In HMD-based immersive AR, interacting with virtual objects often requires indirect pointing methods such as ray casting. We present SView'n'MTouch, which brings parallax-free direct touching of remote objects, analogous to that of smartphone-based mobile AR, to HMD-based immersive AR, using a physical plane prop that is conceptually transparent. The stereoscopic viewing mode lets the user inspect the AR scene in full stereoscopic depth, while the monoscopic touching mode lets the user touch on anything that appears through the plane prop, with haptic feedback and without binocular parallax. Our animated flattening algorithm ensures smooth mode transitions. We show that a lightweight transparent plane prop can complement HMD-based immersive AR in the future.
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