The surface is divided into rays, matte film.

表面分为光片、磨砂片。

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Paint film, matte film, optical mask, and other products.

彩绘膜、哑光膜、光面膜等多系列产品。

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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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This is used to generate a matte - which is transparent wherever the blue-colour features on the original film, and opaque elsewhere.

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