运动目标检测是将位置发生改变的物体从背景中提取出来，它是运动目标跟踪、行为识别 和场景描述等技术的基础。运动目标检测的经典方法有光流法、帧间差分法和背景减除法。-Moving object detection is to change the position of the object extracted the background, it is a moving target tracking, behavior recognition And underlying techno

本文档包含了对四篇论文中Videotext的内容检测方法概述，其中有通过前景后景变化差异检测，边角特性检测等方法进行text的detection或者recognition-This document contains the contents of four papers in Videotext detection methods outlined, including the detection text carried out by the method of difference sce