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AE绿幕抠像合成培训教程Lynda – After Effects Compositing Essentials: Color Keying

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Lynda – After Effects Compositing Essentials Color Keying

AE绿幕抠像合成培训教程Lynda – After Effects Compositing Essentials: Color Keying

中级 | 2h 13m | 2.17 GB | 含工程文件| 使用软件: After Effects CC 2014.1

颜色键控,也称为色度键控,让你拍摄前景场景并将它插入任何背景,这可以节省你的金钱和允许您创建照片不可能或非常危险的一枪。因为它是有效的,关键是细节。在本课程中,马克克里斯琴森展示了如何产生feature-film-quality键后效果,适合在他们的新场景,同时保留的微妙细节他们几缕头发或软或半透明的边框,使结果可信。

开始键控过程的简要说明,马克带你通过创建一个完美的绿屏键:所涉及的步骤生成一个粗糙无光,消除泄漏和不光滑的线,颜色和精炼有问题的边缘。他展示了如何与主光和Primatte-two不可或缺的键控工具后效果和何时使用一种解释道。绿屏不工作的时候,他展示了如何生成高对比度锍,或亮度键,根据画面亮度数据。最后,了解压缩和如何准备拍摄键控。

Color keying, also known as chroma keying, lets you shoot a foreground scene and insert it into virtually any background; this can save you money and allow you to create shots that are impossible or highly dangerous to take as a single shot. For it to be effective, the key is in the details. In this course, Mark Christiansen shows how to produce feature-film-quality keys in After Effects that fit well within their new scenes, while retaining the subtle details—be they strands of hair or soft or translucent edges—that make the results believable.
Beginning with a brief explanation of the keying process, Mark takes you through the steps involved in creating a perfect green-screen key: generating a rough matte, eliminating color spill and matte lines, and refining problematic edges. He shows how to work with Keylight and Primatte—two indispensable keying tools in After Effects—and explains when to use one over the other. And for times when green screen won’t work, he shows how to generate high-contrast mattes, or luma keys, based on the luminance data in your footage. Last, learn about compression and how to prep a shot for keying.

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