Smallworld

1
Topic
Automatic Positional Accuracy Improvement of
Utility Documentation in GE
Core Dipl. Geogr. Dipl. Geol.
Andreas Möller GIS Consultant
2
The Software Component
3
The Main Problem
Reference map replacement
4
Homogenisation of Mains
...is the adjustment of the utility documentation
on a changed geodetic reference with respect to
the vicinity under consideration of geometric
conditions
5
The Way LEHO Works
6
Searching for Identical Points
7
Searching for Identical Points
8
Labelling of Utility Anchor Points
9
Labelling of Utility Anchor Points
10
Detecting Constraints
11
Detecting geometric conditions
12
Detecting Constraints
13
Calculating Displacement
14
Shifting utilities pre-PAI
15
Shifting utilities map update
16
Shifting utilities vector shift
17
Shifting utilities shift network
18
Shifting utilities end result
19
Summary - 5 Steps to Success...

• Searching for identities

• Labelling the utility anchor points

• Detecting geometric constraints

• Calculation of displacement

• Shifting the utilities according to the
  calculated displacement