1、首先我们需要下载一个ps软件安装在电脑上,安装完成是这样的。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/5ab5c9ea15ce36d3246ced5737f33a87e950b169?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2、然后打开需要换成白底的照片,在右上角的菜单栏里面找到调整然后选择调整里面的替换颜色工具,打开它。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/8718367adab44aed89e9d083be1c8701a18bfb36?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3、点中下图那个结果的色块,里面有很多种颜色选择,我们选择一个白色色彩。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/e7cd7b899e510fb372191ef0d433c895d1430c50?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4、然后必须将色块旁边的明度调整到100,这样才会出现纯白的底。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b03533fa828ba61ee007a1484c34970a314e59ef?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5、由于照片一开始是蓝色的背景,所以在替换完色彩以后,可能会发现边缘还有一些蓝色,这时可以在菜单里面---调整---色相饱和度,然后选中蓝色将它的饱和度降低位-100,这样照片就会没有蓝色的痕迹了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/dbb44aed2e738bd414cfda56ac8b87d6267ff9ef?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6、最后确定保存一下,照片底色就换过来了。
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/500fd9f9d72a6059c0fd8a7d2534349b023bbaec?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)