Photoshop快速抠图：使用蒙版工具

Myth丶恋晨 2023-07-07 11:14 35阅读 0赞

## Photoshop系列 ##

Photoshop系列：记录一些关于Ps的常规使用方法

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首先按下F7，打开图层工具，点击通道，可以看到有红、绿、蓝三个通道

我们分别点击三个通道，然后找出哪个通道下，对象和背景的相差最大

原图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70][]

红色通道：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 1][]

绿色通道：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 2][]

蓝色通道：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 3][]

观察对比可知，红色通道下，对象与背景的区别最大

拖拽红色通道到右下角处（右下角右数第2个），从而新建一个完全相同的图层

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 4][]

选中新建的这个通道，按下command + L

调整色阶，让整个对象看上去与背景不一样

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 5][]

接下来选中该通道，按住command，点击此处的缩略图（红 拷贝字样左边的缩略图）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 6][]

这样就会框选出我们所选择的区域

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 7][]

回到图层栏目

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 8][]

（有些情况下可能会用到反选，反选的操作是：按住command + shift + i，进行区域的反选）

点击此处的“添加图层蒙版”（下方左数第2个）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 9][]

蒙版添加完成

为了看得更加清晰，我们可以增加有色层，点击新建图层，也就是下图中的右数第2个

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 10][]

点击左边工具栏中的选色按键

![20200222211519415.png][]

随便选一种颜色，例如选取这种淡蓝色作为前景色

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 11][]

然后按下shift + F5，填充前景色

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 12][]

接下来进行一些修整，点击选中蒙版，打开画笔工具B，首先选择画笔的颜色为黑色与白色，对蒙版进行涂画修整（显黑后白或先白后黑都可以，黑白互换按住按键x）

将图层2拖动到图层1的下面，如图所示

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 13][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzI0MTE4NTI3_size_16_color_FFFFFF_t_70 14][]

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[20200222211519415.png]: https://img-blog.csdnimg.cn/20200222211519415.png
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