Nuke电影级别实拍绿幕抠像视频教程 FXPHD – NUK235 The Art and Science of Green Screen Keying, Part 1

在Nuke下完成实拍视频绿幕抠像的基本流程步骤，像素和透明通道的处理，元素的合成等

Pulling a key from a greenscreen is one of the basic skills for any compositor but only the most skilled artists can create the illusion of the integration of an extracted green screen element with other CG layers to make it look like it was shot at the same time, with the same camera and lenses under the same lights. For a compositor there is more to see than just green pixels and an alpha channel. The elaboration of a green screen or blue screen requires both fine artistic eye and a methodological mindset.