通过ImageMagick添加文本后字体附近的噪音

我把文字放在图像上，有一些杂音。我怎么能修好它？ 图像magick选项：

[
                currentImage,
                "-font", "Micra-Bold",
                "-pointsize", "40",
                "-strokewidth", "1",
                "-stroke", "black",
                "-fill", "white",
                "-gravity", "North",
                "-annotate", "+0+10", req.body.memData.actNumber,
                "-gravity", "South",
                "-pointsize", "26",
                "-annotate", "+0+10", req.body.memData.actText,
                ""+memsPath+tempName+".jpg"
            ];

---

而我的图像

噪声可能是JPEG伪影。尝试使用更高的质量（根据“标识-详细”，您的图像质量为70）。所以，试试看

比如说

"-quality", "92",