====== Prepare Oblique data for Generic Import  ======

This page describes how to prepare oblique resources for a generic import. \\
Using the generic [[195:desktop_ext:mapping:manage_import:templates|Orbit import templates]] prepared oblique resources can be [[195:desktop_ext:mapping:manage_import:index|imported into Orbit]].

It is **strongly recommend** to read first [[195:technology:3d_mapping:about_resources_oblique|]].

===== Imagery =====

The generic import has the possibility to import 4 cameras. \\
One camera import requires one set of images and one positions and orientations file. 

=== Image files ===

  * Image type : Rectified, undistorted images.
  * Image resolution : According camera calibration.
  * File format : Each image is one *.tif file.
  * File name : Exactly as "Filename" value of photo position file, see below.
  * Folder structure : All files in one folder for each camera.

=== Image Positions and orientations files ===

  * File format : One ascii *.csv or *.txt file.
  * File structure Rows : Each image is one record.
  * File structure Columns : Comma separated (char44), headers, with exact order as the example below.
  * Value of “Filename” : File name as on disk, with file extension.
  * Value of Coordinates : any [[195:technology:core:crs|supported coordinate system]] can be used, Long/Lat order for geographical coordinates, decimal notation, without thousands separator. 
  * Value of Orientation angles : ASPRS definition (Reference : Nadir, X-East, Y-North), Omega Phi Kappa, degrees, decimal notation, without thousands separator. 

<code>
Filename,X/Long,Y/Lat,Z,Omega,Phi,Kappa
front_429,1018436.174,6278910.255,1265.558,1.7952,44.4326,197.0907
front_430,1018648.342,6278901.955,1265.849,0.9135,44.4593,198.4877
front_431,1018860.435,6278896.273,1266.28,0.6044,44.4609,198.9635
...
</code>

=== Camera specifications ===

Review and adjust the Camera Settings in the planar[X]/import/import_locations.ord configuration file prior to the import.

  * Focal length in mm.
  * Sensor Pixel Size in mm.
  * Sensor Width and Height in pixels.
  * Sensor Principal Pixel X and Y in pixels from left lower corner.
===== DTM =====

=== Raster file ===

  * File format : One [[195:technology:supported_formats:index|supported raster file format]].
  * Value of Coordinates : Same as Photo Position file, see above.