Importing a project from BINGO

When you import a project from BINGO, the folder containing the project file, project.dat, must contain the following files:

image.dat
geoin.dat
itera.dat

The files must be named exactly as shown. If the selected folder does not contain the three files, a message appears in the Retrieved Project Information box, warning you of any missing files.

The image and point IDs are retrieved exactly as written in the image file and the coordinates file unless there is an AT map file (AT_point_map.txt).

Mapping information from your BINGO project to OrthoEngine can be one to many or many to one:

If the value for Point ID in your BINGO project matches an existing one in your OrthoEngine project, the one in your BINGO project will be used, and it will overwrite the OrthoEngine one.
Discrepancy between the number of points in both projects is allowed. Importing a BINGO project into an existing OrthoEngine project does not remove any of the existing observations, such as images, GCPs, TPs, or exterior orientation (EO) for a given image. Instead, the existing data in OrthoEngine—image location, as an example—is augmented by any additional information imported from BINGO. Information on the same observation, such as existing GCPs and TPs, will be overwritten, but any existing OrthoEngine information not available in the BINGO external project is retained.
Points in your BINGO project must have X, Y and Z image and ground coordinates. If a point is missing any of this information, it is not imported.
When the imported project contains calibration information on more than one camera, only the first one is imported.
Points marked as skipped in BINGO are dealt with accordingly in OrthoEngine. GCPs marked as skipped become check points, and tie points marked as skipped are removed from the OrthoEngine project.

After you import the project

BINGO will generate the final aerial triangulation (AT) bundle adjustment for the imagery based on the initial EO, camera calibration information, and the collected GCPs/TPs.

BINGO will adjust or eliminate problematic GCPs/TPs in the original OrthoEngine project; therefore, the imported BINGO project may have fewer GCPs/TPs than the OrthoEngine one. BINGO will also create a distortion grid, which you can use to remove camera distortion from the image. The distortion grid is used in the coordinate transformations of the airphoto math model.

You also, as an option, import the GCPs and TPs from the BINGO project, which will overwrite the corresponding ones in the OrthoEngine project. When considering whether to import the GCPs and TPs from the BINGO project, consider the following:

When to import BINGO GCPs and TPs
If BINGO cannot generate the final bundle adjustment for the project due to the quality or quantity of the GCPs and TPs, import the BINGO project file and the BINGO GCPs and TPs. If necessary, you can modify the GCPs and TPs. However, by doing so, you must recompute the math model in OrthoEngine. Alternatively, you can export the OrthoEngine project to BINGO, redo the bundle adjustment, and then import it to OrthoEngine.
When not to import BINGO GCPs and TPs
If you are satisfied with the accuracy of the BINGO bundle adjustment, you need not import the GCPs and TPs. Your BINGO project has a finalized bundle adjustment for the project and, therefore, you can neither collect GCPs and TPs nor recompute the math model in OrthoEngine.

To inspect residual errors, you must do so in BINGO; that is you cannot create a residual-error report in OrthoEngine (the Residual report command is unavailable).

You can proceed to extract the digital elevation model (DEM) or produce orthorectified imagery, as necessary.
Note: When you import a project from BINGO, the title bar of the OrthoEngine project will be updated to indicate that the AT is that of the BINGO project you imported; that is, the title will be displayed as OrthoEngine: <project name> using BINGO AT.

To import a project from BINGO

In the OrthoEngine window, on the Tools menu, point to Import, and then click Project.
The Import Project window appears.
In the Input file box, type the full path and file name of the project you want to import, or click Browse to select a file.
After you select the file, the information retrieved from the selected BINGO project file appears in the Retrieved Project Information box.
Under Formats, do the following:
- Make sure BINGO is selected.
- If you also want to import the GCPs and TPs from the BINGO project, select the Import GCPs/TPs check box.
  If you want to use additional self-calibration parameters, consider using a grid file to correct for distortion.
  
  Warning: When you select this check box, the GCPs and TPs in your OrthoEngine project will be overwritten. Consider first making a backup copy of your OrthoEngine project before you import GCPs and TPs from the BINGO project.
If the retrieved project information meets the necessary requirements, click Import.