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Phosothop
1.
Photoshop 图片处理基础
2.
Photoshop图片处理基础 •
Photoshop基本工具介绍 • 常见图片格式及其使用 • 图片的简单调整 • 图片的剪切 • 图片的缩小 • 图片的输出 • 如何做Screenshot • 图层的简单运用
3.
Photoshop界面
4.
常见图片格式及其使用 • JPG: 用于颜色较多的图片,如照片(人像,
风景) • GIF:颜色较少的图片,支持动画,如 Screenshot,GIF动画 • PNG:带有透明效果的图片,用于网页制作 • BMP:位图,我们一般不用。
5.
图片的简单调整 • 调整曲线:可使照片变量变暗,增加减少
对比度等。 • 调整色相饱和度。可修正照片颜色。
6.
图片剪切
7.
图片的缩小 • 为什么要缩小图片? 图片太大会浪费资源,浪费时间,适合的 图片可增加工作效率,减少服务器资源消 耗,减少网络带宽消耗,可使网页显示速 度更快。
8.
图片的输出 • 选择合适的格式:JPG?GIF?PNG? • 选择合适的参数 •
选择合适的文件大小
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