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Quick Start with AeroSys-AT. Step by Step Tutorial. Step 1: Gather Data Files. Refined Photocoordinate Data File(s) Export to PAT-B format, *.ptb Refined for radial lens distortion and fiducials No interior (fiducial) points listed, only relative points Units in Millimeters

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Quick start with aerosys at

Quick Start with AeroSys-AT

Step by Step Tutorial


Step 1 gather data files
Step 1: Gather Data Files

  • Refined Photocoordinate Data File(s)

    • Export to PAT-B format, *.ptb

      • Refined for radial lens distortion and fiducials

      • No interior (fiducial) points listed, only relative points

      • Units in Millimeters

  • Ground Control Data File

    • AeroSys native format, *.CTL

    • ptID, X, Y, Z, Sxy, Sz


  • Sample pat b format
    Sample PAT-B format

    168001 152.000

    681097 -1.306 -91.717

    682097 0.081 -46.604

    683097 0.306 0.057

    683107 92.735 2.407

    685056 -0.183 97.547

    685066 -0.387 88.344

    685076 47.049 92.719

    685086 47.190 87.721

    685096 99.749 100.458

    685106 97.316 82.737

    695056 64.026 -77.335

    695066 63.746 -87.991

    695076 90.639 -79.120

    695086 88.551 -87.953

    681091 30.451 -105.108

    683091 -1.878 -0.091

    -99


    Sample aerosys ctl format
    Sample AeroSys *.CTL format

    CTL

    Project: City of Saint Paul, MN

    661051 316094.710 425151.530 1525.442 0.0100 0.0100

    661071 324300.000 425188.260 1639.058 0.0100 0.0100

    661151 333170.630 424863.340 1597.493 0.0100 0.0100

    661201 342692.270 424777.720 1411.468 0.0100 0.0100

    661251 350446.650 425413.140 1197.069 0.0100 0.0100

    663051 316598.870 426671.720 1489.140 0.0100 0.0100

    663071 324561.840 426815.000 1518.809 0.0100 0.0100

    663151 333384.500 426727.470 1515.782 0.0100 0.0100

    663201 342406.710 426593.300 1361.070 0.0100 0.0100

    663251 351001.900 427304.920 1251.495 0.0100 0.0100

    665051 316816.330 428914.560 1459.911 0.0100 0.0100

    665071 324559.250 428680.220 1413.010 0.0100 0.0100

    -99

    -99



    Step 2 start aerosys at
    Step 2: Start AeroSys-AT

    • Start AeroSys-AT main menu GUI

      • Click on the desktop shortcut icon

  • Main Menu Appears


  • Step 3 make aerosys at project
    Step 3: Make AeroSys-AT Project

    • On Main Menu GUI

      • Click to 1st (left most) icon button

  • Project Set-up GUI appears

    • Purpose(s):

      • Set project “BASENAME” & “Data Directory”

      • Translate photocoordinate data file(s) to *.REF format



  • Make a new project
    Make a new project ….

    • Select File | New


    Choose new project name
    Choose New Project Name

    • From File Choice Dialog …

      • Traverse to Data Directory

        • Enter New Project Name

        • e.g., BoreSite16Q12.prj

    • Click “Open” Button

      to create new project



    So far
    So far …..

    • The Project Basename has been set

      • i.e., BoreSite16Q12

  • The Project Data Directory has been set

    • i.e., E:\mapping\AeroMap\16Q275AT\

  • Now enter some text to Identify your project in the “Title” text box


  • Select ground control file
    Select Ground Control File

    • Click on the “yellow” No.2 button

    • Select the AeroSys native formatted

      *.CTL data file

    • Click “Open” button



    Set the photocoordinate type
    Set the photocoordinate type …

    • Click on the “Photocoordinate Type” tab

    • Select Attributes

      • Format: e.g., PAT-B

      • Processing: Raw vs. Refined

      • Parsing: Paired vs. Un-Paired


    Is camera info in data base
    Is Camera Info in Data Base?

    • Is this block using a “New” camera, i.e., one that is not in your local AeroSys-AT camera data base?

    • If YES, then click on the tab labelled

      “Camera Data base”


    Adding a new camera
    Adding a new Camera ….

    • Click on the blue arrow icon to add a new camera to the data base … Camera Editor GUI appears


    Add the new camera info
    Add the new camera Info

    • Click on the “New” button to put the gui into editor mode


    Enter camera info
    Enter Camera Info ….

    • Type in the camera calibration info into the GUI

      Or

    • Click on the “yellow” file open icon to import an existing *.CAL data file

    • Click the “Done” button to enter the camera

    • Click the “Select_OK” button to finish


    Enter block info
    Enter Block info

    • Click on the Block Configuration tab


    Select number of cameras
    Select Number of Cameras …

    • If one camera …

    • If more than one …

    • To add more cameras to the list, select the camera name in the drop-down combo and then click the “green” plus icon button


    Select your pat b data file
    Select your PAT-B data file

    • Click on the “all-in-1-file” choice button

    • Click the green plus icon to select the *.ptb file


    Pre check the block contents
    Pre-Check the block contents …

    • Click on the green check button to pre-parse the *.ptb file to check its contents


    Transfer block info to gui
    Transfer Block Info to GUI …

    • Click on the green up-arrow button

    • Click on the “Save” project Button


    Time saving step
    Time Saving Step ….

    • Click on the “export” button to parse the *.ptb file into the native AeroSys-AT file formats: *.REF & *.CAL


    So far2
    So far …

    • We have set up :

      • Project basename

      • Project Data Directory

      • Project Ground Control file

      • Selected a camera for the block

      • Translated *.ptb to *.ref & *.cal

  • Now we are ready to start the bundle Pre-Processing steps …


  • Aerosys at pre processing
    AeroSys-AT Pre-processing …

    • Steps to make the *.AER input file for the Aero.exe bundle adjustment program

      • Relative Orientation

      • Strip Formation

      • Block Formation

      • Estimate Ground Coordinates

      • Photo Resection

      • Point Intersection

      • Merge

      • Pre-bundle Image Rays gross error check


    Step 4 relative orientation
    Step 4: Relative Orientation

    • Click on the 9th tool bar icon button from the left



    Pre processing gui details
    Pre-Processing GUI details …

    • Action Buttons …

    • Go, start current pre-processing step

    • Next, move to next pre-processing step

    • Skip, skip over current pre-processing step

    • Back, go back to previous pre-processing step


    Pre processing gui details1
    Pre-Processing GUI details …

    • Tabs, non-functional … only for visual reference


    Pre processing gui details2
    Pre-Processing GUI details …

    • Quick Summary text box

      • Stats output for each pre-processing step


    Pre processing gui details3
    Pre-Processing GUI details …

    • Status Info

    • Current Status: Idle, Processing, Done, Error

    • Progress Bar

    • Pre-processing step


    Pre processing gui details4
    Pre-Processing GUI details …

    • Message Text Box

      • Internal processing messages


    Pre processing gui details5
    Pre-Processing GUI details …

    • Options Box

      • Processing options for each step


    Let s go on
    Let’s go on …

    • Click the “Go” button to start the Relative Orientation

    • Quick Summary

      STRIP Model L_Photo R_Photo RMS_Vx (µm) RMS_Vy (µm)

      ----- ----- ------- ------- ----------- -----------

      1 1 101 102 0.0 0.5

      1 2 102 103 0.1 3.0

      1 3 103 104 0.1 1.0

      ----- ----- ------- ------- ----------- -----------

      2 1 201 202 0.0 0.3

      2 2 202 203 0.0 0.4

      2 3 203 204 0.0 0.5

      ----- ----- ------- ------- ----------- -----------


    Is relorn ok
    Is RELORN ok?

    • What each independent model to solve as “squeaky-clean” as possible

    • RMS_Vx, direction of overlap 0.0 to 0.1 microns

    • RMS_Vy, parallax <= 3.0 in general

      • Threshold is function of scanning size

  • Click the “Next” button to go onto next step


  • Step 4 strip formation
    Step 4: Strip Formation

    • Click on the “Go” button

    • Quick Summary

      STRIP Model RMS_Vx (µm) RMS_Vy (µm) RMS_Vz (µm)

      ----- ----- ----------- ----------- -----------

      Next 1 xxx.x xxx.x xxx.x

      1 2 2.4 39.0 44.5

      1 3 0.9 22.5 27.3

      ----- ----- ----------- ----------- -----------

      Next 1 xxx.x xxx.x xxx.x

      2 2 0.9 15.7 18.6

      2 3 0.5 32.3 31.9

      ----- ----- ----------- ----------- -----------

    • Don’t sweat the residuals, just want the models to join into strips

    • Click the “next” button to go on …


    Step 5 block formation
    Step 5: Block Formation

    • Click on the “Go” button

    • Quick Summary

      STRIP RMS_Vx (µm) RMS_Vy (µm) RMS_Vz (µm)

      ----- ----------- ----------- -----------

      1 xxx.x xxx.x xxx.x

      2 15.2 22.7 34.8

      ----- ----------- ----------- -----------

    • Don’t sweat the residuals, just want the strips to join into a block

    • Click the “next” button to go on …


    Step 6 estimate ground coordinates
    Step 6: Estimate Ground Coordinates

    • Click on the “Go” button

    • Two processing Choices:

      • Polynomial Strip Adjustment

        • Need lot’s of ground control in each and every flight strip

    • Hybrid Rigid Body 2D-3D trans

      • Used in AB-GPS blocks where some flight strips do not have any ground control points in them



    Estimate quick summary
    Estimate Quick Summary

    • Using the Polynomial … each strip

      STRIP RMS_Vx (µm) RMS_Vy (µm) RMS_Vz (µm) Source

      ----- ----------- ----------- ----------- ------

      1 0.219 0.250 0.248 POLY

      2 0.233 0.182 0.060 POLY

      ----- ----------- ----------- ----------- ------

    • Using the Hybrid … on the whole block

      STRIP RMS_Vx (µm) RMS_Vy (µm) RMS_Vz (µm) Source

      ----- ----------- ----------- ----------- ------

      1 0.137 0.097 0.362 3D-2D

      ----- ----------- ----------- ----------- ------


    Step 7 photo space resection
    Step 7: Photo (Space) Resection

    • Click on the “Go” button

    • Quick Summary

      STRIP Photo_ID RMS_Vx (µm) RMS_Vy (µm)

      ----- -------- ----------- -----------

      1 101 12.3 14.1

      1 102 14.0 12.9

      1 103 11.7 9.4

      1 104 6.0 7.9

      ----- -------- ----------- -----------

      2 201 13.8 14.5

      2 202 12.9 12.7

      2 203 15.1 13.4

      2 204 12.2 15.0

      ----- -------- ----------- -----------

    • Don’t sweat the residuals, just want the photos to solve

    • Click the “next” button to go on …


    Step 8 point space intersection
    Step 8: Point (Space) Intersection

    • Click on the “Go” button

    • Quick Summary

      Searching for additional model points....

      Done searching strip no.1

      Done searching strip no.2

      Sorry, No additional model points were found!

    • Don’t sweat the residuals, just want the points to solve

    • Click the “next” button to go on …


    Step 9 merge
    Step 9: Merge

    • Click on the “Go” button

    • Merges text output file from previous steps into a text input file for the Aero.exe bundle adjustment program

    • Click the “next” button to go on …


    Step 10 image rays
    Step 10: Image Rays

    • Click on the “Go” button

    • Check input data for gross errors by performing a space intersection on all points listed in the *.AER data file

    • Sometime residuals can look funky if pre-processing estimates are a little rough

      • Take note and go on to bundle adjustment


    Step 11 aero bundle adjustment
    Step 11: Aero Bundle Adjustment

    • Click on the “Go” button

    • Main menu for Aero.exe appears

    • Processing is auto-started

      • Processing dialog

      • Quick Summary Dialog

        • Evaluate bundle results






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