多焦点画像処理のための位置合わせ手法と撮像系の構築(<論文小特集>イメージセンシング技術)

概要

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We describe an registration method and a camera system for multi-focus image processing. We also describe a novel method for high-speed generation of arbitrarily focused images using graphic accelerator. The registration method uses global and local registration. The former corrects for differences in the displacement and scale between acquired images by using a hierarchical block-matching technique; the latter corrects for local deformation due to lens distortion. The developed camera can capture three differently focused images simultaneously for the same scene, so that we can generate an arbitrarily focused image for dynamic scene. Finally, we show example motion images with an arbitrary focus generated from two differently focused image sequences captured by the proposed camera.
社団法人映像情報メディア学会の論文
2000-02-15