背景／前景 Background/Foreground
背景-前景分离模型 background-foreground separation model
以及前景-背景对比度 foreground-background contrast
前景-背景维度假设 the Assume of Foregrounding-background Dimension
例如，电影制作人可能会选择在背景中加入救护车的警笛声，而在前景的声音和图像中表现一对争吵的夫妇。
For example, a film-maker might opt to include the background sound of an ambulance's siren while the foreground sound and image portrays an arguing couple.
第三方产品提供附加的功能，如放大全系统字体的“主题”，或者提供背景和前景之间高对比度的主题。
Third-party products can provide additional functionality, such as a "theme" that enlarges fonts system-wide or one that provides high contrast between background and foreground.
基本上讲，就是用你的相机和镜头去控制照片中背景和前景关系的能力。
Basically, it is the ability to use your camera and lenses to control the relationship between the background and foreground of your pictures.
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