簡易型空中映像撮影システムによる広域状況モニタリングに関する研究

概要

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Many researches have been done as for visual inspection, however, the fundamental viewpoint problem exists that a camera position is low and fixed. As a result, the field of view is greatly restricted by several objects in the environment to be monitored. We have been doing research on the motion analysis to handle aerial images for the purpose of wide area monitoring using the proposed Simplified Aerial Image Acquisition System which consists of four vinyl balloons and a small wireless camera. At first, lens distortion is corrected. Next, SURF feature points are detected and tracked in continuous image sequence. Then, these local features are classified into "rigid static object in environment" and "new appeared moving object" by analyzing locus of each feature points. Finally, the movement of the viewpoint is estimated by calculating the Affine transformation matrix. Experimental results in both indoor and outdoor environments have shown the effectiveness of the proposed method.