您的操作有误。但PS替换证件照背景很见到,按照以下步骤即可解决。
第一步:打开白底证件照,双击右侧的“背景”来新建图层。确定后,小锁的标志会消失。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/730e0cf3d7ca7bcbdb119195b0096b63f624a826?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第二步:选择左侧的“魔棒”工具,在图片的白色区域点一下。图片边缘出现虚线即代表创建好了选区。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a2cc7cd98d1001e932e243b5b60e7bec55e797a9?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第三步:按下键盘上的“delete”按键,删除白色背景。此时背景为灰白格,即代表删除成功。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/2f738bd4b31c870103e2e45c297f9e2f0708ff30?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第四步:点击右上角的前景色方块,弹出前景色拾色器。在右下角输入“ff0000”,颜色会变为红色,点击右上方“确定”即可。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/838ba61ea8d3fd1f03b3f4803e4e251f94ca5fd5?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第五步:点击左侧颜料桶标志,在点击画布中空白位置,背景就成功被替换为红色。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9d82d158ccbf6c81b82b7d52b23eb13533fa406f?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)