function ret = subtractBackgroundOffset(img, fraction) % Remove the background from the image. % :param dataArray: The image % :type dataArray: xarray DataArray % :param x_fraction: The fraction of the pixels used in x axis % :type x_fraction: float % :param y_fraction: The fraction of the pixels used in y axis % :type y_fraction: float % :return: The image after removing background % :rtype: xarray DataArray x_fraction = fraction(1); y_fraction = fraction(2); offset = Helper.getBkgOffsetFromCorners(img, x_fraction, y_fraction); ret = img - offset; end