BlobCountingObjectsProcessing Class |
Namespace: Accord.Vision.Motion
The BlobCountingObjectsProcessing type exposes the following members.
Name | Description | |
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BlobCountingObjectsProcessing |
Initializes a new instance of the BlobCountingObjectsProcessing class.
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BlobCountingObjectsProcessing(Boolean) |
Initializes a new instance of the BlobCountingObjectsProcessing class.
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BlobCountingObjectsProcessing(Int32, Int32) |
Initializes a new instance of the BlobCountingObjectsProcessing class.
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BlobCountingObjectsProcessing(Int32, Int32, Boolean) |
Initializes a new instance of the BlobCountingObjectsProcessing class.
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BlobCountingObjectsProcessing(Int32, Int32, Color) |
Initializes a new instance of the BlobCountingObjectsProcessing class.
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Name | Description | |
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HighlightColor |
Color used to highlight motion regions.
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HighlightMotionRegions |
Highlight motion regions or not.
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MinObjectsHeight |
Minimum height of acceptable object.
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MinObjectsWidth |
Minimum width of acceptable object.
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ObjectRectangles |
Rectangles of moving objects.
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ObjectsCount |
Number of detected objects.
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Name | Description | |
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Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) | |
Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) | |
GetHashCode | Serves as the default hash function. (Inherited from Object.) | |
GetType | Gets the Type of the current instance. (Inherited from Object.) | |
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) | |
ProcessFrame |
Process video and motion frames doing further post processing after
performed motion detection.
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Reset |
Reset internal state of motion processing algorithm.
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ToString | Returns a string that represents the current object. (Inherited from Object.) |
Name | Description | |
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HasMethod |
Checks whether an object implements a method with the given name.
(Defined by ExtensionMethods.) | |
IsEqual |
Compares two objects for equality, performing an elementwise
comparison if the elements are vectors or matrices.
(Defined by Matrix.) | |
To(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.) | |
ToT | 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.) |
The aim of this motion processing algorithm is to count separate objects in the motion frame, which is provided by motion detection algorithm. In the case if HighlightMotionRegions property is set to , found objects are also highlighted on the original video frame. The algorithm counts and highlights only those objects, which size satisfies MinObjectsWidth and MinObjectsHeight properties.
Note |
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The motion processing algorithm is supposed to be used only with motion detection algorithms, which are based on finding difference with background frame (see SimpleBackgroundModelingDetector and CustomFrameDifferenceDetector as simple implementations) and allow extract moving objects clearly. |
Sample usage:
// create instance of motion detection algorithm IMotionDetector motionDetector = new ... ; // create instance of motion processing algorithm BlobCountingObjectsProcessing motionProcessing = new BlobCountingObjectsProcessing( ); // create motion detector MotionDetector detector = new MotionDetector( motionDetector, motionProcessing ); // continuously feed video frames to motion detector while ( ... ) { // process new video frame and check motion level if ( detector.ProcessFrame( videoFrame ) > 0.02 ) { // check number of detected objects if ( motionProcessing.ObjectsCount > 1 ) { // ... } } }