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periz replied to the topic Unwrapping method in the forum Sarproz Forum 5 years, 2 months ago
* standard: usual standard unwrapping method, pixel by pixel, it suffers the usual drawbacks of unwrapping in presence of noise. If you mask an interferogram and you have disconnected areas, it’s not going to connect them.
* sparse LS: it uses sparse points and Least Squares to connect unconnected areas and to solve the problem in presence of…[Read more] -
periz replied to the topic use of Graph Analysis and Refinement in the forum Sarproz Forum 5 years, 2 months ago
With respect to question 3, the “previous points” you pointed to are points selected by e.g. Amplitude dispersion index in APS?
the GAR works with a graph previously processed by the APS. so “previous points” are the points that you import in GAR from the APS module
The points selected with star graph are PS points, and points selecte…
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periz replied to the topic Change Images Graph in the forum Sarproz Forum 5 years, 2 months ago
Hi Zoe,
theoretically, it should work. However, it’s not 100% tested, you might get some problems. If this happens, there is no need to redo all the job. You can just remove the images you want to discard from the dataset.txt file. Then it will work
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periz replied to the topic use of Graph Analysis and Refinement in the forum Sarproz Forum 5 years, 2 months ago
1. Does GAR always behave better than MISP? And do you recommend to use GAR in most cases?
the standard way APS+MISP is widely used and very robust. when APS+MISP is successful, you don’t need anything else. However, there are cases where it fails. In those cases, GAR can help
2.You mentioned GAR could detect strong movements which exceeds…
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periz replied to the topic east-west and up-down time series in the forum Sarproz Forum 5 years, 2 months ago
At the moment you can project the velocities using the Multi-Sensor module
Here a bit of description https://sarproz.com/manual/multi_sens.html
In the next future we will implement also the projected time series export
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periz replied to the topic use of Graph Analysis and Refinement in the forum Sarproz Forum 5 years, 3 months ago
1. What the “Skip init Mask” means? When should it be checked?
it means selecting all pixels, not loading the initial mask
https://sarproz.com/manual/set_mask.html
https://sarproz.com/manual/carica_maschera.htmlWhat the time series generated in this module is.
a time series object is a file that can be saved either in the APS module or in…[Read more]
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periz replied to the topic How to generate mean amplitude image in the forum Sarproz Forum 5 years, 3 months ago
The case of 2 sensors analysis is an advanced processing mode (as ERS and Envisat combination) that does not apply to your case.
You get only one reflectivity map per dataset.
If you are talking about combining different datasets (as ascending and descending tracks or different sensors) you can combine the geocoded (or orthorectified) maps in…[Read more] -
periz replied to the topic How to generate mean amplitude image in the forum Sarproz Forum 5 years, 3 months ago
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periz started the topic Atmospheric delay mitigation on single (or few) interferograms in the forum Sarproz Forum 5 years, 3 months ago
Dear all,
as mentioned in the Sarproz 2019.0 release post, you can now apply some operations to mitigate the atmospheric delay on single (or few) interferograms.
We published the operations to perform in this tutorial: https://www.sarproz.com/2019-tutorials/
Please read it carefully, in particular the note on the last slide: this exercise helps…[Read more] -
periz replied to the topic Change Detection error in the forum Sarproz Forum 5 years, 3 months ago
we cannot replicate the error, we need a remote session. write to support at sarproz dot com
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periz replied to the topic Change Detection error in the forum Sarproz Forum 5 years, 3 months ago
as specified in the forum rules https://www.sarproz.com/groups/sarproz-group/forum/topic/forum-general-rules/
please include log file and lasterror (zip them together) -
periz replied to the topic Sarproz Release 2019.0 in the forum Sarproz Forum 5 years, 3 months ago
Links will expire on April 6. After that, contact the admin to get an update
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periz replied to the topic Sarproz Release 2019.0 in the forum Sarproz Forum 5 years, 3 months ago
MAC USERS!!
A new MAC compiled version is out: https://we.tl/t-sRQKtKQetN
CAREFUL: this version was compiled with Matlab 2017a!! If you are a previous Sarproz user running the MAC compiled version, you need to install a new MCR version!! Check the readme.txt contained in the tar file above!
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periz replied to the topic Sarproz Release 2016.00 in the forum Sarproz Forum 5 years, 3 months ago
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periz started the topic Sarproz Release 2019.0 in the forum Sarproz Forum 5 years, 3 months ago
Dear Sarproz users,
in recent time we underwent many re-organizations, including worldwide locations, personnel, business model, servers implementation, processing core-functions.
One thing that is worth to mention here is the medium-term plan to set up a permanent SAR/InSAR training center in Italy (those interested in taking courses can start…[Read more] -
periz replied to the topic Radiometric Calibration in the forum Sarproz Forum 5 years, 3 months ago
no need.
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periz replied to the topic high negative values in the northern part of image in the forum Sarproz Forum 5 years, 3 months ago
You cannot use the small area processing for such a wide area.
Small area processing is suitable for areas where you can neglect the atmospheric delay (less than 1km for C band).
If the area is bigger, results are not reliable.
You could easily see that by checking the temporal coherence.
You need to take a course on the subject
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periz replied to the topic Processing Steps in the forum Sarproz Forum 5 years, 3 months ago
Please ask Joko in Indonesia to give you the last software version. He will contact you soon.
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periz replied to the topic geocoding shp which is slant range in the forum Sarproz Forum 5 years, 3 months ago
Sarproz ingests SAR data, DEM data, orbital data, and outputs a wide range of results in SAR and geographic coordinates.
It is totally indepedent, so that you can start with a SAR image and get a usable result, to be displayed in any GIS environment.
Also, Sarproz can import SAR data pre-processed with other software (check the manual for…[Read more] -
periz replied to the topic Master extraction error in the forum Sarproz Forum 5 years, 3 months ago
This is a segmentation violation, which means, your system is not stable and it is somehow conflicting with Matlab.
Some messages related to the audio drivers might indicate that the problem is there.
For what concerns Sarproz, if the audio drivers have issues, you should solve the problem by unchecking the “play audio” box in here…[Read more] - Load More