Ok Found the answer here: https://groups.google.com/d/msg/otb-users/PGj2tfJ76Zc/XCVCTBQzjpUJ
Am Donnerstag, 13. Februar 2014 13:32:46 UTC+1 schrieb Paul Magdon: > > Dear all > I am facing the same problem and could not find a solution to the > following answer: > "What is OTB doing to a multispectral image when the reader is > instantiated using otb::Image type?" Even thought an otb::VectorImage > would be more suitable the examples (e.g. ImageRegistration.cxx) provide > reasonable results for multispectral images as well and I can not figure > out which band / combination /amplitude is used. > > Any ideas? > > Greetings > Paul > > > Am Mittwoch, 22. Februar 2012 16:52:52 UTC+1 schrieb Julien Michel: >> >> Dear Dominique, >> >> Could it be that you need to use a otb::VectorImage to handle multi-band >> image ? otb::Image are only made for single band images. >> >> Please let me know, >> >> Regards, >> >> Julien >> >> >> Le 22/02/2012 16:18, kapstad a �crit : >> > Hello, I m still stuck on this problem, I can't make it clear. >> > Sometimes all the bands of the image are mixed, sometimes one band >> > appears and sometimes none of them! >> > >> > On 9 f�v, 12:05, kapstad<[email protected]> wrote: >> >> Hello thanks for your response, actually I already created a mutiband >> >> image with one distinctive symbol (I simply wrote R, V, B in gimp) for >> >> each band in order to see which one is used. When reading and writing >> >> it as an otb::image the result is a mix of all the bands, RVB appears. >> >> >> >> On 9 f�v, 10:20, Julien Radoux<[email protected]> wrote: >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >>> Hello, >> >>> otb::image is templated on a type of pixel. If it is a scalar, I think >> >>> that you get the first band. But you could also use, for instance, >> >>> itk::RGBPixel , then you use three bands. Someone else could tell you >> >>> more, but if you want to be sure, plug a writer or a viewer to see the >> >>> image that is used. As for the choice of the band, I would suggest the >> >>> red or the MIR band, for good contrast bare soil/vegetation. >> >>> Hope thisz helps >> >>> Julien R >> >>> On 8 f�v, 16:15,kapstad<[email protected]> wrote: >> >>>> Hello, when performing a registration between two multispectral >> images >> >>>> (Spot scenes) I use the >> itk::MattesMutualInformationImageToImageMetric >> >>>> instantiated over two otb::Image images. >> >>>> When reading a multispectral image with a otb::Image class, which one >> >>>> of the band is used? Actually it seems that all of them are used as a >> >>>> unique one (how does the concatenation is done?). I tried to find it >> >>>> out in the documentation unsuccessfully... >> >>>> Does someone has an idea of how I could evaluate which band is the >> >>>> best one for the registration process? Maybe calculate an ACP before? >> >>>> Regards >> >>>> Dominique >> >> >> -- >> Julien MICHEL >> CNES - DCT/SI/AP - BPI 1219 >> 18, avenue Edouard Belin >> 31401 Toulouse Cedex 09 - France >> Tel: +33 561 282 894 - Fax: +33 561 283 109 >> >> -- -- 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/groups/opt_out.
