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我正在尝试将现有图像更改为具有透明背景。根据文档,我应该是 RGBA 图像,我应该使用橡皮擦工具在透明背景中绘制。这行得通,但是橡皮擦工具是 5 像素宽,这意味着我可以擦除小区域。
如何将橡皮擦更改为 1 像素宽?
解决使用选择工具先屏蔽该区域。