http://www.gissky.net- GIS空间站

 针对气象卫星分时成像所获得的序列图像同时具有刚性及非刚性形变的特点,提出结合B样条的分级变换模型进行配准。该算法不但考虑到传感器位置变化引起的旋转和平移等整体刚性形变,而且还考虑云的扭曲所引起的局部非刚性形变。对于图像整体刚性形变采用仿射变换配准算法进行校正,使图像整体趋于一致;而云的局部扭曲等非刚性形变采用改进的基于B样条的自由形态变形模型(FFD)非刚性配准算法进行校正。试验结果表明,本算法能够达到亚像素级的配准精度,并且具有较快的运行速度。 更多还原

【Abstract】 Serial images obtained by meteorological satellite have both rigid and nonrigid deformations.Due to this characteristic,a hierarchical transformation model of the motion based on B-spline is introduced.The global rigid deformation of the image is mainly caused by the position changes of the sensor,and it includes rotation and shift.Cloud’s distortion results in the local nonrigid deformation.The global motion of the image is modeled by an affine transformation which carries out the rigid registr... 更多还原