这篇文章主要介绍“如何在Android中实现一个裁剪人脸类”的相关知识，小编通过实际案例向大家展示操作过程，操作方法简单快捷，实用性强，希望这篇“如何在Android中实现一个裁剪人脸类”文章能帮助大家解决问题。
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人脸裁剪类
public final class FaceCj {
private static BitmapFactory.Options BitmapFactoryOptionsbfo;
private static ByteArrayOutputStream out;
private static byte[] data;
private static FaceDetector.Face[] myFace;
private static FaceDetector myFaceDetect;
private static int tx = 0;
private static int ty = 0;
private static int bx = 0;
private static int by = 0;
private static int width = 0;
private static int height = 0;
private static float wuchax = 0;
private static float wuchay = 0;
private static FaceDetector.Face face;
private static PointF myMidPoint;
private static float myEyesDistance;
private static List facePaths;
private static String facePath;
public static Bitmap cutFace(Bitmap bitmap, Context context) {
facePaths = null;
BitmapFactoryOptionsbfo = new BitmapFactory.Options();
BitmapFactoryOptionsbfo.inPreferredConfig = Bitmap.Config.RGB_565; // 构造位图生成的参数，必须为565。类名+enum
out = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 50, out);
data = out.toByteArray();
bitmap = BitmapFactory.decodeByteArray(data, 0, data.length,
BitmapFactoryOptionsbfo);
try {
out.flush();
out.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
width = bitmap.getWidth();
height = bitmap.getHeight();
myFace = new FaceDetector.Face[5]; // 分配人脸数组空间
myFaceDetect = new FaceDetector(bitmap.getWidth(), bitmap.getHeight(), 5);
int numberOfFaceDetected = myFaceDetect.findFaces(bitmap, myFace);
if (numberOfFaceDetected <= 0) {// FaceDetector构造实例并解析人脸
bitmap.recycle();
return null;
}
facePaths = new ArrayList();
for (int i = 0; i < numberOfFaceDetected; i++) {
face = myFace[i];
myMidPoint = new PointF();
face.getMidPoint(myMidPoint);
myEyesDistance = face.eyesDistance(); //得到人脸中心点和眼间距离参数，并对每个人脸进行画框
wuchax = myEyesDistance / 2 + myEyesDistance;
wuchay = myEyesDistance * 2 / 3 + myEyesDistance;
if (myMidPoint.x - wuchax < 0) {//判断左边是否出界
tx = 0;
} else {
tx = (int) (myMidPoint.x - wuchax);
}
if (myMidPoint.x + wuchax > width) {//判断右边是否出界
bx = width;
} else {
bx = (int) (myMidPoint.x + wuchax);
}
if (myMidPoint.y - wuchay < 0) {//判断上边是否出界
ty = 0;
} else {
ty = (int) (myMidPoint.y - wuchay);
}
if (myMidPoint.y + wuchay > height) {//判断下边是否出界
by = height;
} else {
by = (int) (myMidPoint.y + wuchay);
}
try {
return Bitmap.createBitmap(bitmap, tx, ty, bx - tx, by - ty);//这里可以自行调整裁剪宽高
} catch (Exception e) {
e.printStackTrace();
}
}
bitmap.recycle();
return bitmap;
}
}关于“如何在Android中实现一个裁剪人脸类”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识，可以关注创新互联行业资讯频道，小编每天都会为大家更新不同的知识点。
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