Preparation of footprints

For linking the footrpints with the oblique aerial images in WebOffice 10.9 SP1 it is essential that an attribute is provided in the service which contains the essential information in connected form. This is the following information:

 

Image_Number

This is the unique number of the oblique aerial images.

 

Flight_Direction

The flight direction indicates the direction in which the aircraft flew when the image was taken. The values must be in the following form: "N, S, W, O"

 

Camera_Orientation

Camera orientation refers to the relative orientation of the camera to the aircraft during shooting.

 

icon_cross-reference

The values used here are crucial for the correct naming of the image files and the directory structure. For more information, please refer to the chapter Preparation of Images.

 

Strip

This is the strip number of the oblique aerial images.

 

Direction_of_View

The direction of view is the compass direction in which the camera was aligned when the oblique aerial images were taken. The values must be in the following form: Nord, Süd, West, Ost"

 

LAT

The field represents the Y-coordinate of the centroids of the footrpints and can be calculated with the function Calculate Geometry in ArcMap:

 

Calculation "LAT" in Field Calculator

Calculation "LAT" in Field Calculator

 

For Property select Y Coordinate of Centroid and for Units the unit Decimal Degrees":

 

 

Calculation "LAT" in Field Calculator

Calculation "LAT" in Field Calculator

 

 

LON

The field represents the X-coordinate of the centroids of the footrpints and is calculated analogous to LAT. Here, X Coordinate of Centroid must be selected in the Field Calculator under Property.

 

If all these fields are present in the data in the correct form, the Field Calculator can be used to calculate the attribute Bildinfo, which is the key field for the entire application. Provided that the fields are named as in this manual, the following command can be executed to calculate the attribute Bildinfo in the Field Calculator:

 

[Image_Number] &"_"& [Flight_Direction] &"_"& [Camera_Orientation] &"_"& [Strip] &"_"& [Direction_of_View] &"_"& [LAT] &"_"& [LON]

 

 

If other field names were used, the command must be adapted accordingly:

 

Calculation the field "Bildinfo" in ArcMap using Field Calculator

Calculation the field "Bildinfo" in ArcMap using Field Calculator