邻域相关自适应对比度均衡遥感图像增强方法

Remote sensing image enhancement based on contextual adaptive contrast equalization

提出了一种改进的自适应对比度均衡遥感图像增强方法,首先将图像划分为互不重叠的子块,在计算当前对比度均衡图像子块局部统计参数系数时,引入了一个覆盖该图像子块邻域图像子块的矩形滑动模板,利用模板内图像的局部统计参数计算对比度均衡变换系数。在增强对比度的过程中引入了平滑因子,在增强图像的同时抑制了图像中噪声。遥感图像增强实验结果验证了改进方法的有效性。

An improved method of remote sensing image enhancement based on adaptive contrast equaliza- tion is presented. At first, a remote sensing image is divided into non-overlapped sub-blocks. When the contrast is adjusted by local statistics including the means and variance, a sliding template is used to calculate the contrast equalization coefficien enhancement du demonstrate the e to introducin effectiveness of g a smoothin the proposed t. The image noise can also be reduced during the image g factor in the equalization equation. Experimental results remote image enhancement method.