sh 将给定文件夹内的所有图像从彩色转换为灰度，调整它的黑白抖动级别并将其追踪到SVG矢量f

Posted 2021-05-07

#!/bin/bash

for f in *.jpg; do convert $f -colorspace gray -channel Gray -level 10,80% -brightness-contrast 10x90% -channel All -threshold 20 bmp:- | potrace -s - -o $f.svg ; done