     watermark_rows: 0,
                watermark_cols: 0,
                watermark_x_space: Number(param.watermarkXSpace),
                watermark_y_space: Number(param.watermarkYSpace),
                watermark_font: param.watermarkFont,
                watermark_fontsize: param.watermarkFontsize,
                watermark_color: param.watermarkColor,
                watermark_alpha: param.watermarkAlpha,
                watermark_width: Number(param.watermarkWidth),
                watermark_height: 