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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=1738844622-ETGr3p8IykIaQeikDPEKbyoxynz6peHR-0-f4f4441cd359c6b9911d9509abe70f82)
图4-158
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-03.jpg?sign=1738844622-31eqQfwOwUUyfYGnhihrooLx7I6r7hyx-0-68740a8f6daf77b628883a2086e89da0)
图4-159
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-04.jpg?sign=1738844622-tDlAdBTbvnnWaBc773P2tfySTlw3PSaE-0-fae2b9e875f6e985d239c13625e4d660)
图4-160
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-05.jpg?sign=1738844622-ND5jyNUAXS0UJGUMGE8My71qgRKvUpDR-0-b9db8b335b209e3007ee68771c669b9a)
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=1738844622-PnP5Kp3Uctlqw07oSxA7Idie7LK12MLM-0-93bf53fbb36f38aa7353015ff2e6a726)
图4-162
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-07.jpg?sign=1738844622-t9uMHpMUR5c3MzHCD31pBRu5LruzcdvU-0-ce411b7fcf2020a9a2fcbcc76dc3ebb6)
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=1738844622-iEmZoGJXuhSESde3H3iL3AB5tMGbKAM8-0-1fa85572a8134f3077d584c5f92892ce)
图4-164
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-10.jpg?sign=1738844622-HKXRW7PRld5hKgFUV9AkBGHOhDkDv7lP-0-1ca39ecb16cf6960526d2f0de16b5d02)
图4-165
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-11.jpg?sign=1738844622-zHDGQZ384eUmv6oL2wUD3xtF69ZsZCfD-0-6a218b03f95f9a6ad88173293018dc1d)
图4-166
![](https://epubservercos.yuewen.com/072C65/13311759205198706/epubprivate/OEBPS/Images/102-12.jpg?sign=1738844622-WEyOeY9PsAqBMWSWKikRNRkiK9fObRbp-0-9e16f7aa06969b193858ba1e68674127)
图4-167