One Cost-Effective High-Resolution Multispectral Imaging System for Quick-Response to Time-Critical Applications

摘要

Low-cost high-solution multispectral imagery is attractive to various users. This paper presents our ongoing research on developing Unmanned Airship on Board High-resolution multispectral Imaging System for quick-response to time-critical applications. First, the core component of Multispectral Imaging system is described. After that, automatic registration of collected multispectral imageries is discussed. Based on Least Square technique and classic homography principle, multi-homography model is developed to undo the motions deduced in multispectral imageries. To obtain reliable control points for the estimation of motion parameters, one FFT-induced Multispectral Imagery Matching approach is proposed as well. Next, flight experiments are implemented to collect multispectral imageries with different spatial resolution as well as imageries are registered with developed technique. Finally, conclusions and future work are conducted. Imagery usage in investigating, estimating and monitoring Miyun reservoir environment is also mentioned.