カメラの方向変化を利用した悪天候時の視野明瞭化 : 首振りカメラを用いた画像中の視野妨害となる水滴の除去

概要

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We propose a method for removing view-disturbing waterdrops from images by processing images taken with a pan-tilt camera system. Images that are taken on rainy days are often hard to make out due to adherent waterdrops on the surface of the protecting lens. In our method, a first image of a distant view is taken and then a second image is taken from a different angle. The new image is transformed with the projective transformation and compared with the first one to identify the regions with waterdrops. We can distinguish which image portion has waterdrops by considering the distance between two potential waterdrop regions. Finally, the region with waterdrops can be eliminated by merging two images. Experimental results showed the effectiveness of this method.
社団法人映像情報メディア学会の論文
2003-10-01