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5 tracking points semi-automatically – Triton Isis User Manual

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June 2004 Isis® Sonar User's Manual, Volume1

156

If navigation data area present, they are listed also.

A sample screen with a polygon tagged for data collection is shown in
Figure 9-5.

Figure 9-5: Polygon drawn on imagery using Digitize Lines and

Polygons

9.3.5 Tracking

Points

Semi-Automatically

The semi-automatic method of tracking points is a compromise between
speed and precision. Although not as precise as the manual method, the
semi-automatic method can quickly log points for linear features that stand
out in your imagery. Consequently, it is a good method to use if you have a
prominent linear feature that’s limited to a given area in your imagery, or if

Chapter 9: Using the Tools Menu