机载成像光谱仪图像边缘辐射校正的研究

通过对国产高光谱仪OMIS－I系统的数据进行分析，发现由于地物的二向反射分布等因素的影响图像边缘部分与中心部分的相同地物光谱曲线发生了变化，表现在彩色合成图像上相同地物呈现不同色调，经过对数据深入分析研究后，提出了一种空间参数拟合的直方图匹配方法，并用VC＋＋语言编程实现，取得了很好的效果。

STUDIES ON CALIBRATION OF EDGE RADIATION FOR IMAGES OF AIRBORNE HYPERSPECTRAL IMAGING SPECTROMETER

By analyzing the data of state produced hyperspectral resolution imagining spectrometer OMIS I system, it was found that the same field spectral curves of the edge and center parts of the images were changed showed because of the effects of bi directional reflectance distribution and the bigger scanners (Field of View FOV). The same field features showed different color on color synthesis images. By analyzing a lot of data, a histogram match method was developed for fitting spatial parameter. All of the procedures were carried out in the VC++program. The research result shows that the brightness of the images calibrated by this method have been enhanced greatly.