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Leica Photogrammetry Suite Working with Quick Bird Stereo data

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I. Photogrammetry Work Flow

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II. LPS Architecture

Add-On Modules LPS is scalable, so you can purchase only the tools you need to build your solution on top of the Core. The add-on modules provide additional production-oriented tools that help maximize data throughput. LPS Stereo brings you the power of extracting geospatial content in a stereo viewing environment. It features subpixel pointing, continuous roaming and zooming, as well as fast-graphics rendering. Viewing options include Stereo, Split Panel, Mono and Tri-View. Automatic Terrain Extraction (ATE) allows for fast, accurate automatic terrain extraction from multiple images using sophisticated techniques with built-in accuracy reporting. LPS Terrain Editor (TE) includes point, area and line-based terrain editing needed to clean DTMs using stereo imagery as a reference backdrop. TE also supports many DTM formats, including both TINs and GRIDs. PRO600 puts flexible, easy-to-learn CAD-based tools in your hands for large-scale digital mapping using stereo imagery, including signs, symbols, colors, line thickness, user-defined line-types and forms.

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Objective: Generating a block, triangulate, create DEM and generate Ortho Image using Digital Globe data.

Task 1:

1. Click the Create new block file icon . The Create New Block file dialog displays.

2. From the Create New Block file dialog, click the Goto button and navigate to the Outputs directory.

3. Type digitalglobe for the block file name, press Enter, then click OK. The Model Setup dialog displays.

4. From the Model Setup dialog, select Orbital Pushbroom / Rational Functions(based on your input) from the Geometric Model Category list, then for the Geometric Model, select QuickBird/Worldview, and click OK.

5. Click the Set button. The Projection Chooser dialog displays.

6. From the Standard tab, within the UTM WGS 84 North category, select the projection, and click OK.

7. Once the projection reference has been set, click OK. The block is created and is listed in the LPS Project Manager.

8. To save the block, select File | Save.

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Task 2:

You will now import some QuickBird/Worldview imagery into your new block file.

You will then create pyramid layers and import the sensor information into the project.

1. Click the Add frame to the list icon .

When the Image File Name dialog displays, navigate to the Digital globe directory, located within the LPS training data folder.

2. Open the Digital globe directory, and then open the scene_1 directory.

3. Change the Files of type setting to TIFF, then select QB_stereo1.tif then click OK.

4. Click the Add frame to the list icon again, and return to the Digital globe directory.

5. Open the scene_2 directory, and select QB_stereo2.tif, then click OK.

You should now see two listings in the CellArray, for these images. Now that the imagery has been added to the block file, we will attach the RPC file to the raster Digital globe image.

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Task 3:

To ensure that we have the correct exterior orientation data present, we need to attach the RPC files to the imagery.

1. In the CellArray, select Row # 1 to highlight the first image.

2. In the LPS Project Manager window, click the Show and edit frame properties

icon .

3. Ensure that the RPC Coefficients file is set to qb_stereo1.rpb.

4. Click the Next button.

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5. Ensure that the RPC Coefficients file is set to qb_stereo2.rpb.

6. Click OK in the QuickBird RPC Frame Editor dialog.

The correct orientation data has now been associated with each Digital globe image and the display window should refresh to show this.

Task 4: Importing GCPs & generating Tie points to a Digital globe Image Block:

Ground control points (GCPs) may be added to a Digital globe block file to strengthen the relationship between images by refining the rational polynomial model. However with RPC’s (Rational Polynomial Corrections) you do not have to have GCP’s for orthorectification.

1. Click the Start Point Measurement icon , then click the Set Horizontal

Reference icon .

2. From the list of GCP Reference Source options, enable the ASCII File (3D) radio button, then click OK.

3. Navigate to the Digital globe directory and select QuickBird-gcp.txt and click OK. The Reference Import Parameters dialog displays.

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4. Ensure that the Map Projection and Units are set as follows:

Projection: UTM

Spheroid: WGS 84

Zone Number: 13

Datum: WGS 84

Horizontal Units: Meters

5. Once the settings are verified as correct, click OK. The Import Options dialog displays. If an Attention dialog appears, then click Yes.

This dialog configures preferences for import of data into the LPS Point Measurement tool.

6. Since the QuickBird-gcp.txt is already in the default file format, simply click OK to import the data.

7. Measure any four active GCPs and place image points on their location.

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Now to generate Tie points………

8. Click the Automatic Tie Properties icon and make sure that the following parameters are set:

Images Used: All Available

Initial Type: Tie Points

Strategy Parameters: Avoid Shadow

Intended number of Points / Image: 25

9. Click OK in the Automatic Tie Point Generation Properties dialog.

8. Click the Perform Automatic Tie Generation icon . Tie Points will be generated on each of the images.

9. Check the Auto tie summary.

Task 5:

Having measured some Ground Control Points in the imagery, we now have the data necessary to further refine the RPC corrections.

1. In the Point Measurement window, click the Triangulation Properties icon .

2. Enable the Refinement With Polynomials checkbox, and set the Poly-nomial Order to 1, then click Run.

3. Review the Total Image RMSE value and ensure that it is at 1.0 pixels or less.

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4. When the RMSE is less than 1 pixel, click Accept, then click OK.

If the RMSE is above 1.0 pixels, you should review your placement of the GCPs to verify that they have been placed in the correct location. Click through the points in the CellArray and examine their location to ensure that they are situated in the same position for both images.

5. In the Point Measurement window, click Save, then click Close to return to the main Project Manager screen.

Task 6: Extract a DTM from a Digital globe Stereo Pair

We now have a block file with Digital globe imagery and their associated RPC files attached and are ready to extract a DTM.

1. From the icon menu, click the DTM Extraction icon . The DTM Extraction dialog displays.

2. Change the Output Form to Single DTM Mosaic.

3. In the text box for Output DTM File, type qb_denver_50meter, then press Enter.

4. Enable the Make Pixels Square checkbox, then in the DTM Cell Size input a value of 50 for X, then press Enter. You should see the Y value change to 50, which will create a DTM with a square elevation post spacing.

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5. Click the Advanced Properties button to open an expanded list of DTM extraction options. Choose the required options.

10. In the DTM Extraction dialog, click Run.

When the process completes, a DTM will have been created from the Digital globe imagery using an elevation post spacing of 50 meters.

Alternatively, if you need to add an external DEM/DTM ( which was generated from external sources…)

11. To add an external DTM to the file list in the LPS Project Manager window, click on the DTMs folder in the TreeView frame.

12. Click the Add frame to the list icon , and navigate to the appropriate folder.

13. Double-click on external_dem.img. The DTM is now available for use in this project.

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Task 7: Orthorectifying Digital globe Imagery

Now that the DTM has been extracted, we can use the elevation data to orthorec-tify the Digital globe imagery. We can also use the external DEM/DTMs to orthorectify the Digital globe data.

1. Click on the Images folder in the TreeView frame.

2. In the CellArray, highlight qb_stereo1.tif.

3. Click the Start ortho resampling process icon . The Ortho Resampling dialog displays.

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4. The DTM Source should be defined as DEM, and the DEM File Name should be set to qb_dem-10m.img.

5. In both the X and Y Output CellSize fields, input a value of 15, then press Enter.

6. In the Ortho Resampling window, click the Advanced tab, then enable the Ignore Value Checkbox and ensure that it is set to a value of 0.00000.

7. The Overlap Threshold should be set to 30.0% and the Resampling Method selected should be Bilinear Interpolation.

8. To add the second image to the file list, click the Add button.

9. In the Add Single Output window, click the pull-down arrow for Input File Name, and select qb_stereo2.tif, then enable the Use Current Cell Sizes checkbox.

10. Click OK to add this image to the list, then click OK in the Ortho Resampling window to begin the orthorectification of the two images.

If you have more images …..choose all and proceed further

11. When finished, click File | Save, then click File | Close.

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Objective: Use the LPS Mosaic PRO Tool to create a single mosaic image from multiple ortho image results

Task 1: Input Images into the Mosaic Tool

1. Click on the Images folder in the TreeView frame.

2. From the LPS icon panel, click the Mosaic icon .

3. Change the Mosaic method to MosaicPro and click OK.

4. Ensure that the DTM File radio button is selected.

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5. Select the appropriate DTM/DEM as the DTM File and click OK.

6. Click OK in the Add Images dialog.

7. Enable the Vis. cells for each of the images.

8. Click the Display raster images icon .

9. Click the Automatically Generate Seamlines icon .

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10. Enable Most Nadir seam line option and click OK.

11. Zoom in on one of the seamlines.

12. Click the Edit seams polygon icon .

13. Digitize a polygon around a portion of the seamline. See below. The side of the seamline from which the polygon originated is the one that will increase in size when the polygon is completed.

14. Move along the seamline and make any additional changes where necessary.

15. To remove color differences within and between the images, click the Display Color Correction Options icon.

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The Mosaic Image List has three Active images.

What does the X in the Ref. column mean? This image will be the master/reference image for color balancing and other process in mosaic.

16. To match the histograms of the overlapping areas, click the Display Color Correction Options icon .

17. Enable the checkbox for Use Histogram Matching then click the Set button.

18. Enable the checkbox for Use Histogram Matching.

19. Click the Set button for histogram Matching.

Choose Overlap areas for Matching method.

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20. Click on the Set Overlap Function icon .

21. The Intersection Type should be set to Cutline Exists.

22. Leave the Smoothing Options to the default of No Smoothing.

This will simply cut each image at the cutline, and join the two halves against each other.

23. Set the Feathering Options to the default of Feathering by distance, and type in the required buffer distance. Click Apply, then click Close.

21. Click the Output Options icon .

22. Set the Output Cell Size to the desired.

Click OK.

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23. The output method can be

a. Union of all outputs

b. User defined AOI

c. Shape file (polygon vector file) – this method can be used for tiling the mosaic in user defined sizes like 1SQKM X 1 SQKM.

d. ASCII file ..

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24. To run the mosaic, select Process | Run Mosaic.

25. Type denver_mosaicpro.img as the Output File name.

26. From the Output Options tab, enable the Stats Ignore Value: 0 checkbox, then click OK.

27. Display denver_mosaicpro.img in a Viewer.

28. Close the MosaicPro tool.

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Objective: Use the Image Interpreter tools to create Pan-sharpened images.

1. Click the Interpreter button in the IMAGINE/LPS toolbar.

The Image Interpreter dialog opens. 2. Choose Spatial Enhancement 3. Choose HPF Resolution Merge

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4. Click the open file icon, and select Quickbird_Pyramids_Pan.img for the High Resolution Input File. 5. Click the open file icon, and select Quickbird_Pyramids_MS.img for the Multispectral Input File. 6. Click the output open file icon, navigate to the directory where you want to store your merged image, and type the name of the new file. 7. Click OK when the button is highlighted and the Job State is Done. 8. Open a Viewer and display both Quickbird_Pyramids_MS.img and your new merged image. Make sure you click Clear Display in Raster Options to deselect it before adding each image. 9. Using the Swipe and Zoom tools, check the accuracy of the newly merged image.

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Objective: Use the Image Interpreter tools to create convert 16 bit data to 8 bit (“Rescale” option)

1. Click the Interpreter button in the IMAGINE/LPS toolbar.

The Image Interpreter dialog opens. 2. choose the Utilities .. 3. Choose Rescale option ..

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4. Click the open input file icon, and select Quickbird_MERGE_16 bit.img for the Input File. 5. Click the open output file icon, and select a new name for the 8 bit data - Quickbird_MERGE_8 bit.img for the output File. 6. In the data type : choose OUTPUT as unsigned 8 bit . 7. Check the Ignore value for Minimum calculation box. 8. Click OK when the button is highlighted and the Job State is Done.

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Leica Photogrammetry Suite Working with Cartosat Stereo data

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Working with Cartosat Stereo data

Objective: Generating a block, triangulate, create DEM and generate Ortho Images using cartosat data

Viewing the format of the data given by NRSA :

If you open the data CD you will find PRODUCT1 as folder and CDINFO as a file.

CDINFO contains information about the data CD and some information about the data given in the CD.

If you double click on the PRODUCT1 you will find many files.

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You will find one tif file, one meta data file and RPC files for BANDA.

You will find one tif file, one meta data file and RPC files for BANDF.

We will use the BANDA and BANDF, which is stereo data for working with LPS module to carryout triangulation, Generate automatic DEM and generate Ortho Images.

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Working with LPS

1. Click LPS icon from IMAGINE icon panel

2. Leica Photogrammetry Suite – Project Manager dialog box opens

3. To create Block file select File/New

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4. You will see Create New Block File dialog box

5. Input ddun_carto.blk under file name

6. Click OK

7. You will see Model Setup dialog box

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8. Under Geometric Model Category select Rational Functions

9. Under Geometric Model select IND High Res RPC

10. Click OK

11. You will see Block Property Setup dialog box

12. Click Set button under Horizontal

13. You will get the Projection Chooser dialog box.

14. See that projection is set to Geographic (lat/lon)/WGS84/WGS84.

Note: The Horizontal projection is set based on Control points X and Y

15. Click Cancel button to close the Projection Chooser dialog box.

16. See that Horizontal Units is set to Degrees

17. The Vertical Spheroid and Horizontal Spheroid are set to WGS84.

Note: The Vertical Spheriod and Datum is set based on Control points Z

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18. Click OK in Block Property Setup.

19. You will be back to Main LPS Project Manager with the name ddun_carto.blk.

20. From the menu bar select Edit/Add Frames or Add Frames to List icon

21. You will see Image File Name dialog box.

22. Browse to the directory where data is available.

23. Set Files of type to TIFF.

24. You will see to files BANDA.TIF and BANDF.TIF

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25. Select both the files by dragging your mouse and click OK.

26. You will find two records are added in the Image list.

27. Use LMB to click inside the box below Pyr. Or select Edit/Compute Pyramid Layers. Option

28. You will find Compute Pyramid Layers dialog box.

29. Select All Images without Pyramids option.

30. Click OK.

31. You will see the process of pyramid layers generation at the bottom of Project Manager.

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32. Once completed, the cells under Pyr is colored from red to green.

33. Now click on Show and edit frame properties icon

34. You will find IND High Res RPC Frame Editor(banda.tif) dialog box.

35. See that banda.tif is displayed under Image File Name

36. Under RPC Coefficients: see that banda_rpc_org.txt is displayed.

37. You will find the Min and Max elevation values.

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38. Click Next button.

39. You will see bandf.tif under Image File Name and bandf_rpc_org.txt under RPC Coefficients.

40. Click OK.

41. You are back to Project Manager Window.

You will find Int and Ext are turned into green color and Image foot prints are shown.

Now Go to PAgeNo.5 to the following topic:

Task 4: Importing GCPs & generating Tie points to a Digital globe Image Block:

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LPS Pro600 3D Feature collection

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Chapter 1

Getting started with PROLPS

Introduction to PROLPS Driver:

The PROLPS Driver from Leica Geosystems Geospatial Imaging is a software application that provides a direct link between the Leica Photogrammetry Suite and MicroStation V8 from Bentley Systems, Inc. The PROLPS Driver is a component of the PRO600 suite of applications for MicroStation V8.

About PROLPS

The PROLPS Driver provides a link to the Leica Photogrammetry Suite through its use of a stereo viewer window called the ViewPlex. Using this window, the PROLPS Driver provides an additional, 3D stereo view of imagery together with design file vector graphics, fully integrated within the MicroStation environment. The ViewPlex allows you to view stereo pairs of imagery that have been prepared using the Leica Photogrammetry Suite Project Manager. The PROLPS Driver opens the ViewPlex when you need it, usually when you start MicroStation together with the driver. The ViewPlex acts as a 3D digitizing device for any MicroStation application: PROLPS passes all 3D measurements you make in the stereo model to whichever tool is currently active within the MicroStation environment.

The PROLPS Driver may be used alone within MicroStation or it may be used together with the full PRO600 package from Leica Geosystems Geospatial Imaging. It may also be used together with other MicroStation-based applications created using any of the development tools provided by MicroStation V8.

About PRO600 PRO600 is an integrated suite of software applications from Leica Geosystems Geospatial Imaging, providing a rich variety of tools that optimize MicroStation for photogrammetric vector data collection and editing. Working closely with the PROLPS Driver, the core functionality of PRO600 is provided by the PROCART application. PROCART provides a project manager utility that lets you organize your MicroStation design files in a project-based manner. It optimises data collection through its feature code library where you can set up default definitions for the various features you will collect in the project, such as

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symbology and data collection mode. The fully integrated collection modes allow you to create complex features with ease. Sophisticated tools for building squaring and parallel line collection can increase productivity significantly. Finally, PROCART provides a number of data editing and visualisation tools that complement those of MicroStation and aid you in the creation of the finished product.

PRO600 also contains a number of other modules. The PROFKEY utility allows you to configure your system function keys in a hierarchical menu fashion for efficient interaction with MicroStation and the ViewPlex. Various data translator modules allow you to exchange data with other software applications and systems.

About MicroStation MicroStation is a generic computer-aided design (CAD) system. MicroStation is used in various industries, and has been popular within the mapping industry for many years due to its inherent ability to handle 3-dimensional data with ease. MicroStation manages a database of graphical elements, known the as design file, or DGN file for short. Commonly used graphical elements in mapping applications include:

• Lines

• Shapes

• Curves

• Arcs

• Symbols

• Text

Graphical elements may be divided into an unlimited number of design file levels, as a means to distinguish different feature types. For example, road features may be placed on a separate level than building features. Graphical elements may also be distinguished by means of their symbology: the colour, line width and line style. Graphical elements may be provided with additional meaning through the use of attribute linkages, such as the storage of feature codes.

MicroStation provides a rich variety of tools to collect, edit and visualise the design file data, using up to eight graphical views of the data. The views may be zoomed, panned and rotated to any orientation in space, to view the data at any level of detail and from any direction.

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How to open LPS Select Start\Programs\Leica Geosystems\Leica Phorogrammetry Suite \ Leica Photogrammetry Suite 9.0 from the window Taskbar.

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In Project Manager go to File\Open.(Block file window will open)

In look in select path i.e., C:\Training\Escondido\library\Escondido.blk

How to use PROLPS This section provides you with step-by-step instructions how to get started with the PROLPS Driver. It will explain how to start the driver, how to open the ViewPlex and load imagery, what configuration steps are necessary on first-time use, through to the point where you will be able to start collecting

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simple features in the 3D stereo environment provided by the driver and the integrated ViewPlex window.

Starting PROLPS The PRO600 product installation will configure your system such that the PROLPS Driver is started automatically during the initialisation of MicroStation. There are two ways in which you can start PRO600 and MicroStation: From the LPS Project Manager, or from the Windows Start menu.

Starting PRO600 from the LPS Project Manager

The following steps assume that you already have the LPS Project Manager running and that you have prepared an LPS block file containing oriented image pairs that may be viewed in stereo.

To start PRO600 from the LPS Project Manager Toolbar:

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1. Click the Start Feature Collection Application icon in the LPS Project Manager toolbar

2. In the Feature Collection Application window, select PRO600 for LPS from the dropdown list

3. Click the OK button. MicroStation will now start up.

When you start PRO600, the first window you will see is the PRO600 Project Manager. In the Files list you see all the projects which are in the folders shown in the Directories list.

You use this window to select and open the project with which you wish to work, or to create a new project.

Create a new project If you want to create a new project , select the New button in the PRO600 Project Manager. This will open the New PRO600 Project window.

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1. Select the directory where you want to create the new project i.e., C:\Training\Escondido\library

2. Enter the new name into the box underneath the label files. Escondido.prj

3. Click on select button then project seed file window will open in this you have to select mm1000s.prj

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4. Click OK button.

5. PRO600 Project file is created.

Project file defination The project file is an ASCII file. It is defined by a name, an extension and a directory. PROCART pre difines the extension .prj for its project files. Although a different extension may be used if you so wish, it is recommended that you u do not change the default extension

Modifying projects After creating a new Poject, or when you open an existing

And opening the project, the PRO600 project window is opened

Design file

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• Project parameters Mapping scale and other parameters that defines the project.

• Initial view Controls how the microstation graphic view is set up on opening a design file.

• Stream parameters Parameters that control the collection of data in stream mode.

• Tolerances tolerance values used by various PROCART tools.

• Project files The libraries that define the symbology of the project, and the design seed file for creating new design file.

• DGN files The design file that belong to the project.

Create a Design file Click on Add/Remove file button, Select the directory where you want to create the new design file i.e., C:\Training\Escondido\dgn

1. Select the directory where you want to create the new design file i.e., C:\Training\Escondido\dgn

2. Enter the new name into the box underneath the lable files.

Escondido.dgn and press enter key for two times.

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3. click on Add button, and click on Done bottom.

4. Then the dgn file add to the DGN files in PRO600 project window.

5. Click on Open DGN File button.

After click on Open DGN File Button, it will open the viewplex and procart work space (Microstation)

Image Pairs: Drag and drop the Image Pair you want to work with onto the main Viewplex view pane. As you drag the image pair into a specific view, the letters LR appear beside the cursor. This indicates that the images are being loaded as a left/right pair

Image pairs Procart

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Stereo pair will be loaded

Now its ready to Extract the Features from stereo pair.

Digitization of Road feature Select PAVED ROAD feature in Library catalog.

Start digitizing the road feature(Line Mode) as per the stereo view as shown below

Library

Catalog

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Digitization of Buildings Select HOUSE feature in Library catolog.

Start digitizing the Buildings (Shape Mode) on roof tops by viewing stereo pair as shown below

Placing a Cell or Symbol Select Light Pole feature in Library catalog.

Start placing the Light Pole symbol at foot of the light pole by viewing stereo pair as shown below

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Digitization of Hydro Select Lake feature in Library catalog.

Feature Start digitizing the Lake feature on top of the water level by viewing stereo pair as shown below.

Digitization of Breaklines Select Breakline feature form Library catalog.

Start digitizing the breakline as per the terrain follows by viewing the stereo pair as shown below.

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PRODTM : PRODTM is a core member of Leica Geosystems GIS & Mapping’s PRO600 family of Microstation application for Photogrammetic data collection and editing. PRODTM is able to perform many operations on terrain datasets and files in the formats used by both the Leica Photogrammety Suit (LPS) and by the SOCET SET digital photogrammetric software from BAE SYSTEMS. It has also been designed to interact very closely with TERRA MODELER terrain modeling. Software from Terrasolid Ltd of Helsinki, Finland.

PRODTM provides different functionality depending on what other software components are installed on your system. PRODTM will automatically detect the configuration of your system and enable only the capabilities that are currently available.

Using PRODTM with Leica Photogrammetry suit

First you have to digitize a the area of interest for DTM collection (Polygon), as shown below.

1. Select the polygon (aoi) in dgn by using selector tool from MAINTOOL bar in Microstation.

2. Go to MENU BAR Click on PRO600 \Export\Coordinates

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3. After clicking on Export coordinates,PRO600 Export Coordinates Window will open.

4. Click File Button and give the name as Escondido.dat.in a selected path i.e., C:\Training\Escondido\Escondido.dat then click on OK Button window will close.

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5. Go to PRO600 Export Coordinates window click on Export button file will be exported to Escondido.dat close the window.

6. GO to ERDAS IMAGINE 9.0 Menu Click on DATA PREPARATION.

.

Click on

Create

Surface

3d

Surfacing

window

Will open

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7. Click on File\Read.

8. Point Data should be on

9. Select Source File Type as ASCII File.

10.Go to Source File Name as C:\Training\Escondido\Escondido.dat, Click on OK button. Import Options window will open

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11. Select Separator Character as White Space and Row Terminator Character as Return New Line [DOS].

12. If you want to see the Input Preview click on Input Preview on top.

13. Click on OK button.

14. Then the coordinates will be imported. Coordinates will be displayed in 3D Surfacing window.

15. Go to Surface\Surfacing, Surfacing window will open.

16. Here you can create a MASS POINT GRID as *.img format i.e., X,Y grid.

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17. In Output File select the path C:\Training\Escondido and type the output file name as escondido.img.

18 .Select Linear Rubber Sheeting in Surfacing Method.

19 . In Output Information enter the value of Cell Size X as 50, Cell Size Y as 50.

20. Make Cells squares should be ON.

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21. In Output Corners the values of ULX, ULY AND LRX, LRY will be displayed automatically.

22. Background value should be zero, Ignore Zero In Output Stats should be ON and Float Single should be selected in Output Data Type.

23. Then click on OK button.

24. Surfacing will be completed. Go to 3D Surfacing window select file\Save As. Save As window will open.

25 . Select Terramodel TIN in Output File Type.

26 Select the path C:\Training\Escondido and enter the name as escondido.pro in Save Output Coordinates As [*.pro].

Click OK button.

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27 . Surface saved as Terramodel TIN. Close the 3D Surfacing window.

How to Load PRODTM.

1. Go to Microstation Menu bar .

2. Select PRO600\Modules\Load PRODTM. PRODTM window will open.

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1. Click on File\Open, go to path i.e., C:\Training\Escondido\Escondido.img click OK button. Escondido.img will be loaded as Dataset.

2. Go to File click on Import\Display window will open.

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3. Select

Import as……….Points

Import type……. Display only

Vertical Scale…..1.00

Relative to………Ground Zero

Then click on Import button.

4. Then the grid will be display in Design file as per the setting given in escondido.img here the Grid spacing is 50 X 50

How to measure the Grid

Again go to PRODTM menu click on File\measure

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In Terrain Measure Files Select.

Measurement Mode………………………..Manual

Measure all…………………………………Pints in boundary

Measurement profiles in……………………Alternate directions

Pre-positioning………………………………Previous point

Pre-positioning bias………………………….0.00

Then click on Advanced button, Advanced window will open

Measure

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Skipping a point……………………………Eliminate point.

Click on OK button.

In Data collection Command should be collect feature 124.

Then Click on Start button measure ment process will start.

Cursor will move automatically in X and Y direction, Z reading (Height) will be measured manually,

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For Skipping the Mass point press the Topo mouse Reset button and for register the next Mass point press the Topo mouse Accept button.

In this way you can measure the Mass point Grid.

Completed Mass point Grid as shown below.

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After measuring all Mass point Information Dialog box will open.

Then Click on OK button.

How to MERGE the vector data to the Terramodel TIN to generate the contour map.

1. Go to PRODTM menu click on File\Open. Select path as C:\Training\Escondido\Escondido.pro

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2. Click OK button, Terrain Dataset will be loaded i.e., escondido.pro

3. Again go to PRODTM menu click on File\Merge.

4. In Display Options Select Codes in design file in List.

5. In Merge Tool Assignments. Select the Mass point Feature.

6. Click on Start button.

Minimize the Merge LPS Terrain Dataset window. Go to PRODTM Menu bar Click on File\Import/displayed.

Merge LPS Terrain

Dataset window will

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7. In Import LPS Terrain Dataset

Import parameters

Import as……………………Contour.

CONTOUR SETTINGS

After setting contour parameters click on Close button.

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8. Go to Import LPS Terrain Dataset

Import Type…………………Display only

Vertical scale………………..1.00

Relative to…………………... ground zero

Then click on Import button.

Contour will be Displayed in design file only because we imported contour as display only if you select contour as write to the file , it will write the contour to the design file then you can view the contour in both VIEWPLEX and PROCART.

Here contour is Generated With the Mass point data so the contour is passing through the waterbody. To get more accurate you can Merge the Features like Roads, Water bodies (Hydro Features), Breaklines etc., after merging all ground Related Features we will get good accuracy of contour map.