Point Cab

Layout and Sectionチュートリアル

You can proceed analogously to the instructions shown here if you want to create floor plans, site plans, ceiling plans, top views or sections.

In principle, you create sections and layouts in a similar manner in PointCab. You start the creation of a layout in PointCab’s default front view, but you start the creation of a section in the default top view.

With PointCab version 3.4, the two tools and buttons Layout and Section have been merged into one tool.

In order to analyze the overlapping of scans, you can create the visual display by means of indexed-based colors of the scans. This allows you to display the areas of the individual scans in color and distinguish them now.

Tutorial units

  • Create a layout

    Activate Layout tool:

    For more precision switch to tabbed view by pressing F3 (or View–>Tabbed view)

    Activate the front view:

    Turn off scan positions by clicking the small icon or by pressing P key :

    Left-click start and end points of a section to define your layout:

    Extend the area from a little above the floor to a little below the ceilling. Since PointCab is able to process any amount of data, you will see every single detail in your layout :

    Now activate the top view. Here you can sie the selected area

    Reduce the selection to the building’s area:

    If necessary set the parameters in Job Editor:

    Start calculation of your layout:

    Right-click Job to open the layout as soon it turns green:

    Processed layout in PointCab :

    Alternatively you can open a folder containing your layout in DWG, DXF, DAE formats by right -click selected Job and click Show in folder :

    PointCab results in Windows Explorer:

    Double-click DWG file opens the layout in free program Autodesk DWG-TrueView:

    You can find how to open PointCab results in your CAD Software in our CAD tutorials.

  • Duplicate a layout in views

    Activate the section you want to duplicate and right-click. From the Context-menu choose Duplicate:

    A window, in which the parrallel offset and the number of duplicates can be defined, opens :

    According to your settings you can see now a new section:

    Activate it and adjust the selected area :

    Start processing in Job List:

    Right-click selected Job and click open to see the results:

    Alternatively you can duplicate layouts and sections directly in Job List. See the example below . All other steps remain unchanged :

  • Floor and ceiling plan

    With a help of layout tool you can easily prepare a floor documentation. Start with our Layout tool:

    As a first point mark the edge between the floor and the wall :

    Drag the project area to the right corner :

    Now you can narrow a bit the relevant area:

    Ensure that the direction of your project is from top to bottom . You can adjust it Job Editor parameters. In case the colour option was applied on the site ,you can select an analysis in colour :

    Now you can start the processing clicking the green Start Button and afterwards open the Job right-clicking it:

    Your floor plan will be showed in PointCab:

    A ceiling plan can be obtained in the same way , only the project direction should be draged from bottom to top.

  • Beam layer

    For the extended analysis of beam layer a layout(topview and position in XY values) and a section (frontview and Z value) are necessary.
    We start with a layout. It can be defined in front view:

    Select the start point directly on the roof-edge resp. on the first beam :

    Drag the end point horizontally to the other beam :

    The task is ready to processed in Job List. Now we switch to our top view and activate Section tool :

    As previously a start and an end point have to be chosen:

    Both tasks ( layout and section) are ready to processed in only one step. Click the Process All Jobs button :

    Both tasks ( layout and section) are ready to processed in only one step. Click the Process All Jobs button :

  • Layout settings

    Hereinafter, all settings in our Job Editor are explained.

    Settings Layout parameters:

    In the tab Layout Parameter, you find X Y Z coordinates of the layout line or plane of projection.

    The section area defines the width of the section – that means all measured points, which are located within the yellow highlighted section area, are processed in PointCab.

    The angle indicates the measured angle between the horizontal basis (e. g. of the X axis) and the generated intersection line.

    Due to the parameter Direction, you can determine how you look at your object and how it is projected. You can determine, for instance, if you want to look from the bottom up in order to create a ceiling plan.

    By choosing the Align settings, you can adjust your layout line to the X axis or Y axis.

    The feature Stretch allows the elongation of your layout line in a defined angle.

    Settings Layout processing:

    Image resolution:

    Each orthophoto created with PointCab consists of single image points that are representative for each measured point in your point cloud. You use the image resolution to define the quality of the orthophoto. The higher the resolution, the more detailed your image of the point cloud. Orthophotos with high resolution need more storage space and they often cannot be imported with the same resolution in other systems!

    For the analysis, it is also important to rely on the perfect settings. It usually makes sense to get an overview of the project – in low resolution – and then to select the areas which shall be analyzed in detail.

    Reflectivity:

    Beside of the X, Y and Z coordinates, a laser scanner determines the reflection characteristics of real objects. Different materials have different reflection values. By adjusting the reflectivity, either you get very accentuated edges (0%) or you can better localize or distinguish different materials (100%).

    Color:

    PointCab allows the use of color information that has been captured by the laser scanner. You may use full color information (100%) or no color information (0%).

    Scan radius:

    For processing, PointCab uses only points within the defined radius around the center of each scanner position (point cloud). This radius is defined by means of the setting scan readius. The setting scan radius should be adjusted to the respective laser scanning project. If the scan radius is too small, “empty” areas arise. If the scan radius is too large, distortions and blurry areas can be the result.

    Scan positions:

    Single scanner positions can be activated or deactivated. If a scanner position is deactivated, all measured points of that scanner position are not included during processing. PointCab only uses activated point clouds for processing.

    Settings CAD output:

    In Job Editor, you can choose all settings, which you have made in your CAD system, in the tab CAD. For instance, you can change the background color or change the export unit from meters into millimeters.

    In PointCab, the following image file formats are available: PNG – JPG – BMP – TIFF.

    You can use projection to define which coordinates can be saved in the output file. Use the setting Planar if you work with 2D programs or 3D CAD software. In that setting, the orthophoto is created in the XY plane.

    Settings File output:

    Use the tab File to adjust the File path and the name of your layout.

    The Exports indicate the format you want to save your results in. With PointCab, you can create DWG, DXF and DAE files.

  • Sections: Create a facade plan

    In order to define a facade you should choose for a start point a house corner – for this example we selected the left house corner:

    Hold the Shift -key down to keep the selection parallel to the axis and to define a second point-the right bottom house corner:

    Important by the selection is the correct postion of the projection layer(the red dashed line). It should be placed exactly on the house wall.

    An incorrect position of the projection layer is shown below:

    Next the area definition’s limits should be set. In the case where the outside as well as the inside facade of the building will be analysed , it is recommended to define the top limit within the walling. In this way the point clouds which are placed inside the building and not on the facade will be excluded:

    Finally the projection direction (the small red arrow in the middle of the section definition) should be aligned :

    Finally the projection direction (the small red arrow in the middle of the section definition) should be aligned :

  • Output a facade plan in colour

    Left click to select the first point of your facade , for example the left bottom corner of the building :

    And the end point of facade , the right corner of the building:

    Now the area of the considered point cloud will be adjusted:

    Your facade plan is now in Job List ready to be processed. In the Job Editor you can edit all settings and processing mode :

    Here you can edit the processing and activate the Colour :

    You can give an individual name to the Section: in Job Editor under File you have a possibility to change a storage path and a name :

    Your job can be processed now :

    Double click to open your facade plan or in extended menu (right click) click Open :

    Ihren Speicherpfad erreichen Sie über das erweiterte Menü (rechter Mausklick) über den Befehl Im Ordner anzeigen:

    You can acces your storage path by the extended menu (right click ) and Show in Folder:

    Your folder will appear :

    …and you can open your CAD results