中文摘要：

介绍TLD（Tracking-Learning-Detection）的框架和原理,将TLD跟踪算法分解为跟踪、检测和学习三个部分,分析TLD目标跟踪算法,总结国内外TLD研究的进展和应用方向,具体分析TLD的不足和优越性,并简单预测和分析未来TLD目标跟踪算法研究的可能方向和应用前景.

英文摘要：

The framework and principle of the object tracking has been introduced in this paper,which is based on TLD（Tracking-Learning-Detection）.The TLD algorithm has been decomposed into three parts：tracking,learning and detection.The detail analyzing of the three parts have been presented.What’s more,the shortage and advantage,the domestic and foreign researches and applications have been summarized.Finally,it has analyzed and forecasted the possible research of TLD and applications related to TLD.