基于Mask原理的遥感影像恢复技术研究

从传统摄影复制技术中的Mask晒像原理出发,针对航空航天遥感影像上出现四周减光、照度与颜色不均匀、对比度下降、影像模糊等质量退化情况,提出将影响影像退化的各种因素综合考虑,通过一种基于Mask的影像复制技术来建立影像降质模型,并以此Mask影像对遥感影像进行恢复处理。试验结果表明,该恢复算法是可行的。

Image Restoration Based on Mask Technique

An image restoration algorithm based on the Mask technique is proposed to deal with the quality descend case of light decreasing around, asymmetry of intensity and hue, declination of contrast, image blur and noise etc. A Mask image is produced to simulate the image quality descend model with considering all the quality descend factors together. And a blocked Wallis transformation is applied to obtain the clear edge and best contrast to the Mask restoration image. The restoration experiments to three kinds of quality descending images show that the restoration technique based on the mask can remove the quality descending affection determined on the nature and position and realize image restoration without knowing the concrete quality descending function.