大面阵CCD影像多通道不一致性消除算法

大面阵CCD多通道影像转移过程中,由于通道硬件的偏置和增益的不一致,将造成各通道影像的亮度和反差的微小差异,以致重建后的大面阵CCD影像出现条带效应。提出基于随机序列分析的模拟运动影像拼接算法,并将这种方法与基于影像直方图均衡化和影像直方图规定化的影像拼接算法进行比较。实验证明,基于随机序列分析的模拟运动影像拼接算法不仅能保持拼接后的影像整体一致性,而且能较好的消除拼接缝。该算法已经应用于我国第一台大面阵彩色CCD数字航测相机的影像预处理。

The Eliminate Inconsistent Algorithm of Large Plane Array CCD Multiple Channel Images

In the process of divert large plane array CCD multiple channel images,because the biasing and gain of hardware channel is inconsistent,it will lead to minute difference of the lighteness and contrast of each image channel,and large plane array CCD image that is reconstructed appear banding effect.The paper puts forward the simulative moving blurred image splice algorithm based on the analysis of random sequence.By comparing with the traditional image splice algorithm based on image histogram equalization and histogram specification,the paper summarized the validity of simulative moving blurred image splice algorithm based on the analysis of random sequence,and it can solve the holistic consistency of scabbed image,also can eliminate scabbed gap well.The algorithm has application in the image information preprocessing of the first large plane array CCD colorized digital aerial photogrammetry camera system in our country.