Multi-spectral image inter-band registration technology research
Multi-spectral image refers to the use of multi-spectral sensors from the same object (target or region) to obtain the spectral range of more than one image. With the development of multi-spectral imaging technology, the existence of non-rigid mismatch among the original inter-band images requires a higher accuracy and faster registration. Here an automatic elastic registration method based on mutual information and thin-plate spline interpolation is presented, we carried out HJ-1A/B satellite Level 1 visible light inter-band images registration. This does not require other priori assumptions among multi-spectral image gray relationships, or the need for image segmentation and pre-processing (such as feature extraction, classification, etc.). Through the research about multi-spectral image inter-band registration, deviations may be controlled within an acceptable range, we can get more information about multi-spectral images.