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# VehicleModel Engine Configuration Parameters

A VehicleModel analysis task identifies the manufacturer and model of vehicles detected during number plate recognition. The vehicles are compared with known vehicles stored in a database.

Before configuring a VehicleModel analysis task, you must train Media Server to recognize vehicles. For information about training Media Server, refer to the Media Server Administration Guide.

This section describes the parameters that you can use to configure a VehicleModel task.

Configuration Parameter | Description
--- | ---
ColorRegion | Specifies the region to output to the `ColorRegionWithSource` output track, so that you can configure an analysis task to identify the color of the vehicle.
Database | The name of the database that contains known vehicle models.
DetectEveryFrame | Specifies whether to use every frame in which a vehicle is present to improve the accuracy of detection.
Input | The name of the track to analyze.
MinGrillePercentage | The minimum amount of the vehicle grille that must be visible in the image to attempt vehicle identification.
Perspective | Specifies whether source images are affected by perspective transformations.
Type | The analysis engine to use. Set this parameter to `VehicleModel`.

## Output Tracks

Output track | Type | Description | Output1This column indicates whether the information contained in the track is included by default in the output created by an output task (when you don't set the Input parameter for the output task).
--- | --- | --- | ---
`ColorRegionWithSource` | VehicleColorRegionAndImage | Describes a region that is expected to contain a sample of the vehicle color. The track also contains the source image. You can use this track with another engine to determine the color of the identified vehicle. | No
`Data` | VehicleModelResult | Contains a record for each vehicle. If the same vehicle appears in consecutive frames, there will be a record for each frame. | No
`DataWithSource` | VehicleModelResultAndImage | Contains a record for each vehicle. If the same vehicle appears in consecutive frames, there will be a record for each frame. Each record includes the source image. | No
`Result` | VehicleModelResult | Contains a record for each result. If the same vehicle appears in consecutive frames, only one result is produced. | Yes
`ResultWithSource` | VehicleModelResultAndImage | Contains a record for each result. If the same vehicle appears in consecutive frames, only one result is produced. Each record also contains the best source image. | No

VehicleColorRegionAndImage

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the result.
colorregion | PolygonData | Describes a region in the source image that is expected to contain a sample of the vehicle color.
image | ImageData | The source image.
colorregionpercentage | Integer | The percentage of the color region contained within the source image. It is possible for the color region to be outside the source image, for example when only part of the vehicle appears in the image.

VehicleModelResult

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the result.
grillepatch | PolygonData | Describes the region of the image that contains the vehicle grille.
identity | IdentityData | The identity of the vehicle in the database that matches the vehicle in the image. If the vehicle was not recognized, this field is empty.
grillepercentage | Integer | The percentage of the vehicle grille that was visible in the source image.
nondetectinfo | String | If the vehicle could not be identified, this field explains why.

VehicleModelResultAndImage

Field name | Type | Description
--- | --- | ---
id | UUIDData | A universally unique identifier to identify the result.
grillepatch | PolygonData | Describes the region of the image that contains the vehicle grille.
identity | IdentityData | The identity of the vehicle in the database that matches the vehicle in the image. If the vehicle was not recognized, this field is empty.
image | ImageData | The source image.
grillepercentage | Integer | The percentage of the vehicle grille that was visible in the source image.
nondetectinfo | String | If the vehicle could not be identified, this field explains why.

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