get Bitmaps For Faces - Android android.media

Android examples for android.media:FaceDetector

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Description

get Bitmaps For Faces

Demo Code


//package com.java2s;
import java.util.ArrayList;
import android.graphics.Bitmap;
import android.graphics.PointF;
import android.graphics.Rect;

import android.media.FaceDetector.Face;
import android.util.Log;

public class Main {
    private static final float GOLDEN_RATIO = 1.61803399f;

    @SuppressWarnings("static-access")
    public static ArrayList<Bitmap> getBitmapsForFaces(
            ArrayList<Face> faces, Bitmap bitmap) {
        ArrayList<Bitmap> srcBitmaps = new ArrayList<Bitmap>();
        for (Face face : faces) {
            if (face != null) {
                Rect src = getFaceRect(face);
                try {
                    srcBitmaps.add(bitmap.createBitmap(bitmap, src.left,
                            src.top, src.right - src.left, src.bottom
                                    - src.top, null, false));
                } catch (Exception e) {
                    Log.e("Error",
                            "in getBitmapsForFaces: " + e.getMessage());
                }/*from   w w w  .  j a v a 2  s.c o  m*/
            }
        }
        return srcBitmaps;
    }

    public static Rect getFaceRect(Face face) {
        // GOLDEN_RATIO
        // float xRatio = ((float) getWidth()) / mBitmap.getWidth();
        // float yRatio = ((float) getHeight()) / mBitmap.getHeight();
        // TODO improve scaling by looking at pose and euler y
        PointF midPoint = new PointF();
        face.getMidPoint(midPoint);
        int x = (int) (midPoint.x - (face.eyesDistance()));
        int y = (int) (midPoint.y - (face.eyesDistance()));
        int width = x + (int) (face.eyesDistance() * 2);
        int height = y + (int) (face.eyesDistance() * 2 * GOLDEN_RATIO);
        return new Rect(x, y, width, height);
    }
}

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