研究生数字图像的课程论文设计
基于分断线性变换的图像增强
( 华南师范大学物理与电信工程学院, 广东广州 510006 )
摘要:
本文提出了一种基于区域分割的分段线性变换方法,将整幅图像分为不同的灰度段,并进行了不同的灰度处理,结合灰度直方图提供的有关灰度分布的统计信息和图像提供的空间位置信息,利用各灰度区间把图像分割成不同的区域,检验要增强的目标是否落在某灰度区间对应的图像区域内,从而加快了调整灰度区间的过程,提高了算法的执行效率,实验结果表明,在改善图像视觉效果方面,分段线性灰度变换的效果更加明显。
关键词:
线性变换 灰度直方图 图像增强 ABSTRACT:
This paper proposes a piecewise linear transformation method based on region segmentation, gray level of the whole image is divided into different, and different grayscale processing, combined with the gray histogram of the gray level distribution of statistical information and image spatial location information, use each gray scale interval dividing the image into different areas, whether test to enhance target in a gray interval corresponding to the image area, so as to speed up the process of adjusting grayscale range, improve the execution efficiency of the algorithm, the experimental results show that in the aspect of improve image visual effect, piecewise linear gray level transformation effect is more obvious. KEYWORDS:
Linear Transformation Gray histogram Image enhancement
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