Chapter 11 — Exam Question 2

Give three reasons for field observations in the process of image interpretation.

Answer

Field observations are needed in the process of visual image interpretation for
the following reasons:

1. For better identification of features, since in that way it is based on know-

ledge collected prior to the interpretation itself,

2. for completeness of interpretation results with respect to features which

cannot be fully seen in the image (e.g. a house and a road an a forest), and

3. for validation, as a mean to assess the accuracy of our visual interpretation.

That is, with respect to both the geometric and the thematic accuracy of the
interpretation.

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