pixel components parameters are a pixel value in the input image taken on a cloud which is used as a reference for spectral angle computation.
Manuel Le 23/10/2014 10:01, Daniele Romagnoli a écrit : > Hi, > I have checked again the sample code and I was wrong about the pixel > Components meaning. > I have already checked the software guide. I will check it again using > the input sample data contained in the Example directory to see how it > works. > > Thanks,. > Daniele > > > > Il giorno giovedì 23 ottobre 2014 09:52:45 UTC+2, Grizonnet Manuel ha > scritto: > > have a look to the example in the software guide. There is > explanation of input parameters: > > > http://www.orfeo-toolbox.org/SoftwareGuide/SoftwareGuidech14.html#x42-24200014.8 > > <http://www.orfeo-toolbox.org/SoftwareGuide/SoftwareGuidech14.html#x42-24200014.8> > > Note also that input data used in the example are publicly > available in the OTB-Data repository (Example directory): > > http://hg.orfeo-toolbox.org/OTB-Data/file/tip/Examples > <http://hg.orfeo-toolbox.org/OTB-Data/file/tip/Examples> > > Regards, > > > Le 22/10/2014 17:06, Daniele Romagnoli a écrit : >> Hi all, >> I was able to compile and install the OTB, using the >> configuration which also builds examples, tests and applications. >> I'm trying to use the CloudDetectionExample but it's not clear to >> me how to use it. >> It takes 11 params. >> >> *inputFileName >> outputFileName >> printableInputFileName >> printableOutputFileName >> >> firstPixelComponent >> secondPixelComponent >> thirdPixelComponent >> fourthPixelComponent >> >> variance >> minThreshold >> maxThreshold >> * >> I assume the first four of them are input/output files and names. >> Then the other four are reference pixels. >> Finally there is variance and min and max thresholds. >> I have a couple of questions about these params. >> What should I provide? >> About Nth-PIxelComponent I assume I should provide an image >> representing a cloud. Is it right? If affirmative, how big should >> be that image? a simple cloud? an area with several clouds? An >> area with different shapes of clouds? Really not sure about what >> should I provide. (What about data type. Could I provide Byte >> images?) >> Supposing I'm working with Gray images, I think I can modify the >> example and rebuild it OR setup (using GDAL) an RGBA image on top >> of the gray one. In any case, the number of the components pixels >> params should be the same of the number of bands of the input >> image; right? >> >> What about variance and thresholds values? >> >> Please, let me know. >> Best Regards, >> Daniele >> >> On Wednesday, October 15, 2014 9:32:03 AM UTC+2, Andrea Aime wrote: >> >> Hi, >> I've just installed otb-bin on a Ubuntu machine, hoping to >> run cloud detection >> against some satellite imagery. >> Unfortunately I don't see the algorithm being exposed among >> the cli applications... am I overlooking something? >> >> Cheers >> Andrea >> >> -- >> -- >> Check the OTB FAQ at >> http://www.orfeo-toolbox.org/FAQ.html >> <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] >> <javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/otb-users?hl=en >> <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] <javascript:>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > -- > Manuel GRIZONNET > CNES - DCT/SI/AP - BPI 1219 > 18, avenue Edouard Belin > 31401 Toulouse Cedex 09 - France > Tel: +33 561 282 630 - 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] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout. -- Manuel GRIZONNET CNES - DCT/SI/AP - BPI 1219 18, avenue Edouard Belin 31401 Toulouse Cedex 09 - France Tel: +33 561 282 630 - 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/d/optout.
