# MaxBlobRadius

The maximum radius of a circle that represents a stationary object. When you set this parameter, blobs on the heatmap expand in size to represent the amount of time an object has remained stationary. A blob reaches the maximum radius after the time specified by MaximumStationaryTime.

TIP: To draw stationary objects on the heatmap, you must set the parameter BlobWeight.

Specify a value followed by the units that you want to use:

- `percent` or `%` - Percentage of the smallest image or video dimension (width or height).
- `pixels` or `px` - Number of pixels.

Type: | Custom
Default: | The value of InitialBlobRadius
Required: | No
Configuration Section: | TaskName
Example: | `MaxBlobRadius=50 pixels`
See Also: | BlobWeight InitialBlobRadius

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