android - 使用视觉 API 在脸上拍摄可绘制/绘画的照片

Question

我在尝试什么？

我正在尝试在脸上拍摄可绘制/绘画的照片，但我无法在同一张照片上获得两者。

我尝试了什么？

我已经尝试使用 CameraSource.takePicture 但我只是得到了没有任何可绘制/绘画的脸。

mCameraSource.takePicture(shutterCallback, new CameraSource.PictureCallback() {
            @Override
            public void onPictureTaken(byte[] bytes) {
                try {
                    String mainpath = getExternalStorageDirectory() + separator + "TestXyz" + separator + "images" + separator;
                    File basePath = new File(mainpath);
                    if (!basePath.exists())
                        Log.d("CAPTURE_BASE_PATH", basePath.mkdirs() ? "Success": "Failed");
                    String path = mainpath + "photo_" + getPhotoTime() + ".jpg";
                    File captureFile = new File(path);
                    captureFile.createNewFile();
                    if (!captureFile.exists())
                        Log.d("CAPTURE_FILE_PATH", captureFile.createNewFile() ? "Success": "Failed");
                    FileOutputStream stream = new FileOutputStream(captureFile);
                    stream.write(bytes);
                    stream.flush();
                    stream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });

我也尝试过使用:

mPreview.setDrawingCacheEnabled(true);
        Bitmap drawingCache = mPreview.getDrawingCache();
        try {
            String mainpath = getExternalStorageDirectory() + separator + "TestXyz" + separator + "images" + separator;
            File basePath = new File(mainpath);
            if (!basePath.exists())
                Log.d("CAPTURE_BASE_PATH", basePath.mkdirs() ? "Success": "Failed");
            String path = mainpath + "photo_" + getPhotoTime() + ".jpg";
            File captureFile = new File(path);
            captureFile.createNewFile();
            if (!captureFile.exists())
                Log.d("CAPTURE_FILE_PATH", captureFile.createNewFile() ? "Success": "Failed");
            FileOutputStream stream = new FileOutputStream(captureFile);
            drawingCache.compress(Bitmap.CompressFormat.PNG, 100, stream);
            stream.flush();
            stream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

在这种情况下，我只会得到我在脸上画的东西。在这里，mPreview 是 CameraSourcePreview .

刚刚添加了捕获按钮并在 this 中添加了上面的代码谷歌示例。

Answer 1

您非常接近实现您的需求:)

你有:

1. 来自面部相机的图像(第一个代码 fragment )
2. 来自眼睛覆盖 Canvas 的图像(第二个代码 fragment )

你需要什么:

• 面部和眼睛叠加在上面的图像 - 合并后的图像。

如何合并？

要合并 2 个图像，只需使用 Canvas ，如下所示:

public Bitmap mergeBitmaps(Bitmap face, Bitmap overlay) {
    // Create a new image with target size
    int width = face.getWidth();
    int height = face.getHeight();
    Bitmap newBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);

    Rect faceRect = new Rect(0,0,width,height);
    Rect overlayRect = new Rect(0,0,overlay.getWidth(),overlay.getHeight());

    // Draw face and then overlay (Make sure rects are as needed)
    Canvas canvas = new Canvas(newBitmap); 
    canvas.drawBitmap(face, faceRect, faceRect, null);
    canvas.drawBitmap(overlay, overlayRect, faceRect, null);
    return newBitmap
}

然后您可以像现在一样保存新图像。

完整代码如下:

mCameraSource.takePicture(shutterCallback, new 
CameraSource.PictureCallback() {
        @Override
        public void onPictureTaken(byte[] bytes) {
            // Generate the Face Bitmap
            BitmapFactory.Options options = new BitmapFactory.Options();
            Bitmap face = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, options);

            // Generate the Eyes Overlay Bitmap
            mPreview.setDrawingCacheEnabled(true);
            Bitmap overlay = mPreview.getDrawingCache();

            // Generate the final merged image
            Bitmap result = mergeBitmaps(face, overlay);

            // Save result image to file
            try {
                String mainpath = getExternalStorageDirectory() + separator + "TestXyz" + separator + "images" + separator;
                File basePath = new File(mainpath);
                if (!basePath.exists())
                    Log.d("CAPTURE_BASE_PATH", basePath.mkdirs() ? "Success": "Failed");
                String path = mainpath + "photo_" + getPhotoTime() + ".jpg";
                File captureFile = new File(path);
                captureFile.createNewFile();
                if (!captureFile.exists())
                    Log.d("CAPTURE_FILE_PATH", captureFile.createNewFile() ? "Success": "Failed");
                FileOutputStream stream = new FileOutputStream(captureFile);
                result.compress(Bitmap.CompressFormat.PNG, 100, stream);
                stream.flush();
                stream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    });

请注意，以上只是示例代码。您可能应该将合并和保存到文件的操作移至后台线程。