PS快速抠出很多细毛发的美女人像并更换背景教程
<p><span style="color: #ff0000"><strong>最终效果：</strong></span></p><p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153632163.jpg" /></p>
<p><span style="color: #ff0000"><strong>原图：</strong></span></p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153633164.jpg" /></p>
<p><span style="color: #ff0000"><strong>主要过程：</strong></span></p>
<p>1、观察通道。打开原图素材，进入通道面板，红通道发丝与背景色差较大，不过细发丝几乎与背景融合，抠图容易损失细节。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153633165.jpg" /></p>
<p>2、把背景图层复制一层，如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153633166.jpg" /></p>
<p>3、在背景图层上面新建一个图层，用油漆桶工具填充红褐色#76583e，如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153634167.jpg" /></p>
<p>4、点击背景色调出拾色器，然后用吸管吸取细发丝边缘的背景色，如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153634168.jpg" /></p>
<p>5、在工具箱选择“背景橡皮擦工具”，在属性栏设置参数，如下图，容差设置为35%，如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153634169.jpg" /></p>
<p>6、选择背景副本图层，用背景橡皮擦工具先从左侧头发部分涂抹，消除原有背景。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153634170.jpg" /></p>
<p>7、这是大致涂好后的效果。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153635171.jpg" /></p>
<p>8、新建一个图层，按Ctrl + Alt + Shift + E 盖印图层。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153635172.jpg" /></p>
<p>9、进入通道面板，观察一下红通道，现在发丝与背景色差明显增加不少。左侧为处理之前效果，右图为现在的效果。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153635173.jpg" /></p>
<p>10、把红通道复制一层，得到红副本通道，如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153635174.jpg" /></p>
<p>11、选择菜单：图像 > 应用图像，参数及效果如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153636175.jpg" /></p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153636176.jpg" /></p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153636177.jpg" /></p>
<p>12、按Ctrl + A 把红副本通道全选，按Ctrl + C 复制。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153637178.jpg" /></p>
<p>13、点RGB通道返回图层面板，按Ctrl + V 把复制的通道粘贴进来，如下图。</p>
<p align="center"><img alt="" src="https://img.jbzj.com/file_images/photoshop/201706/20170628153637179.jpg" /></p>
<p>
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