Abstract
A prelocation image stitching method is proposed for the scan imaging system using Risley prisms. By confining the feature-based stitching procedure to several prelocated overlap areas in multiple subregion images, the proposed method reduces the computational complexity of feature extraction and image registration. Experiment results and analysis have validated the feasibility and robustness of the overlap prelocation algorithm, which can enhance the image stitching efficiency by 21.89% at least and by 39.38% at most. In addition, the composite image obtained from the prelocation stitching procedure can achieve a large field of view while maintaining high resolution.
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