通过相隔固定的帧差值阅值化得到背景样本值，并采用高斯核密度估计方法计算背景灰度的概率密度函数。
The background samples are chosen by thresholding inter-frame differences, and the Gaussian kernel density estimation is used to estimate the probability density function of background intensity.
它将建立在本文的技术背景上，并且展示在这两个环境中开发、实现和发布Web服务的更详细的代码样本。
It will build on the technical background of this article, and show more detailed code samples for developing, implementing, and publishing Web services in both environments.
使用您的样本，以增添色彩，记住，你需要一些为背景，头发和脸。
Use your swatches to add colour, remembering that you need some for the background, hair and face.
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