Most film makers still use a relatively simple process called matte layering, which involves using a blue or green screen to create images that can be layered to create a composite image.

很多电影制作人仍然使用被称作杂边压条的相对简单的流程，包括使用一个蓝色或绿色的屏幕来创作图像，这种图像可以被分层从而创作出一个合成图像。

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Most film makers still use a relatively simple process called matte layering, which involves using a blue or green screen to create images that can be layered to create a composite image.

很多电影制作者仍采用相对简单的程序—分层，即使用蓝色或绿色底色来分层并合成影像。

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Most film makers still use a relatively simple process called matte layering, which involves using a blue or green screen to create images that can be layered to create a composite image.

大多数的电影拍摄者仍然运用一种相对简单的方法被称之为不光滑压条法。它包含运用一种蓝色或者绿色的屏幕来创造合成的影像。

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He also noted in a patent filing that the process allowed the blue-screen procedure to cope with glassware, cigarette smoke, blowing hair and motion blur which had all caused problems for earlier efforts.

BBC: Blue and green-screen effects pioneer Petro Vlahos dies