基于均衡化曲线的条带消除研究

A Study on Striping Removal Based on the Equalization Curves

采用多元并扫方式获取遥感数据的成像光谱仪,由于各探测器的响应存在一定的差异,因而不可避免的产生条带,这对于多数的航天和航空传感器来说是一个普遍存在的现象。对于一定范围的单一均匀地表目标而言,其反射特性是基本一致的,因此如果各个探测器之间不存在响应差异,那么其输出值也应该是基本一致的。基于此思想,以MODIS数据为例,运用基于均衡化曲线的补偿方法来消除其条带,最后的结果证明该方法是有效的。

Striping noise is familiar in remote sensing image acquired by most imaging spectroradiometers which use multi-sensor to obtain data because each detector＇s response to radiant signal is different. The reflected characteristic is coincident approximately with a certain uniform target on ground, so their output values should be nearly the same if there is no responsive difference between each detector. We can remove the stripings on MODIS image using their equalization curves based on the above principle, the final results indicate this method is efficacious.