeo-toolbox.org/otb-data.git/tree/HEAD:/Input/Radiometry/DigitalGlobe. > > However, I do not think it is in the correct format. I believe what is > expected is for the first column to be wavelengths in microns (not > nanometers), the second column should be solar irradiance (not provided in > the file), and the next columns are the spectral responses for each band. > I think I can use the Thuillier 2003 spectral response curve listed here: > https://dg-cms-uploads-production.s3.amazonaws.com/uploads/document/file/207/Radiometric_Use_of_WorldView-3_v2.pdf, > > but I'm not sure what order the bands should be listed. The provided file > has PAN, C, B, G, Y, R, RE, N1, N2, S1, S2, S3, S4, S5, S6, S7, S8. I think > since I have just the 8-band VNIR product that I should have them in C, B, > G, Y, R, RE, N1, N2 order with the others excluded from the file, but I'm > not sure. Also, what units should the spectral response values be in? The > provided file has them as radiance values. > > Thanks, > > Craig > -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
