Click or drag to resize
Accord.NET (logo)

MotionDetector Class
Motion detection wrapper class, which performs motion detection and processing.
Inheritance Hierarchy
SystemObject
  Accord.Vision.MotionMotionDetector

Namespace:  Accord.Vision.Motion
Assembly:  Accord.Vision (in Accord.Vision.dll) Version: 3.8.0
Syntax
Copy
public class MotionDetector
Request Example View Source

The MotionDetector type exposes the following members.

Constructors
  NameDescription
Public methodMotionDetector(IMotionDetector)
Initializes a new instance of the MotionDetector class.
Public methodMotionDetector(IMotionDetector, IMotionProcessing)
Initializes a new instance of the MotionDetector class.
Top
Properties
  NameDescription
Public propertyMotionDetectionAlgorithm
Motion detection algorithm to apply to each video frame.
Public propertyMotionProcessingAlgorithm
Motion processing algorithm to apply to each video frame after motion detection is done.
Public propertyMotionZones
Set of zones to detect motion in.
Top
Methods
  NameDescription
Public methodEquals
Determines whether the specified object is equal to the current object.
(Inherited from Object.)
Protected methodFinalize
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
(Inherited from Object.)
Public methodGetHashCode
Serves as the default hash function.
(Inherited from Object.)
Public methodGetType
Gets the Type of the current instance.
(Inherited from Object.)
Protected methodMemberwiseClone
Creates a shallow copy of the current Object.
(Inherited from Object.)
Public methodProcessFrame(Bitmap)
Process new video frame.
Public methodProcessFrame(BitmapData)
Process new video frame.
Public methodProcessFrame(UnmanagedImage)
Process new video frame.
Public methodReset
Reset motion detector to initial state.
Public methodToString
Returns a string that represents the current object.
(Inherited from Object.)
Top
Extension Methods
  NameDescription
Public Extension MethodHasMethod
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.)
Public Extension MethodIsEqual
Compares two objects for equality, performing an elementwise comparison if the elements are vectors or matrices.
(Defined by Matrix.)
Public Extension MethodTo(Type)Overloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
Public Extension MethodToTOverloaded.
Converts an object into another type, irrespective of whether the conversion can be done at compile time or not. This can be used to convert generic types to numeric types during runtime.
(Defined by ExtensionMethods.)
Top
Remarks

The class serves as a wrapper class for motion detection and motion processing algorithms, allowing to call them with single call. Unlike motion detection and motion processing interfaces, the class also provides additional methods for convenience, so the algorithms could be applied not only to UnmanagedImage, but to .NET's Bitmap class as well.

In addition to wrapping of motion detection and processing algorthms, the class provides some additional functionality. Using MotionZones property it is possible to specify set of rectangular zones to observe - only motion in these zones is counted and post procesed.

Sample usage:

Copy
// create motion detector
MotionDetector detector = new MotionDetector(
    new SimpleBackgroundModelingDetector( ),
    new MotionAreaHighlighting( ) );

// continuously feed video frames to motion detector
while ( ... )
{
    // process new video frame and check motion level
    if ( detector.ProcessFrame( videoFrame ) > 0.02 )
    {
        // ring alarm or do somethng else
    }
}
See Also