code: public short[] getPixelValues(BufferedImage image) {
  		validateImageType(image);
  		WritableRaster raster = image.getRaster();
  		short[] pixelValues = getPixelValues(raster);
  		return pixelValues;
  	}
docs: Get the pixel values of the buffered image as "unsigned shorts"
  
  @param image
  tile image
  @return "unsigned short" pixel values