Cannot get the original colored bitmap after tesse

问题:

I use tesseract library for android to capture certain text from an image. I know that the captured image is not saved anywhere, it gets recycled. I need to find the original colored bitmap. I have been trying to locate the original colored bitmap, but all I could find was a grayscaled bitmap:

Bitmap bitmap = activity.getCameraManager().buildLuminanceSource(data, width, height).renderCroppedGreyscaleBitmap();

When I save this bitmap to the sdcard, I get a gray scaled image. renderCroppedGreyscaleBitmap() method is as follows:

public Bitmap renderCroppedGreyscaleBitmap() {
    int width = getWidth();
    int height = getHeight();
    int[] pixels = new int[width * height];
    byte[] yuv = yuvData;
    int inputOffset = top * dataWidth + left;

    for (int y = 0; y < height; y++) {
      int outputOffset = y * width;
      for (int x = 0; x < width; x++) {
        int grey = yuv[inputOffset + x] & 0xff;
        pixels[outputOffset + x] = 0xFF000000 | (grey * 0x00010101);
      }
      inputOffset += dataWidth;
    }

    Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
    return bitmap;
  }

I would greatly appreciate if someone can tell me to get the original colored image captured. Do I have to change this method to get the colored image(RGB)?