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4.9 课后练习
打开学习资源中的素材。执行“选择>色彩范围”命令,打开“色彩范围”对话框。在文档窗口中的人物背景上单击,进行颜色取样,如图4-158和图4-159所示。单击添加到取样按钮,在右上角的背景区域内单击并向下移动鼠标,如图4-160所示,将该区域的背景全部添加到选区中,如图4-161所示。从“色彩范围”对话框的预览区域中可以看到,该处全部变成了白色。
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-02.jpg?sign=1738967484-lGzuSTSpGW90IUb826oUiPsXZRhop1QZ-0-c0cb06394155fee540453b3496f083cc)
图4-158
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-03.jpg?sign=1738967484-GaaMRMEjTLMEGWNcg9zc7lM01R3iLNre-0-cdabc95cf875112edb0ba083c5740eda)
图4-159
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-04.jpg?sign=1738967484-Z5lk9F60rbB385jb5EJqpxTLGDZdMD8g-0-4bdddedc639e69c53116f6db2b1a7916)
图4-160
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-05.jpg?sign=1738967484-bZD4hZSwxO9Df3eiw4hEbD76yXU4ZTrr-0-925af41716f41a5836f72448a28db52a)
图4-161
向左侧拖动“颜色容差”滑块,这样可以让羽毛翅膀的边缘保留一些半透明的像素,如图4-162所示。单击“确定”按钮关闭对话框,选中背景,如图4-163所示。
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-06.jpg?sign=1738967484-O7rOXijTAw012aLfAXyv6Y5cFpTHNCCH-0-cfd289e010cb0ce35712bc2f29bdcc2b)
图4-162
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-07.jpg?sign=1738967484-AXZoe5SYRVqoC39fSZJhPABmLklWIZYv-0-cb83e7334c098313f94fbe7a5925d712)
图4-163
执行“选择>反向”命令即可选择小女孩。打开一个文件,如图4-164所示。使用移动工具将小女孩拖入该文档中,如图4-165所示。执行“图层>图层样式>内发光”命令,打开“图层样式”对话框,为小女孩添加内发光效果,让发光颜色盖住图像边界的蓝色,如图4-166和图4-167所示。
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-09.jpg?sign=1738967484-N8vSaBVUdD335aSafu9QmbROL2AvdfVn-0-2795c0248985b7ceb8f8f7dcbcd2471f)
图4-164
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-10.jpg?sign=1738967484-oMbXiOvcb3NLExqtoyZlBkTdvhpsJgFI-0-10dd5754351d510c12a525614cb19ecc)
图4-165
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-11.jpg?sign=1738967484-K8jEuzd50cFIN8rPHaL4OVp2SNXWp7dI-0-8d3920dc46c61c39dbfaa417b6a04219)
图4-166
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-12.jpg?sign=1738967484-NWZczHVqJgVy3NzccUI9hc3jtrTD7a6M-0-fa5ec063f42cbe41d3ea5c2af5bbbe51)
图4-167