Changes between Version 67 and Version 68 of WikiStart

Timestamp:

Oct 5, 2017, 10:43:13 AM (7 years ago)

Author:

steiger5na

Comment:

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WikiStart

@@ -190 +190 @@
 
  1. '''Copy the files from the computer of the cameras'''. [[BR]]- The images from the vertical camera are saved on the local computer in G: and have to be copied into the folder FALCON in the corresponding experiment. [[BR]]- The images from ''PCO1'' (camera at the inflow) are saved on D: of the remote desktop connection that ends with ''151''. The images have the be copied into the folder ''PCO1'' of the corresponding experiment.[[BR]]- The images from ''PCO2'' (camera above the trough) are saved on D: of the remote desktop connection that ends with ''150''. The images have to be copied into the folder ''PCO2'' of the corresponding experiment.
- 1. '''Get the .xml file with timing information'''[[BR]]In uvmat select the Run>field series then open>browse and select an experiment. Go in the folder within the FALCON and select the ''.seq'' file. Choose ''extract_rdvision_times'' in the Action part, click on Input and Run. This will create a ''Falcon.xml ''within the FALCON folder.
+ 1. '''Get the .xml file with timing information'''[[BR]]In uvmat select the Run>field series then open>browse and select an experiment. Go in the folder within the FALCON and select the ''.seq'' file. Choose ''extract_rdvision_times'' in the Action part, click on Input and Run. This will create a ''Falcon.xml ''within the FALCON folder. '''Check that the Falcon.xml file contains the right information on Dti (time between two images), Exposure time and Number of images (!NbDti)! '''
  1. '''Convert .tif into .png[[BR]]'''In Run>Field series you can open any ''.tif'' of the desired folder (Warning : you should not take the im.tif but any im@XXXX.tif is working). Then in the ''Action'' part you should select ''extract_multitif'', if the Input button is in pink you should click on it and give to the software the'' Falcon.xml'' that you extracted earlier (If that doesn't exist, copy one ''.xml'' file from a previous experiment and change the seting manually. Once it is done you can click on RUN, don't forget to select ''cluster_oar'' in the run mode, the action will be much faster. When it is done a new folder called PCOY.png is created in your EXPXX folder and contains all the png. [[BR]]For''' SCANS''': Check that the right number of slices is registered! To do so, click on ''check_data_files'' in the'' Action'' part and type the right number of slices in ''nb_slices i''
  1. '''Remove background'''[[BR]]Browse for the right experiment again and chose the extracted ''.png'' images. The action ''sub_background'' that will remove all the motionless structures.  For the input you have to make sure that the ''image rescaling coefficient'' is equal to 2 and then make is run. (This process takes a long time, don't forget to make it run on the cluster). You can check on ''Status'', how many images are done. The output of this action is a file PCOY.png.sback filed with png images.[[BR]]For''' SCANS: '''Here, the ''image rescaling coefficient'' should be equal to 0! Also, set the ''Number of images for sliding background'' to the number of images per slice!
  1. '''Do PIV[[BR]]'''Browse for the images with the removed background''' '''(PCOY.png.sback.). Choose the Action ''civ_series''. For in Input, you have to import an existing .xml file to get the right parameters. You can use one .xml file from another experiment on which the piv is already done. Browse for: EXPXX/PCOY.png.sback.civ/0_XML and choose any of the img_#.xml. Make sure in the Input parameters that you chose the correct mask (right camera and with/without corner).
  1. '''Add calibration grid[[BR]]'''To get all images in cm relative to our coordinate system, the calibration we did in the beginning has to be applied on all experiments. This can be done in the very end.
+
+'''Important to do during PIV processing:'''
+
+ * Check that the Falcon.xml file contains the right information on Dti, Exposure Time and !NbDti!
+ * Check that all files are processed before you continue!
+ * If there is a message about the wrong number of i before starting the civ_series, then the NbDti in the Falcon.xml is wrong and you have to change it!
+ * Before pressing the RUN button always double check that it is actually analysing all images (the values in first and last in the middle section).
+ * If you are analysing scans and slices, always check that you have the right number of slices.
 
 = 6 - Organization of data files =