摘要
在遥感图像研究中,图像增强技术对于改善图像的对比度、突出某些局部细节等方面都起着积极的作用。详细介绍了灰度变换、直方图规定化、中值滤波器、Butterworth低通滤波器等多种图像增强的方法、原理及在Matlab中的实现过程,并对各种方法的实现结果进行了比较。结果表明,上述图像增强方法,能够扩大地物之间的像元灰度差距,有助于图像中常绿林等典型地物的特征提取。
Research in remote sensing images,image enhancement technology for improved image contrast,highlight some of the local details,and so plays an active role.This paper detailed the grayscale transform,the provisions of the histogram,the median filter,Butterworth low-pass filter and so on many kinds of image enhancement of realization in Matlab,and on a variety of methods to achieve results.The result showed that the above method for image enhancement can expand the pixel grayscale difference of ground object,and help to typical feature extraction in Evergreen features etc.
出处
《地理空间信息》
2011年第1期57-59,12,共3页
Geospatial Information
基金
国家自然科学基金资助项目(40601003)
湖北省教育厅青年项目(Q200610002)
