An unsharp mask basically redefines the edges of images by adding a mask.

一个锐化掩模基本上重新定义图像的边缘增加了口罩.

Most unsharp mask tools allow you to set the pixel width of the mask and the amount of sharpening.

最锐化遮罩工具允许您设定的像素宽度的面具和数额的锐化。