一种基于局部方差的图像低对比度区域判定方法

摘要

Based on the self-adaptive theory of the local variance and the characteristics of the low contrast region on im-age ,this paper presents an approach of self-adaptive to judge low contrast region on image .T he size of low contrast region is modulated by setting thresholds and proportions for local variance .Experimental results demonstrate that the proposed approach basically realizes the effective judgement on low contrast region on image ,which will offer convenience to the fol-lowing image processing .%根据图像低对比度区域的特点，基于局部方差的自适应理论提出了一种判定图像低对比度区域的方法。通过给局部方差设置一定的阈值和合适的比例，调节低对比度区域的大小。实验结果表明，该方法实现了对图像低对比度区域的有效判定，为图像处理带来了便利。