摘要
遥感影像对比度调整是影像预处理中的关键部分。分析人的视觉特性发现:影像中不同区域特征变化被感知度有所差异。相对于高频区域及对角线方向,人眼更容易感觉到平缓部分的特征变化。以往的对比度增强算法并没有考虑这一视觉特性,提出了一种基于视觉特性的影像增强算法。实验表明,该算法在较好的保持影像细节特征的同时,改善了影像的对比度,得到了较好的视觉效果。
Contrast enhancement for images is a key part in the pre-process of image. It is proved that appreciative sensing is different in different areas of the images according to analyze the HVP. The human eyes are more sensitive to the smoothing parts than the high frequency areas and the diagonal direction. The conventional contrast enhancement methods ignores this. In this paper, an improved contrast enhancement method based on HVP for remote sensing images is presented to get a better vision effect and well contrast enhancement. The experiments prove that the algorithm is efficient.
出处
《海洋测绘》
2009年第2期45-48,共4页
Hydrographic Surveying and Charting
关键词
遥感影像
对比度增强
小波变换
人类视觉特性
remote sensing image
contrast enhancement
wavelet transform
human visual property （HVP）
