Mosaicing of multi- resolution satellite images

Each scene of a remote sensing image, obtained from one orbit, is performed on a subset of the total area. The mosaicing process is employed to obtain the whole area. Then, several contiguous images obtained from many orbits of the same satellite are merged together. However, sometimes the contiguous images from the same satellite cannot be provided, Therefore, another satellite image with different resolution must be used for mosaicing. To perform the multi-resolution satellite mosaicing, first these images are geometrically registered to another by using the common ground control points in the areas of overlap. The biharmonic spline interpolation is applied for resampling the images in order to obtain the same resolution of picture element. The next step is to adjust the brightness of each image by gray scale matching procedure. In the final step, the seams appearing over the joint area between the adjacent images will be removed by using linear weighting function.