大家在网上看到过很多快速给证件照换底色的方法,但是实际操作起来发现会遇到一些问题比如
![](https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2020%2F0216%2F9381f5e6j00q5s6s4001dd000s600fup.jpg&thumbnail=660x2147483647&quality=80&type=jpg)
这是将红色背景的证件照用魔棒工具快速替换成蓝色,会发现在人物的周围出现了一个红圈那这种情况该怎么办呢第一步,打开一张证件照(在网上搜了一张帅气的)
![](https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2020%2F0216%2F305a2b05j00q5s6vj0015d000s600fup.jpg&thumbnail=660x2147483647&quality=80&type=jpg)
第二步,用魔棒工具选择红色的背景,再按快捷键ctrl+shift+i反选,选出人物区域
![](https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2020%2F0216%2F67db440ej00q5s6zf0016d000s600fup.jpg&thumbnail=660x2147483647&quality=80&type=jpg)
第三步,打开菜单栏-选择-调整边缘,拉动平滑和调整边缘,知道红色线条消失为止,调整的时候要微调,否则人物会过于生硬
![](https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2020%2F0216%2Fe83b7e6cj00q5s74h001cd000s600fup.jpg&thumbnail=660x2147483647&quality=80&type=jpg)
第四步,再按快捷键ctrl+shift+i反选,选中背景区域。打开拾色器,选择想要替换的颜色
![](https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2020%2F0216%2F2a5f1f68j00q5s77s001gd000s600fup.jpg&thumbnail=660x2147483647&quality=80&type=jpg)
第五步,按快捷键alt+delete填充颜色,再按快捷键ctrl+d取消选择区域
![](https://nimg.ws.126.net/?url=http%3A%2F%2Fdingyue.ws.126.net%2F2020%2F0216%2F29533b66j00q5s79y0015d000s600fup.jpg&thumbnail=660x2147483647&quality=80&type=jpg)
一张完美的证件照就做好了
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