Getting started with metigo 3D

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This article is at present under revision. Please come back in due course! .
Susanne Geck 10:44, 29 September 2016 (CEST)

These guidelines gives you a short and comprehensive introduction to the standard metigo® 3D approach, which starts with capturing and treating images, continues with generating point clouds and ends with the creation of true-to-scale orthophotos. Links direct you to dedicated articles with further information about the specific subject.

Create a project

3D NewProject en.png

Using the menu Project > New Project > New or the button IconProject New.png on the symbol bar a new project is created.

  1. Enter a project name in the prompted dialogue.
  2. Enter the project settings for image export
  3. and point cloud generation.
  4. Confirm the settings by pressing OK.

For further information see Project Management (metigo 3D)

Create a camera

Following you create a camera for your new project respectively load a prevoiously created one. To create a camera right-click on the node cameras of the tree orientations at the project tree on the left side of the GUI. Select Create Camera from the context menu.

3D CreateCamera en.png
  1. Enter the general camera data.
  2. Enter the data for interior orientation.
  3. Enter the parameters of you CCD-Camera to establish the image coordinate system
  4. Enter the distortion parameter.
  5. Press on Apply

For detailed information see Camera.

Load images

3D LoadSourceImg en.png

To load images rightt-click on the node source images of the tree Orientations on the left and select Load Source Images.

  1. Select images.
  2. Drag'n'Drop images from the central section of the dialogue to the right section and assign them here to a camera.
  3. Press Apply.

For further information see Source Images (metigo 3D)

Stereo Projects

Image Groups

To create image groups open the context menu of the node source images of the tree Orientations on the left and select Generate Image Groups.... Generating these image groups, models will be created automatically.

  1. Mark the images you want to include into the image group and right-click to open the context menu. Select here Generate Image Groups....
  2. Confirm the selected settings by pressing the button Start.

Name the image group in the prompted dialogue and confirm with OK. If the automatic creation does not start you can create the stereo models manually. For further information compare Stereo Project.

Analysing the model

Right-click on the created image group at the orientation tree and press Model Analysis.

The prompted dialogue suggests a sequence of models so that the absolute orientation only has to be calculated manually for the first stereo model (compare Absolute Orientation). The calculated orientation will then be transferred automatically to the other models. However the overlap of the models to each other has to be sufficient. For the first model you still have to measure GCPs in both images and recalculate the relative orientation for the selected model where required.

  1. Suggested sequence for model processing

Relative Orientation

After you have chosen the start model right click on the respective image group in the Orientation tree and select Orientate all models relatively. The settings (base and filtering) will be applied from the tool window on the right. You also can orientate every model individually.

  1. After calculating the GCPs click Calculate.

See Relative Orientation for more details.

Absolute Orientation

After the relative orientation has been conducted successfully press the button ##.

Calculate the absolute orientation of the selected with the given GCPs. If this are not yet existing load 3D-GCPs into the project (compare GCP).

--> After you have calculated the orientation for the first model, you can assign this to the other models of this group automatically (assumed that sufficient overlap of the models exists). Therefore call the context menu and click on Orientate all Models automatically.

See Absolute Orientation for more details.

Save orientated models

After you have orientated your models successfully save them by clicking at the right part of your window on Save Model. You can also save all models at once by selecting save all orientated models in the context menu.

Please, read Point Cloud Generation for further information.

Point Clouds

Start the Point Cloud Generation

Define an increment in the right part of your window. By inserting the seed cluster to a batch list you can create for all selected seed clusters a point cloud with an identical point distance. You also can process the batch list via the context menu in the tree. Right-click on the seed cluster and select batch list (seed cluster). Of course you als can generate a point cloud for every individual seed cluster.

  1. Determine tbe increment.
  2. Add seed cluster to a batch list
  3. Process the batch list.

Further information Point Cloud Generation.

Colour Selection

Click the button Colour Selection at the section Selection on the right part of the window. Select the required colour and edit it.

  1. Select a colour.
  2. Click OK for further editing.

See for further information Purging Point Clouds by Colour Selection.

Merging Point Clouds

Merge several point clouds to a total point cloud. You merge point clouds in an optimal way using the marginal correction transformation (ICP). Thereto click on the button File:3Dicon and select the seed clusters.

  1. Select point clouds.
  2. Click Add.
  3. Click Merging Point Clouds to merge the point clouds without using the ICP algorithm.
  4. Click Start ICP to merge the point clouds using the ICP algorithm.

DSM

Triangulation

Select the triangulation window via the button File:3Dicon. Just click the button Start at the right part of the window.

  1. Enter a factor for the maximum ball radius.
  2. Starting triangulation.

See for further information [[Creating a DSM based on Point Clouds}}.

Texturing

First, click the button File:3Dicon and select your settings for texturing of digital surface models.

  1. Select images for texturing.
  2. Press Template:Texturing to start texturing.

Instead of texturing the triangulated surface model, you also can texturing only the points, see Texturing of point clouds.

For further information, see Texturing of DSMs.

Create a UCS

Click on the button Icon3D UCS.png and carry out the required settings. Finally save your new coordinate system by pressing the button Create a UCS.

  1. Determine the settings for the UCS-plane
  2. Select points
  3. Select an element type
  4. Measure the UCS-alignment

For further information, see UCS Management.

Orthophoto

To create an orthophoto, click on the button File:3Dicon and conduct the required settings at the tool window on the right.

  1. Enter the required settings for the orthophoto
  2. Press Calculate to calculate the orthofote.

For further information, see Generating Orthophots.

Training files metigo® MAP

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