Android Camera Face Detector
( ค้นหา ใบหน้า  ด้วย Android )
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public class FaceDetector
extends Object| java.lang.Object | |
| ↳ | android.media.FaceDetector | 
Class Overview
Identifies the faces of people in a 
 
Bitmap graphic object.
Summary
| 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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 
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 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 
Finds all the faces found in a given  Bitmap. | |||||||||||
| Protected Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 
Invoked when the garbage collector has detected that this instance is no longer reachable. | |||||||||||
| [Expand] 
Inherited Methods | |||||||||||
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Public Constructors
public FaceDetector (int width, int height, int maxFaces)
Since: API Level 1
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 | the width of the image | 
|---|---|
| height | the height of the image | 
| maxFaces | the maximum number of faces to identify | 
Public Methods
public int findFaces (Bitmap bitmap, Face[] faces)
Since: API Level 1
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 | the Bitmapgraphic to be analyzed | 
|---|---|
| faces | an array in which to place all found FaceDetector.Faces. The array must be sized equal
               to the maxFaces value set at initialization | 
Returns
- 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 | 
|---|
Protected Methods
protected void finalize ()
Since: API Level 1
Invoked when the garbage collector has detected that this instance is no longer reachable.
 The default implementation does nothing, but this method can be overridden to free resources.
 
Note that objects that override
If you must use finalizers, consider at least providing your own
Unlike constructors, finalizers are not automatically chained. You are responsible for calling
Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.
Note that objects that override
finalize are significantly more expensive than
 objects that don't. Finalizers may be run a long time after the object is no longer
 reachable, depending on memory pressure, so it's a bad idea to rely on them for cleanup.
 Note also that finalizers are run on a single VM-wide finalizer thread,
 so doing blocking work in a finalizer is a bad idea. A finalizer is usually only necessary
 for a class that has a native peer and needs to call a native method to destroy that peer.
 Even then, it's better to provide an explicit close method (and implement
 Closeable), and insist that callers manually dispose of instances. This
 works well for something like files, but less well for something like a BigInteger
 where typical calling code would have to deal with lots of temporaries. Unfortunately,
 code that creates lots of temporaries is the worst kind of code from the point of view of
 the single finalizer thread.
 If you must use finalizers, consider at least providing your own
ReferenceQueue and having your own thread process that queue.
 Unlike constructors, finalizers are not automatically chained. You are responsible for calling
super.finalize() yourself.
 Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.
Throws
| 
Throwable การตรวจจับใบหน้า Nested Classes FaceDetector.Face เป็นข้อมูลทั้งหมดของใบหน้า ประกอบด้วย ที่ระบุตำแหน่งของใบหน้า ใน ไฟล์ภาพบิตแมป 
 
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