一种基于变化向量分析的变化检测方法

变化检测阈值对变化检测精确度的确定具有十分重要的影响,目前变化阈值的确定一般通过经验来完成,带有很大主观性.本文以变化向量分析方法为基础,将其运用到对图像的变化检测中,提出了一种以区域扩散的自适应确定阈值的方法来解决此类问题,在进行像素信息比较后的差值图像上设定一个阈值,并把该阈值应用到整幅图像上,从而使得变化检测精确度达到最高.同时运用相关资料进行精确分析和评价.结果表明,此方法提高了变化检测精确度.

A Change Detection Based on Change Vector Analysis

Change detection threshold is a very valuable approach for change detection precision,in which how to determine change magnitude threshold and change direction reasonably has already become an obstacle for its widely use.Therefore,a new method named a solution using proliferation of area to determine the threshold is proposed in this paper aimed at determining change magnitude threshold reasonably and efficiently.And we carry on the precise analysis and evaluation by the correlation material,the results showed that this method improved the change detection precision.