Reducing Motion Blur Artifact of Foveal Projection for Dynamic Focus-Plus-Context Display
This paper presents a novel technique to reduce the motion blur artifacts of foveal projection in a dynamic focus-plus-context (DF+C) display. The DF+C display is generally configured with multiple projectors and provides a non-uniform spatial resolution that consists of high-resolution regions (foveal projection) and low-resolution regions (peripheral projection). A serious problem of the DF+C display is motion blur, which inevitably occurs when a foveal projection is moved by a pan-tilt mirror or gantry. We propose a solution that reduces the motion blur artifacts, and evaluate how this solution improves the image quality by using both qualitative and quantitative experiments. Our proposed method defines an error function to assess the displayed image quality as the difference between an original high-resolution image and the displayed image by taking the non-uniform spatial property of human visual acuity into account. Then, it decides the set of positions and moving techniques of foveal projections so that the sum of errors during a video sequence is minimized. Through experiments, we confirmed that the proposed method can provide a better image quality and significantly improve the motion blur artifacts when compared to a conventional DF+C display.