public
class
FaceDetector
extends Object
| java.lang.Object | |
| ↳ | android.media.FaceDetector |
Identifies the faces of people in a
Bitmap graphic object.
Nested classes | |
|---|---|
class |
FaceDetector.Face
A Face contains all the information identifying the location of a face in a bitmap. |
Public constructors | |
|---|---|
FaceDetector(int width, int height, int maxFaces)
Creates a FaceDetector, configured with the size of the images to be analysed and the maximum number of faces that can be detected. |
|
Public methods | |
|---|---|
int
|
findFaces(Bitmap bitmap, Face[] faces)
Finds all the faces found in a given |
Protected methods | |
|---|---|
void
|
finalize()
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
Developers
FaceDetector (int width,
int height,
int maxFaces)
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. Note that the width of the image must be even.
| Parameters | |
|---|---|
width |
int:
the width of the image |
height |
int:
the height of the image |
maxFaces |
int:
the maximum number of faces to identify
|
int findFaces (Bitmap bitmap, Face[] faces)
Finds all the faces found in a given Bitmap.
The supplied array is populated with FaceDetector.Faces for each
face found. The bitmap must be in 565 format (for now).
| Parameters | |
|---|---|
bitmap |
Bitmap:
the Bitmap graphic to be analyzed |
faces |
Face:
an array in which to place all found
FaceDetector.Faces. The array must be sized equal
to the maxFaces value set at initialization |
| Returns | |
|---|---|
int |
the number of faces found |
| Throws | |
|---|---|
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 |
void finalize ()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
A subclass overrides the finalize method to dispose of
system resources or to perform other cleanup.
The general contract of finalize is that it is invoked
if and when the JavaTM virtual
machine has determined that there is no longer any
means by which this object can be accessed by any thread that has
not yet died, except as a result of an action taken by the
finalization of some other object or class which is ready to be
finalized. The finalize method may take any action, including
making this object available again to other threads; the usual purpose
of finalize, however, is to perform cleanup actions before
the object is irrevocably discarded. For example, the finalize method
for an object that represents an input/output connection might perform
explicit I/O transactions to break the connection before the object is
permanently discarded.
The finalize method of class Object performs no
special action; it simply returns normally. Subclasses of
Object may override this definition.
The Java programming language does not guarantee which thread will
invoke the finalize method for any given object. It is
guaranteed, however, that the thread that invokes finalize will not
be holding any user-visible synchronization locks when finalize is
invoked. If an uncaught exception is thrown by the finalize method,
the exception is ignored and finalization of that object terminates.
After the finalize method has been invoked for an object, no
further action is taken until the Java virtual machine has again
determined that there is no longer any means by which this object can
be accessed by any thread that has not yet died, including possible
actions by other objects or classes which are ready to be finalized,
at which point the object may be discarded.
The finalize method is never invoked more than once by a Java
virtual machine for any given object.
Any exception thrown by the finalize method causes
the finalization of this object to be halted, but is otherwise
ignored.
| Throws | |
|---|---|
Throwable |
|