1、首先,在ps中打开需要的证件照。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6a600c338744ebf863ce95c9d7f9d72a6159a78d?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、选中需要换背景色的照片,然后点击【图像】→【调整】→【色相/饱和度】,也可以直接使用快捷键Ctrl+U。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/8ad4b31c8701a18bc564e3b9902f07082938febd?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、打开后在【色相/饱和度】界面点击全图那个位置的下拉菜单。选择红色。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/38dbb6fd5266d016049d69de992bd40734fa35bb?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、颜色选择为红色后,调整【色相】栏的三角符号,向左移动,背景色就更换成了蓝色。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a8ec8a13632762d0ae155449aeec08fa513dc619?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、到了这一步,基本就完了,但是放大看会发现头发周围还有一些需要调整的地方。这时就用取色的笔选取背景色,之后用画笔来调整头发的边缘。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a08b87d6277f9e2f40b5eafe1130e924b999f340?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、选择画笔后,将画笔笔头选为软笔头,然后将透明度调整到40%左右,直接调整头发边缘就大功告成了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/32fa828ba61ea8d31f7283f2990a304e241f58f0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)