Firstly build a background image in the complex background with a moving object and obtain initial object contour from the current image by frame-difference.

首先利用自适应的背景提取算法从带有运动目标的复杂背景中构建背景图，并提取出运动目标轮廓。

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Based on adjacent frame difference, we proposed a improved algorithm. An experiment result was given to show this method is efficient.

在介绍相邻帧差分算法的基本原理的基础上，提出了一个改进的相邻帧差分算法，并给出了实验结果。

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Background subtraction and frame difference method are commonly used moving objects detection methods.

背景差法和帧间差法都是常用的运动目标检测方法。

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O'Sullivan made 77 for 7-5, and Hendry's 72 restored the one-frame difference before a tight 14th which eventually fell to O'Sullivan.

BBC: O'Sullivan triumphs in Torquay

The importance of frames (there are several newly framed works here) is especially evident when we see the difference between two monumental Rembrandts the elegant and restrained wooden frame that surrounds the so-called Noble Slav (1632) makes the gilded 19th-century frame on "Aristotle With the Bust of Homer" (1653) seem needlessly gaudy.

WSJ: The Met's European Reunion