Viewing scans

Once scans have been acquired, you can view them on the File Manager tab. This section discusses the viewing tools. For information on file management operations such as transferring and archiving, see File management.

Viewing scans in panoramic mode

Figure 7-37 shows the panoramic scan viewer. It displays a panoramic image of the current highlighted scan from the perspective of the scanner.

• Tap a scan’s row in the Scans list to highlight it and display it in the panoramic viewer.

• Drag anywhere on the image to pan.

• Tap the (Zoom in) button to zoom in on the scan. This hides the scans list and enables the annotation tools. Tap (Exit) to exit zoomed in mode.

	Panoramic scan viewer
	Scan colour schemes	Photographic colour Colour intensity with a spectrum Colour intensity with greyscale
	Exit current view	The button enables when zoomed in or in 3D view mode.
	Zoom controls	Zoom in Zoom out
	Scans list	This lists the scan files in the selected scan repository ().
	Scan repository selectors	See Transferring, archiving, and deleting scan files for more information.
	Scan selection tools	Select all scans Deselect all scans View selected scans in 3D (see Viewing scans in 3D for details) Start design conformance Archive selected scans Transfer selected scans These tools operate on scans selected in the Scans list (). If no scans are selected, they operate on the highlighted scan (). See Transferring, archiving, and deleting scan files for more information on transferring and archiving.
	Selected scans
	Highlighted scan	The highlighted scan appears in the panoramic viewer.
	Files drawer toggle button	Tap to hide or show the files drawer.
	Files drawer	Non-scan files appear here. See Managing non-scan file types for details on managing non-scan files.
	Non-scan file location selectors
	File selection tools	Select all files Deselect all files View selected objects in 3D Transfer selected files

Scan colour schemes

Scans can be coloured in three ways, as follows:

	Photographic colour Colours each scan point with photographic colouring acquired from the camera (if available). Note:  Photographic images do not cover the full vertical extents of the scan because of the camera’s reduced field of view. This may be noticeable when viewing scans taken close to walls or other tall structures.
	Colour intensity with a spectrum Colours each scan point by the intensity of the result using a colour spectrum. The lowest intensities are coloured blue, while the highest intensities are coloured red.
	Colour intensity with greyscale Colours each scan point by the intensity of the result using greyscale. The lowest intensities are coloured white, while the highest intensities are coloured dark grey. The scale is not linear and may help bring out detail not evident using the other schemes. Note:  If multiple scans are viewed in 3D view mode, a different uniform colour is applied to each scan viewed with the greyscale intensity option.

Annotating scans

The annotation tool allows you to draw freehand lines to identify features of interest on a scan. Annotations are stored with the scan, and can be viewed in FieldHHC’s panoramic or 3D viewers, or in PointStudio.

Tip:   Annotations are drawn in the ‘zoomed in’ mode of the panoramic viewer. Tap the (Zoom in) button to view annotations and use the annotation tools. The (Add annotation) button should appear when you zoom in. If not, annotations may be hidden. Tap the (Show/hide annotations) toggle to show annotations and reveal the button.

Creating annotations

To create an annotation:

1. Make sure you are on the File Manager tab and the scan you wish to annotate is highlighted in the Scans list.

2. Tap the (Zoom in) button to show the annotation tools. If annotations are hidden, tap the (Show/hide annotations) toggle.

3. Tap the (Add annotation) button. A new annotation label appears on the screen.

4. If you have selected an active feature code set in Settings, a dialog will appear that allows you choose a style for your annotations. Select the desired feature code and tap Apply. If there is no active feature code set, the default feature code style will be used for annotations.

5. Use the stylus to draw an annotation on the scan. You can create more than one annotation line for a single label.

Note:   Annotations are initially given a label based on the feature code name. If the default feature code is used, the label will be based on an increasing number starting at 1.

• Tap the annotation’s label field to stop annotating and return the view to pan mode.

Editing annotations

After creating an annotation, you can edit it as follows:

• Tap an annotation’s label field to select it for editing and show its controls, explained below.

  

  	Edit the annotation label.
  	Delete the annotation.
  	Set the annotation’s feature code (change its style).
  	Undo the previously drawn line.
  	Redo a line that was undone.

• Continue drawing on the scan image to add new lines to the selected annotation.

• Tap the annotation’s label field to stop annotating and return the view to pan mode.

Showing and hiding annotations

You can show or hide annotations in both the panoramic viewer and the 3D viewer.

• Tap the (Show/hide annotations) toggle to show or hide all annotations.

• In the 3D viewer, while annotations are showing, tap the (Show/hide labels) toggle to show or hide annotation labels only.

Feature codes

Feature codes are named line styles that you can apply to annotations. By default, FieldHHC will create annotations as solid lines using a unique colour for each new annotation. By creating your own feature codes, you can use a consistent custom annotation style for a given feature type, such as a resource type or geological feature. You can have multiple sets of feature codes available in FieldHHC and set a single one as the active set to use for new annotations.

Creating feature codes

Features codes need to be created in PointStudio and then copied into FieldHHC.

To create feature codes in PointStudio:

1. Go to the Features tab in the PointStudio preferences.

2. Select New... from the Profile drop-down to create a new feature set.

3. Click Add... to create a new feature. Configure the following fields for the feature as desired:

   • Name

   • Colour

   • Thickness

   • Style

   Note:  The other feature fields are not used in FieldHHC.

4. Continue adding new features for every named style you want.

5. Click Export... to export the feature code set to a JSON file (.json).

Consult the PointStudio help for more information on feature codes.

Setting and using the active feature code set

After creating feature codes and exporting them from PointStudio, you can use them in FieldHHC as follows:

1. Copy the JSON file defining a feature code set into FieldHHC. See Copying files from USB key for detailed instructions.

2. Set the active feature code set. The active feature code set affects which feature codes or styles are available for selection when creating new annotations.

   To set the active feature code set:

   1. Go to Settings > Configuration.

   2. Tap the button next to Feature code.

   3. Select the filename containing the desired feature code set from the list and tap Apply.

3. Create annotations as normal. When you create a new annotation, you will be prompted to select a feature code. The new annotation’s initial label will be taken from the feature code name, and the feature code’s style will be applied to the annotation lines.

   

Viewing scans in 3D

You can view scans and other data in 3D. The FieldHHC 3D viewer allows you to access other tools including design conformance, in-field registration and advanced registration.

• To view scans in 3D, select one or more scans in the Scans list, and then tap the (View in 3D) button.
  

• To view other object types in 3D, select them in the Files drawer, and then tap the (View in 3D) button.

• To exit the 3D viewer and return to the panoramic viewer, tap the button (see in Figure 7-40).

3D viewer and controls

	Scan colour schemes	Photographic colour Colour intensity with a spectrum Colour intensity with greyscale See Scan colour schemes for more information.
	View modes	Z-Up view Aerial view
	Measure tool	Tap to turn on the measure tool. Drag a line between two points to measure the distance between them.
	Manual positioning tools	See Manually positioning scans for details.
	Annotation toggles	Show or hide annotation text labels Show or hide annotations
	Exit 3D view	Tap to exit the 3D view and return to the panoramic viewer.
	Zoom controls	Zoom in Zoom out Zoom to data extents
	Back face points toggle	See Hiding back face points for details.
	Registration tools	See Registering scans for details.
	Undo and redo	Undo last action (appears when undo possible) Redo last action (appears when redo possible)
	Scale bar	Gives an indication of the scale of distances at the current zoom level.
	Compass and scan origin	The scan origin is indicated in the view with an X symbol. In Z-up view mode, the axis of rotation is indicated with a 3D compass arrow. The axis of rotation compass turns blue when the measure tool is on. The axis of rotation compass turns red in manual rotation mode. The axis of rotation compass turns yellow in manual translation mode.

Panning, zooming, and rotating the view

Use the following methods to pan, zoom, and rotate the view, depending on the current view mode.

	Z-Up view	Aerial view
Pan	Tap on a point relative to the compass to pan in that direction. Alternatively, pan by dragging the view with two fingers.	Pan the view by dragging with the stylus or a single finger.
Zoom	Use the and buttons to zoom in or out. Alternatively, zoom by pinching the view with two fingers. Pinch fingers apart to zoom in. Pinch fingers together to zoom out.	Use the and buttons to zoom in or out. Alternatively, zoom by pinching the view with two fingers. Pinch fingers apart to zoom in. Pinch fingers together to zoom out.
Rotate	Rotate the view around the compass by dragging with the stylus or a single finger.	(Rotation is disabled in aerial view mode.)

Hiding back face points

When scanning inside an enclosed space such as indoors or underground, the resulting scan contains points representing walls, roofs, and other surfaces that can obscure your view of the inside of the scanned space. These points are called back face points because they represent the back side of the surface when viewed from a given camera angle. You can hide these points to obtain a better view of the interior surface.

• Tap the (Show/hide back face points) button to toggle between showing or hiding back face points (see in Figure 7-40). When enabled, back face points are hidden. Because back face points are defined by the current camera angle, the points hidden or shown will change dynamically as you rotate the view.