基于长线列探测器的图像非均匀性研究与校正

Research and correction of non-uniformity image based on long linear array detectors

基于长线列图像探测器的成像系统,其图像的非均匀性往往制约着系统成像的质量。结合线列图像探测器的结构特点,分析了线列图像的非均匀性产生原因,并在此基础上分析了多点校正算法,并提出一种基于图像轮廓提取的图像平滑算法。通过对比处理前后的结果,采用图像轮廓提取的图像平滑算法,在保证图像细节的基础上,能够提高图像的均匀性。

The image non-uniformity often affects imaging quality of imaging system based on long linear array detectors. On the basis of analyzing the causes of image non-uniformity, the multi-point correction algorithm is discussed,and a new image smoothing algorithm based on contour extraction is proposed. Through comparing results before and after processing, the new image smoothing algorithm can improve the uniformity of the image on the basis of ensuring details of image.