環境変化に対応する動的映像補正手法

概要

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Projectors have recently been widely used not only in theaters but also in accessible environments such as living rooms with non-flat or non-white walls. In these environments, image projection can be quite difficult due to the geometrical and photometrical distortions. We have developed an adaptive image projection method to overcome such dynamic environmental challenges. In order to achieve highly accurate and interactive compensation, we approximate a projector's response function on the basis of changes to the target reflectance property and environmental light, including the effect of indirect reflected light. We also use a depth sensor to measure geometrical changes in real-time to correct geometrical distortions. We implemented the proposed method with a ProCams system and a GPU and discuss the results for actual environmental changes in an ordinary room.