1
在网上随便找一张图片,并用ps cs4软件打开它。
![](https://iknow-pic.cdn.bcebos.com/d4628535e5dde711dea64135a3efce1b9c1661f8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2
用“套索工具”“魔棒工具”或者等工具将心形图案选出来,创建出一个心形选区。
![](https://iknow-pic.cdn.bcebos.com/a8014c086e061d95ec8634fb7ff40ad163d9ca35?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3
点击ps菜单栏中的“选择”,在下拉菜单中选择“修改”,“扩展”
![](https://iknow-pic.cdn.bcebos.com/8cb1cb1349540923bb6461bd9658d109b2de49e7?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
4
这时,会弹出一个“扩展选区”对话框,在里面设置要扩展几个像素,这里填上10个像素。点击确定
![](https://iknow-pic.cdn.bcebos.com/b21bb051f8198618e746ed474eed2e738ad4e6f4?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5
回到图片上,看到选区按照我们的要求扩展了10个像素。
![](https://iknow-pic.cdn.bcebos.com/f2deb48f8c5494eea9d80dda29f5e0fe98257e7e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
6
如果要收缩选区,点击ps菜单栏中的“选择”,在下拉菜单中选择“修改”,“收缩”。
![](https://iknow-pic.cdn.bcebos.com/7af40ad162d9f2d3bcb0262cadec8a136227cc54?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
7
这时,会弹出一个“收缩选区”对话框,在里面设置要收缩几个像素,这里填上20个像素。然后点击“确定”
![](https://iknow-pic.cdn.bcebos.com/9a504fc2d5628535a92ad0e294ef76c6a6ef632e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
8
回到图片上,看到选区按照我们的要求收缩了。
![](https://iknow-pic.cdn.bcebos.com/6a63f6246b600c338a3cd30b1e4c510fd8f9a1af?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)