imagemagick大笔画宽度增加了像油漆流体的奇怪效果

Question

我遇到了一个名为pixenate的脚本问题，该脚本使用javascript，imagemagick和perl作为简单的图像编辑器。深度排除故障后，我发现当我在有一些交叉点的​​图像上绘制一些东西时使用大笔画宽度（14+）时会出现问题，否则一切正常。问题看起来像油漆液！如下：

我尝试打开和关闭antialias，插入选项和方法属性到perl magick documentation中的所有可能值。

发送的数据如下

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版本：ImageMagick 6.7.7-10 2014-03-06 Q16