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# Geometry

The analysis mode to use when comparing the source media to 2-D objects in the training database.

Objects in media that you analyze may appear different to the training images you supplied, because the objects can be subject to various transformations and perspective distortion.

Set this parameter to one of the following options:

- `HOMOGRAPHY` - Use this option when the focal length of the camera is unknown and some perspective distortion is expected but the object is 2-D (rigid and flat).
- `SIM2` - Use this option when you want to allow only rotation and translation when compared to the training image. Out-of-plane rotation is not expected in this mode, so objects that have out-of-plane rotation are not recognized.

Type: | String
Default: | HOMOGRAPHY
Required: | No
Configuration Section: | TaskName
Example: | `Geometry=SIM2`
See Also: | Geometry3

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