java.lang.Object | |
↳ | android.media.FaceDetector |
Identifies the faces of people in a
Bitmap
graphic object.
Nested Classes | |||||||||||
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FaceDetector.Face | A Face contains all the information identifying the location of a face in a bitmap. |
Public Constructors | |||||||||||
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Creates a FaceDetector, configured with the size of the images to
be analysed and the maximum number of faces that can be detected.
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Public Methods | |||||||||||
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Finds all the faces found in a given
Bitmap . |
Protected Methods | |||||||||||
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Is called before the object's memory is being reclaimed by the VM.
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Inherited Methods | |||||||||||
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From class java.lang.Object
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Creates a FaceDetector, configured with the size of the images to be analysed and the maximum number of faces that can be detected. These parameters cannot be changed once the object is constructed.
width | the width of the image |
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height | the height of the image |
maxFaces | the maximum number of faces to identify |
Finds all the faces found in a given Bitmap
.
The supplied array is populated with FaceDetector.Face
s for each
face found. The bitmap must be in 565 format (for now).
bitmap | the Bitmap graphic to be analyzed |
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faces | an array in which to place all found
FaceDetector.Face s. The array must be sized equal
to the maxFaces value set at initialization |
IllegalArgumentException | if the Bitmap dimensions don't match the dimensions defined at initialization or the given array is not sized equal to the maxFaces value defined at initialization |
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Is called before the object's memory is being reclaimed by the VM. This can only happen once the VM has detected, during a run of the garbage collector, that the object is no longer reachable by any thread of the running application.
The method can be used to free system resources or perform other cleanup
before the object is garbage collected. The default implementation of the
method is empty, which is also expected by the VM, but subclasses can
override finalize()
as required. Uncaught exceptions which are
thrown during the execution of this method cause it to terminate
immediately but are otherwise ignored.
Note that the VM does guarantee that finalize()
is called at most
once for any object, but it doesn't guarantee when (if at all) finalize()
will be called. For example, object B's finalize()
can delay the execution of object A's finalize()
method and
therefore it can delay the reclamation of A's memory. To be safe, use a
ReferenceQueue
, because it provides more control
over the way the VM deals with references during garbage collection.
Throwable |
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