Civil Engineering Reference
In-Depth Information
Figure 8.5 Information retrieval procedure
plan. Secondly, they need to select a view unit, such as a room in the floor plan. The
view unit represents a room or public area that the user has chosen to view. Thirdly,
users have to specify their location within the view unit. Two instructions (distance
value and projection range) were provided to help specify the user's position, in
order to make the positioning more precise (Figure 8.7). Finally, users can obtain
related detailed information based on their location.
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