periz

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  • in reply to: Import .mat files for coregistration #8498
    periz
    Keymaster

      Hi Vitaliano,
      the format of the images is not a big problem, you just need to write/read them using a couple of scripts that we can pass you. Some more care should be paid with the meta data, though.
      I believe the most effective way to deal with your case is to talk about it in a call.
      If good for you, please write an email to admin at sarproz dot com and we try to find a slot in these days
      best

      periz
      Keymaster

        Thank you Tome
        if you send the files to support at sarproz dot com we can create a web link and post it here
        best

        periz
        Keymaster

          Hi,
          yes, of course, you can export SMALL AREA result in Google Earth
          you do it from the geocoding module
          check here https://sarproz.com/manual/geocod.html if you click on the menu of export options, beside the csv you have also jpegs and various kml formats. kml/kmz are Google Earth formats
          best

          in reply to: Possible error in debursts #8406
          periz
          Keymaster

            the rar file was not uploaded either
            13 images for a time series analysis is too limited, use at least 30 images
            I suggest you write to support at sarproz dot com to better check the details
            then we’ll post here the outcome of the investigation
            best

            in reply to: Possible error in debursts #8399
            periz
            Keymaster

              The log file was not uploaded, try zipping log files in the future
              from the inputpar file we see anyway that you are using an old Sarproz version
              soon we’ll post here in the forum instructions to download Sarproz compiled with matlab 2022a
              try again later with the new version
              if issues perists, we’ll start investigating the log file
              in the meanwhile, you can check images (searching for issues in the amplitude) and interferograms (to check possible phase jumps).
              also, it’s useful to see the images graph to have an idea of your dataset
              best

              in reply to: Displacement linear graph not displaying in Google Earth #8321
              periz
              Keymaster

                Please zoom in and keep clicking on points
                you will see the time series
                the point you picked up is just for visualizing the general picture from the distance, it’s not a real target
                best

                in reply to: Questions about Images Incidence Matrix #8307
                periz
                Keymaster

                  For some reasons we never noticed this post, sorry.
                  The variable you are mentioning it the Incidence Matrix of the graph (or network) connecting the images of your site/project. The graph is basically the way in which “interferometrically” connect the images you have. There are many ways to connect your images: you can use the star graph (with one image at the center, the Master), or the full graph (each image is connected to all others) and so on. You can find a list of options in the dataset selection panel.
                  Regarding the sign of interferograms (image A – image B or viceversa) please read this https://sarproz.com/manual/save_interfs.html
                  This is topic thoroughly treated in the course.
                  Best

                  in reply to: curvy edge of orthorectified image #8271
                  periz
                  Keymaster

                    exactly

                    in reply to: Data import #8240
                    periz
                    Keymaster

                      Hi, depending on the way in which you unzip your data, your data can be extracted in subfolders, masking the contents in a way that the software does not recognize them.
                      The standard way Sarproz recognizes sentinel data is, if the SLC folder contains directories called S1A_* … .SAFE or S1B_* … .SAFE
                      best

                      in reply to: Sentinel 1 IW SLC Product Reprojection #8216
                      periz
                      Keymaster

                        No. You can do the reprojection yourself once you get the final output from Sarproz
                        best

                        periz
                        Keymaster

                          it surely makes sense to consider the temporal coherence of a point
                          but not for estimating height and/or velocity
                          the temporal coherence is used e.g. to weight the spatial integration of the APS graph
                          best

                          periz
                          Keymaster

                            hi

                            * Sarproz gives explicit messages about the options that are taken. if you read messages carefully, you should be able to understand whether interferograms are read, whether flattening is assumed and so on
                            * in any case, if you apply a standard processing, the phase is read from images and the flat terrain phase is removed afterward. you can choose whether to remove the DEM or not and whether to estimate a residual height or not
                            * phase is read from interferograms only if you choose to use the coherence as a weight. in such case, the software assumes that inteferograms are flattened and that the external DEM was removed
                            * if no interferograms are available, the phase is taken from images, flat terrain and external DEM as subtracted automatically.

                            + in your case, if you want the software to read your custom processed phase, star graph, generate star graph interferograms, choose to weight data with the coherence
                            + if you do not want to use a weight in the processing, just set the coherence equal to 1 (it’s the amplitude of interferograms)
                            + about naming policies, check here: https://sarproz.com/manual/save_interfs.html

                            best

                            in reply to: sparse point processing using a few images #8199
                            periz
                            Keymaster

                              you are not fitting a single line. you are fitting a planar surface (height and velocity).
                              with 4 images you can look at 3 interferograms. or you can calculate the average if in your particular case it makes sense. or you can neglect height and atmosphere if you are in the proper situation and assume that the phase content is just movement.
                              in general, just calculate interferograms and check them.
                              best

                              in reply to: Including Corner Reflectors into Multi Image Processing #8194
                              periz
                              Keymaster

                                hi

                                * if you want to cherry pick only a few pixels of interest, you can use this module: https://sarproz.com/manual/kml2mask.html to generate your own mask of pixels, eg by importing a simple list of geographic coordinates

                                * if you want display data (like amplitude or coherence) of cherry picked pixels, you can use this module (visualization tools): https://sarproz.com/manual/class_sito.html

                                * if you want to process and analyze amplitude time series data (eg to detect temporary scatterers) you can use this module: https://sarproz.com/manual/amp_series_proc.html

                                all these topics are discussed in the Sarproz training course
                                best

                                in reply to: Scatter Plot #8077
                                periz
                                Keymaster

                                  Hi Mahtab,
                                  saving a selection of points does not mean saving the plot you are diplaying
                                  when you save a selection of points, you save a 2d vector, where the 2 dimensions are sample and lines, independently from what you have on x and y axes in the scatter plot
                                  the only choice you have is whether to save a color or not, as indicated here https://sarproz.com/manual/xplot_save.html
                                  if later you want to display/export latitude and longitude, simply load the desired selection of points and then choose lat/lon on the x/y axes
                                  best

                                Viewing 15 posts - 1 through 15 (of 757 total)