User manual

1.1 Application Interface 11

Figure 1.6: Cameras’ control panel.

–

Exp: regulates the exposure time, that is the interval (in milliseconds) during which the camera

sensor integrates the light: the greater the exposure time, the brighter the image but the slower

the camera acquisition rate.

The button Reset to defaults allows to reset such parameters to their original values.

1.1.3.3 Alignment (light blue)

Collects all the tools to align data (Sect. 2.2.3).

1.1.3.4 Selection (turquoise)

These are all the tools for the interactive selection of data parts; the provided selection tools are:

• Rectangle selection: draws a rectangular selection area on the surface;

• Ellipse selection: draws an elliptical selection area on the surface;

• Polygon selection: draws a polygonal selection area on the surface, setting its vertexes with the

mouse;

• Freehand closed selection

: draws a freehand selection area on the surface, creating a closed

form based on the path traced by the mouse cursor;

• Freehand open selection

: draws a freehand selection area on the surface based on the path traced

by the mouse cursor;

• Segment selection

: selects the area covered by a segment traced by the mouse cursor upon the

surface; pressing down the key will allow to trace lines spaced by a predeﬁned angle (editable through

the options panel, and set by default at 45°);

•

Pass through / not pass through selection (only for meshes)

: the ﬁrst option selects all

the surface areas intersected by the current selection, while the second one only those currently visible:

in case more data layers overlap, the ﬁrst option selects part of each layer, while the second one only

selects the visible layer;

• Dilate selection to triangles’ crest (only for meshes)

: activating this tool allows to enlarge the

result of a given selection starting from the selection itself to include all the connected triangles which

normals form an angle (with respect to the normals associated to the triangles of the original selection)

below a given threshold. This tool is particularly useful to select planar areas on the 3D model;

• Select project data from view

: detects project items that contain part of the surface obtained

trough a certain selection: it could be useful to detect, in big data groups, those elements that are badly