不同遥感影像融合方法的比较研究

Comparison on Methods of Remote Sensing Image Fusion

以许昌市某地区的TM遥感影像为实验数据,分别进行基于主成分变换,乘积变换,比值变换,HIS变换,小波变换的影像融合.通过计算亮度信息、清晰度、光谱信息、信息量等定量评价参数,对融合效果进行定性和定量的评价.实验表明,不同的融合方法进行融合时会产生不同的效果,通过多角度的定量评价和目视定性评价相互验证能够确定评价指标的准确性.

According to experimental data on TM remote sensing image obtained in Xuchang, this paper an- alyzes the image fusion based on principal component transform, product transform, ratio transform, HIS trans- form and wavelet transform. Qualitative and quantitative evaluation on the fusion effect is made by cultivating brightness information, image definition, spectral information and information quantity. The experimental results show that different fusion methods can produce different effects and the accuracy of evaluation index can be tested through the combination of multi-angle quantitative evaluation and visual qualitative evaluation.