一种软件实现虚拟景深的方法

影视后期制作或图像合成中，动态实时改变显示画面的景深能进一步增强画面的真实感，但由于实时性要求较高，软件实现在处理速度方面容易产生瓶颈。为此，采用预处理的办法，分别对前景和背景进行低通滤波，得到前、背景各自的模拟帧序列，通过调节前景和背景帧序列的位置，模拟确定其各自的变焦程度，然后将前景和背景动态合成具有虚拟景深效果的画面。

A method for the realization of virtual depth of field

Dynamically changing depth of field in real-time while making videos afterward or synthesizing images can even more enhance third dimension,but this make process via software very difficult,even bottleneck,so we adopt a pre-processing method that processing the foreground and background with low-pass filtering respec-tively in advance,After having gotten the foreground and background frame queue,we can adjust the position in the foreground queue and background queue respectively too,Just to confirm what the foreground and background should be in the end,then we combine the foreground and background dynamically to make the virtual depth in field effect.[