任意输入图像，系统首先通过查询颜色表的方法快速提取出人脸区域。

Querying the color table, the system firstly selects out the face area from the image.

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一个媒介查询由一个可选的媒介类型和零个或多个通过使用媒介特征，比如宽度，高度，颜色，来限制样式表范围的表达式组成。

A media query consists of an optional media type and zero or more expressions that limit the style sheets' scope by using media features, such as width, height, and color.

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